Способ определения траектории маневрирующего воздушно-космического объекта

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Однопозиционный мультипликативный разностно-относительный способ определения координат местоположения источников радиоизлучения

Изобретение относится к системам радиоконтроля для определения координат местоположения источников радиоизлучения (КМПИРИ) УКВ-СВЧ диапазонов, как цифровых, так и аналоговых видов связи, сведения о которых отсутствуют в базе данных (например, государственной радиочастотной службы). Технический результат - определение КМПИРИ одним постом радиоконтроля (РКП) и n, равно или более двух, виртуальных постов (ВП). В основе способа лежит энергетический принцип, заключающийся в измерении (или вычислении) напряженности поля ИРИ и в нескольких точках пространства с известными координатами их местоположения. При этом напряженность поля ИРИ на РКП измеряют, а в дополнительной точке (точках) вычисляют. В качестве дополнительной точки предложен виртуальный пост (ВП), координаты которого и параметры его виртуальной антенны (диаграмма направленности и высота подвеса) задаются. При использовании n ВП их размещают не на одной прямой с РКП и «удаляют» от него по широте и(или) по долготе на несколько угловых ...

СИСТЕМА ДЛЯ УСОВЕРШЕНСТВОВАННОГО УПРАВЛЕНИЯ СПЕЦИАЛЬНЫМИ СВЕТОВЫМИ СИГНАЛАМИ ТРАНСПОРТНОГО СРЕДСТВА

Группа изобретений относится к световым сигналам транспортного средства. Система управления специальными световыми сигналами транспортного средства включает в себя компьютер, размещаемый в первом транспортном средстве. Компьютер содержит процессор и запоминающее устройство. Компьютер запрограммирован для сбора данных, относящихся к преследованию второго транспортного средства, использования собранных данных для распознавания поворота одного из первого транспортного средства и второго транспортного средства, и управления специальным световым сигналом в первом транспортном средстве на основании одного определенного поворота. Достигается усовершенствование управления специальными световыми сигналами транспортного средства. 2 н. и 18 з.п. ф-лы, 5 ил.

ОДНОМЕРНЫЙ ШИРОКОДИАПАЗОННЫЙ ФАЗОВЫЙ ПЕЛЕНГАТОР НА ОСНОВЕ ИСКУССТВЕННОЙ НЕЙРОННОЙ СЕТИ

Изобретение относится к системам однопозиционной пеленгации источников радиоизлучения (ИРИ) и может быть использовано в системах и комплексах пассивной радиолокации и радиотехнической разведки наземного, воздушного и космического базирования. Достигаемый технический результат - повышение быстродействия фазового пеленгатора. Указанный результат достигается за счет того, что одномерный широкодиапазонный фазовый пеленгатор состоит из антенн, соединенных с приемными устройствами, фазометра, выход которого соединен с входами приемных устройств, искусственной нейронной сети, входы которой соединены с выходами фазометра, а выходы с входами блока определения номера входа с максимальным значением сигнала, выход которого соединен с первым входом блока однозначной оценки пеленга для максимальной измерительной базы, второй вход которого соединен с выходом фазометра, формирующего разность фаз для максимальной измерительной базы, при этом первые входы блоков однозначной оценки пеленга для измерительных ...

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Изобретение относится к системам радиоэлектронного мониторинга и радиолокации и может быть использовано при разработке перспективных пассивно-активных станций радиоэлектронного мониторинга или при модернизации существующих. Техническим результатом является сокращение времени работы станций радиоэлектронного мониторинга на излучение в процессе местоопределения цели и ее сопровождения. В заявленном способе осуществляют поиск и обнаружение объекта в запеленгованном направлении, измерение его координат (дальности) с помощью РЛС и сопровождение по излучениям (переизлучениям) с использованием измеренного с помощью активного канала РЛС значения скорости. Для определения координат цели производится вычисление проекций вектора скорости цели на оси декартовой системы координат и косвенное вычисление дальности до цели по измерениям пеленгов цели пассивным каналом РЛС. Дополнительно вычисляются радиальные скорости целей, угловые координаты целей и их первые производные, обеспечивая тем самым сопровождение ...

УСТРОЙСТВО ОПТИМИЗАЦИИ ВЕСОВЫХ КОЭФФИЦИЕНТОВ СЛЕДЯЩЕЙ ФИЛЬТРАЦИИ

Изобретение относится к области радиолокации. Техническим результатом изобретения является повышение точности и достоверности разведывательной информации радиолокационной станции и уменьшение ошибки определения координат цели на траектории движения. Такой результат достигается за счет использования устройства оптимизации весовых коэффициентов следящей фильтрации, состоящего из блоков: имитации траектории движения цели, флуктуации эффективной поверхности рассеивания, моделирования сканирования и диаграммы направленности антенны, оценки потенциала и вероятности обнаружения, оценки потенциальных ошибок определения координат, синхронного вывода информации, следящей фильтрации и оценки эффективности. 1 ил.

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СПОСОБ ТРАССИРОВАНИЯ НАЗЕМНЫХ И МОРСКИХ РАДИОИЗЛУЧАЮЩИХ ЦЕЛЕЙ

Изобретение относится к области авиационной техники. Технический результат заключается в повышении точности и скорости оценки местоположения радиоизлучающих целей (РИЦ) с заданной гарантированной точностью, а также сокращении время формирования данной оценки. Заявленный способ включает поступление информации о радиоизлучающих целях от системы радиотехнической разведки (РТР) и широкополосной пассивной головки самонаведения (ШПРГС) в блок трассового сопровождения объектов (ТРСО) и в блок обработки информации ШПРГС, в которых выполняется преобразование полученной информации в стандартный пеленг измерения, по которому производится дальнейший отбор и привязка измерения к той или иной гипотезной трассе сопровождаемого объекта. При этом при взаимодействии по каналам связи с другими самолетами информация о РИЦ поступает по меньшей мере от одного взаимодействующего летательного аппарата (ЛА) в блок обработки информации о РИЦ группы ЛА (ОРГ). Блок ТРСО обеспечивает блок ОРГ информацией по сопровождаемым ...

СПОСОБ АДАПТИВНОГО СОПРОВОЖДЕНИЯ ЦЕЛЕЙ С ФОРМИРОВАНИЕМ СТРОБА В СВЯЗАННОЙ С ЦЕЛЬЮ СИСТЕМЕ КООРДИНАТ

Изобретение относится к области радиолокации, в частности к вторичной обработке радиолокационной информации, и предназначено для использования в системах сопровождения подвижных целей. Технический результат - повышение достоверности радиолокационной информации достигается за счет того, что строб формируют в связанной с целью системе координат в форме усеченного эллиптического шарового сектора, ограниченного по курсу, углу наклона траектории и дальности значениями K, K, φ, φи D, Dсоответственно, значения K, Kрассчитывают исходя из оценок курса и среднеквадратичного отклонения (СКО) курса с учетом рассчитанной скорости изменения курса, значения φ, φрассчитывают исходя из оценок угла наклона траектории и СКО угла наклона траектории с учетом рассчитанной скорости изменения угла наклона траектории, a D, D- исходя из оценок скорости и СКО скорости с учетом рассчитанного линейного ускорения, а отклонения, вычисляемые при текущем i-м обращении к цели, используют для адаптации формы и размеров строба ...

МОДУЛЬ ПРОСТРАНСТВЕННОЙ ОБРАБОТКИ РАДИОТЕХНИЧЕСКИХ СИГНАЛОВ

Изобретение относится к радиолокационной технике и может быть использовано для пространственной обработки радиотехнических сигналов. Достигаемый технический результат - улучшение функциональных возможностей модуля пространственной обработки радиотехнических сигналов за счет реализации процедуры повышения разрешения по азимуту. Указанный результат достигается тем, что модуль пространственной обработки радиотехнических сигналов содержит блок принятия решений, в который дополнительно введены блок порогового детектирования, четыре канала, каждый из которых состоит из N скоростных фильтров, где N определяется из условия определения точности радиальной скорости цели, каждый скоростной фильтр содержит М блоков обработки дискрет дальности, где М определяется из условия определения точности пространственных координат, первый, второй и третий выходы каждого канала соединены с соответствующим выходом модуля пространственной обработки радиотехнических сигналов, соответствующий вход которого соединен ...

СИСТЕМА ПРЕДУПРЕЖДЕНИЯ ДЛЯ ТРАНСПОРТНОГО СРЕДСТВА

... 1. Система предупреждения для транспортного средства, которая включает в себя компьютер с процессором и запоминающим устройством, запрограммированный для:сбора данных, относящихся к одному или нескольким объектам вблизи первого транспортного средства, причем один или несколько объектов представляют собой второе транспортное средство;использования собранных данных для построения виртуальной карты с одним или несколькими объектами, включающими в себя второе транспортное средство;определения того, что второе транспортное средство вероятно проедет в пределах заранее заданного расстояния от первого транспортного средства, тем самым создавая угрозу столкновения, иинициирования действия на основании обнаруженной угрозы;причем заранее заданное расстояние определено сравнением текущей интенсивности дорожного движения с заранее заданным пороговым значением интенсивности дорожного движения.2. Система по п. 1, в которой компьютер дополнительно запрограммирован для регулировки порогового значения интенсивности ...

Способ мониторинга пространства

Изобретение относится к способам обзора пространства в многоцелевых системах радиомониторинга и может быть использовано в условиях умеренных нагрузок сетей или в условиях небольшого числа активных абонентских станций. Техническим результатом является повышение быстродействия поиска радиообъектов. В заявленном способе область пространства, в которой осуществляют поиск радиообъектов, задают в виде телесного угла с помощью зеркальной антенны с механическим приводом, снабженной переключателем режимов и соединенной с приемным устройством. В вычислитель с запоминающим устройством вводят параметры, задающие границы зоны сканирования в азимутальных и угломестных направлениях, информацию о типах систем, подлежащих мониторингу, и частотных диапазонах. Осуществляют сканирование пространства, в синхронизаторе формируют сигналы управления антенной, определяют угловые позиции обнаруженных направлений для последующего мониторинга и вместе с параметрами сканирования передают их на вычислитель с запоминающим ...

Способ сопровождения траектории излучающей или подсвечиваемой внешним радиоэлектронным средством цели (варианты) и радиолокационный комплекс для его осуществления (варианты)

Изобретения относятся к области радиолокации и могут быть использованы в комплексах, состоящих из радиолокационных модулей (РЛМ): радиолокационных станций или радиолокационных приемопередающих модулей. Достигаемый технический результат - сокращение времени использования активного режима РЛМ при независимом сопровождении ими траектории излучающей или подсвечиваемой внешним радиоэлектронным средством (далее излучающей) цели и исключение ложных целей. Указанный результат по первому варианту способа достигается тем, что в способе сопровождения траектории излучающей цели, основанном на пеленгации ее из разнесенных в пространстве точек по излучениям (отражениям) и на вычислении дальности до цели, пеленгацию цели выполняют с помощью двух или более РЛМ, входящих в радиолокационный комплекс (РЛК), при этом РЛМ в едином времени обмениваются параметрами графиков изменения пеленга, на основе экстраполяции параметров графиков вычисляют прогнозируемые дальности, вырабатывают стробы сопровождения по пеленгам ...

Способ нелинейного управления инерционным приводом антенны, обеспечивающий высокую устойчивость сопровождения интенсивно маневрирующих объектов

Изобретение относится к нелинейным системам управления угломером, в частности к системам управления пеленгаторами, следящими за интенсивно маневрирующими целями. Достигаемый технический результат – повышение устойчивости и точности сопровождения маневрирующих целей. Указанный результат достигается за счет обеспечения адаптивной чувствительности сигналов управления к ошибкам сопровождения, при этом сигнал управления приводом угломера формируют по определенному закону. 8 ил.

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Изобретение относится к области радиотехники и может быть использовано в многопозиционных радиотехнических системах, установленных на летательных аппаратах, для определения координат источников импульсного радиоизлучения (ИРИ). Достигаемый технический результат - повышение точности определения местоположения ИРИ. Указанный результат достигается путем приема как прямых, так и зеркально переотраженных землей сигналов, при этом размещают, по меньшей мере, три приемных пункта (ПП) на соответствующих беспилотных летательных аппаратах, по сигналам блоков навигационно-временного обеспечения в каждом ПП осуществляют определение их координат в пространстве, передают координатную информацию на наземный пункт приема и обработки (НПУО), каждый ПП при обнаружении прямого сигнала ИРИ ретранслирует момент его обнаружения на НПУО, на каждом ПП определяют наличие зеркально переотраженного земной поверхностью сигнала, ретранслируют момент его обнаружения на НПУО, где измеряют величину задержки между прямыми ...

УСТРОЙСТВО РАСПОЗНАВАНИЯ ВОЗДУШНО-КОСМИЧЕСКИХ ОБЪЕКТОВ В ДВУХДИАПАЗОННЫХ РАДИОЛОКАЦИОННЫХ КОМПЛЕКСАХ С АКТИВНЫМИ ФАЗИРОВАННЫМИ АНТЕННЫМИ РЕШЕТКАМИ (АФАР)

ОДНОПОЗИЦИОННЫЙ СПОСОБ ОПРЕДЕЛЕНИЯ КООРДИНАТ МЕСТОПОЛОЖЕНИЯ ИСТОЧНИКОВ РАДИОИЗЛУЧЕНИЯ

СПОСОБ РАНЖИРОВАНИЯ ВОЗДУШНЫХ ЦЕЛЕЙ

СПОСОБ МЕСТООПРЕДЕЛЕНИЯ ИСТОЧНИКА ИЗЛУЧЕНИЯ ТРИАНГУЛЯЦИОННЫМ МЕТОДОМ С БОРТА ЛЕТАТЕЛЬНОГО АППАРАТА

Изобретение относится к способам определения местоположения неподвижного источника излучения с борта летательного аппарата пеленгационными методами. Техническим результатом является повышение точности местоопределения источника излучения с борта летательного аппарата триангуляционным методом при неточном знании измерительной базы. Заявленный способ заключается в последовательной пеленгации источника излучения при прямолинейном полете летательного аппарата, фиксации первой и второй точек пеленгации, в которых углы пеленга достигают заданных значений, составляющих в сумме развернутый угол, определении измерительной базы как расстояния между первой и второй точками пеленгации и оценке местоположения источника излучения по двум углам пеленга и измерительной базе. При этом дополнительно по достижении второй точки пеленгации нормируют известное значение среднеквадратической ошибки измерительной базы к рассчитанной по оцененному местоположению источника излучения дальности до него по линии траверза ...

VERFAHREN UND VORRICHTUNG ZUR ELEKTROMAGNETISCHEN LENKUNG , INSBESONDERE ZUR ZIELVERFOLGUNG

Abstandsmessungsverfahren und -vorrichtung

Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Bestimmen eines Abstands oder eines Standorts einer entfernten Vorrichtung oder eines Reflektors, wobei das Verfahren Folgendes umfasst: Empfangen eines Signals von einem entfernten Signalgeber, der mit der entfernten Vorrichtung verbunden oder darin enthalten oder daran befestigt ist; Schätzen einer ersten Laufzeitverzögerung, die mit dem empfangenen Signal verbunden ist, wobei die erste Laufzeitverzögerung einen ersten Kandidaten für eine korrekte Laufzeitverzögerung darstellt; Ableiten einer Beziehung zwischen dem ersten Kandidaten und einem oder mehreren anderen Kandidaten für eine korrekte Laufzeitverzögerung vom empfangenen Signal; Bestimmen mehrerer anderer Kandidaten für eine korrekte Laufzeitverzögerung basierend auf der Beziehung; Erzeugen eines Likelihood-Histogramms basierend auf den Kandidaten für eine korrekte Laufzeitverzögerung; Auswählen einer Laufzeitverzögerung von den Kandidaten basierend auf dem Likelihood-Histogramm ...

QUANTIZER SYSTEM FOR RADAR DATA PROCESSING

... 1300243 Pulse radar BURROUGHS CORP 5 Feb 1970 [27 May 1969] 5630/70 Heading H4D In a clutter-reducing pulse and scanning radar, the echo video signal for a given range/ azimuth sector is passed to an "azimuth filter" 12 and thence to a slicer 18, a signal derived from the azimuth filter is passed to a "range filter'' 22 which feeds a gain circuit 24 to control the slicing threshold, and a memory stores the gain and range and azimuth filter parameters for the sector when the surveillance thereof is completed for the "present" scan, the parameters being utilized as initial settings when the same sector is surveilled in a succeeding scan. In the embodiment the echo video input is selected by a switch 10 from the signals shown. Azimuth filter 12 consists of differential amplifiers 21, 23, a controlled attenuator 27 and a line 33 introducing a delay equal to the radar pulse repetition period. The action of the filter with various inputs is detailed Figs. 5 to 8 (not shown) and frequency response ...

Radar system

Improvements in or relating to Radar Systems

... 1,192,601. Radar display. MARCONI CO. Ltd. 26 Oct., 1967 [9 Jan., 1967], No. 1158/67. Heading H4D. The specification describes a radar P.P.I. display wherein a rectangular portion of the display may be gated off for separate display and wherein the size of said rectangle varies with its distance from the P.P.I. centre (i.e. range) such that the angle subtended by said rectangle at the centre of the P.P.I. remains approximately constant. If the centre coordinates of the rectangle are x and y, and range r = x#2 + y2, then the size of the rectangle must vary as r2/x + y, or to a good approximation as 1À707r- 0À707(x + y). A resolver 3, Fig. 1, driven in synchronism with the aerial unit, is fed the sawtooth output of generator, 4 to provide deflection sawtooth voltage proportional to sin # and cos #, # being the instantaneous direction of the aerial. These voltages are fed to the P.P.I. deflection coils and also to respective x and y channels. The sin # deflection ...

Track handover between regions within a surveillance area.

Reducing tracking errors in an area comprising touching surveillance regions involves: transmitting a plurality of signals into a region, receiving signals scattered from the region and analysing the received signals to produce target measurements; dividing each region into a number of zones comprising an edge zone at each edge of said region and one or more centre zones; associating target measurements with appropriate zones; apportioning said measurements into data blocks of a storage means such that each pair of adjoining edge zones form a single data block and each central zone forms a data block; updating target tracks in each data block using said target measurements; allocating target tracks from each data block to the correct region; and displaying the tracks on a visual display means. A separate list of tracks for those targets contained in the edge track zone of touching regions is maintained. In this way a single track will be maintained for a target moving in the edge zones ...

Dual Mode Radar System

The system operates in low resolution tracking mode as well as a high resolution mode. In the low resolution mode, a region of space is repeatedly scanned with a transmitting beam of radar pulses using a plurality (A-D fig 4) of PRF's and a receiving beam to receive the radar returns. The returns are processed to obtain bearing range and radial velocity data for detected targets. After a target has been detected, on subsequent scans, higher resolution modulated pulses at one of the PRF's (fig 5) are transmitted in the vicinity of the target, and the range gating in store 19 only takes place in the region of the target range obtained from the lower resolution mode, and successive radar returns are motioned compensated using the radial velocity obtained during the lower resolution mode, before the returns are processed to obtain range and Doppler or radial velocity data. Processing demands are thus reduced and high resolution is available in real time.

Automatic data handling device

... 971,466. Pulse radar. SOC. NOUVELLE D'ELECTRONIQUE ET DE LA RADIOINDUSTRIE. Feb. 14, 1961 [Feb. 19, 1960], No. 5483/61. Drawings to Specification. Heading H4D. In the automatic digital processing of data representing the co-ordinates of an object, measured plane co-ordinates A of the object are compared with predetermined co-ordinates B defining an area, such that if co-ordinates A fall within that area a third co-ordinate is added to co-ordinates B, and the arrangement includes different stores for co-ordinates A and B, digital computing circuits, and continuous measurement of co-ordinates A. The invention is particularly described as applied to a scanning- beam pulse radar providing spherical polar coordinates A from which (1) a device D derives spherical polar co-ordinates A1 representing the centre of a target, (2) a co-ordinate converter provides three-dimensional Cartesian co-ordinates A11, the X, Y components of which are released by a pulse from device D to feed ...

Improvements in or relating to radar systems

... 1,003,390. Radar. TELEFUNKEN PATENVER-WERTUNGS G.m.b.H. Oct. 13, 1961 [Oct. 13, 1960], No. 36902/61. Drawings to Specification. Heading H4D. In a pulse radar system having a rotating antenna a predictor computer (not described) estimates the probable future position of a moving target from previous target positions. Signals from targets not within the predicted zone are rejected. The received signals are fed to a digital detector, the output of which supplies a buffer store which feeds the signals, uniformly distributed in time, to the visual display. To prevent overloading of the store, the signals applied to it are subjected to two restrictions, first only those above a threshold value are used and secondly, of these, only those from the most probable target zone are selected. The choice of signals from threshold and zone considerations is effected in a filter, which feeds the store and which is subject to control from the computer. Each probable target position, calculated by the computer ...

SYSTEM FOR AUTOMATICALLY GENERATING SMOOTHING PARAMETERS IN AN AUTOMATIC TRACK-WHILE-SCAN RADAR SYSTEM

... 1,244,308. Tracking radar. HUGHES AIRCRAFT CO. 13 Dec., 1967, No. 56729/67. Heading H4D. In a track-while-scan pulse radar, signals representing smoothed target position, smoothed velocity information and predicted target position information are derived by generating a variable smoothing term as a function of scan time are the time between successive scans in which signals are received from the target. Both the smoothed target position and the velocity information signals are formed by smoothing parameters which are functions of the variable smoothing term Tn. The term Tn may have three values: # n-1 , T scan (the system time scan) or #t (time between successive scans in which signals are received from the target. The three values may be multibit numbers which are applied to the gate 49, which provide a multibit output representing #n equal to one of the three inputs. The gate 49x functions only when the system is in a normal correlation mode. The multibit gates 46, 47, 48 are controlled ...

NAVIGATION APPARATUS

... 1490588 Radio navigation system SPERRY RAND CORP 22 May 1975 [24 June 1974] 22078/75 Heading H4D Passage of vessels through a confined navigation channel, via a dangerous way point, e.g. bend F, Fig. 1, is monitored, possibly together with passage of the vessels along lanes joining other way points A-E, by means of a fixed radar installation 56 supplying position and speed information on the vessels to a PPI display 61, Fig. 8, and also to a computer 55 controlling the production of (predicted distance along channel versus time from present) lines 133, 134, 135, 136 on a C.R.T. display 45, Fig. 3, the display indicating the radar determined "now" positions 33, 34 of two vessels at 1 N mile from way point E and 1 N mile from way point G respectively and the computer generating, from their respective determined speeds of 15 and 10 knots, their predicted passage, including their passing-by position and time, i.e. 6À5 N miles from E at 22 minutes from "now". If the predicted passage is too ...

Optimization of dataset

A method of optimizing a dataset from a phased-array radar to detect micro body movement of subjects due to heartbeat or respiration. The radar creates a 3D point-cloud data set, which is fed into an object identification algorithm to create at least one group of datapoints characterized by their proximity and their pattern of movement. The at least one group belonging to a single subject. Aggregating the datapoints of the group to form a velocity signal. Extracting heart rate or respiration rate from the group by either a) estimating a spectral density from the velocity signal of the group, and extracting a most dominant frequency, setting said most dominant frequency as heart rate or respiration rate, or b) applying a machine learning model on the velocity signal of the group to extract a frequency of the velocity signal, setting the frequency as heart rate or respiration rate. Preferably both a and b are performed in parallel and used as an input for an ensemble learning method.

BOOLEAN FILTER PROCEDURE AND EQUIPMENT FOR IT.

Sequential multi-beam radar for maximum likelihood tracking and fence search

A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.

Fire control system

METHOD AND DEVICE FOR MAGNETIC GUIDANCE, ESPECIALLY FOR TRACKING TARGETS

OBJECT DETECTION METHOD

A dummy target is set at a position which is in the same direction as that of a detected target and which is located at a distance twice thereof. A twice-frequency wave target detection range is set in a specified range including the dummy target position. A target detected in the twice-frequency wave target detection range is determined to be a twice-frequency wave target. An interpolated target is set at a position which is in the same direction as that of the twice-frequency wave target and which is located at a distance half thereof. A basic wave target detection region is set in a specified range including the interpolated target position. If no basic wave target is detected in the basic wave target detection region, then the interpolation target is output as a basic wave target. Even if, as mentioned above, the basic wave target is in an undetected state at close range, data regarding the basic wave target are estimated and output by means of an interpolated target calculated from ...

MARINE TRAFFIC CONFLICT ASSESSMENT SYSTEM

PLOT GENERATOR

SYSTEM FOR 3D TRACKING OF A REMOTE POINT

Le précis n'est pas disponible en Not Yet Available ce moment ...

METHOD FOR DETERMINING AN IMPACT POINT OF A FIRED PROJECTILERELATIVE TO THE TARGET

The invention relates to a method for determing an impact point of a fired projectile (5) relative to a surface or air target (6). The impact point is determined by tracking the target (6) with a first beam (10) , while directing a second beam (11) above the target (6), waiting for the projectile (5) to be situated within the second beam (11) and subsequently by predicting the projectile's impact point through the extrapolation of measuring data of the second beam (11).

Automatische Anzeigestation

Dispositif de poursuite automatique associant un radar de poursuite à des radars de surveillance

Korrelator und Detektor für die Videosignale einer Radaranlage

Target following device has target estimator as pseudo-sensor with stage for converting signals into pseudo-deviation signals for optimal weighting computation

The target following device has at least one sensor (Rad,TVT,Stk) with a target estimator (Ze) and a sensor servo (S) controlled by an optimally weighted mean deviation sensor signal. The target estimator is a pseudo-sensor and has an arrangement for converting the signals into pseudo-deviation signals at the estimator output and for providing them for the optimal weighting computation. An Independent claim is also included for a target-following method.

Estimating an angle of a human target using a millimeter wave radar

Methods and instruments for estimating target motion

The present invention relates to a measuring instrument and methods for such a measuring instrument for tracking a moving object, measuring a distance to an object. According to the invention, sets of target position data including at least horizontal (Ha) and vertical angle (Va) between the measuring instrument (1) and said at least one target (9) in consecutive measurements during a measurement session are obtained (40; 50; 60; 70); a model describing a path of and/or a distance to the target (9) is calculated; at least a present position of the target is estimated (44; 53; 65; 74) using the model; and, the estimated position of the target (9) is used (45; 56; 67; 79) when searching for the target (9).

METHOD FOR AVOIDING LOSSES HOOKING ON TRACKING RADARS, LOSS DUE FALSE TARGETS

Improvements to circuits and calculation method applied to processing information

Improvements with the devices of semi-automatic continuation

AIRBORNE RADAR HAS BROAD ANGULAR COVER, IN PARTICULAR FOR the FUNCTION OF DETECTION AND AVOIDANCE Of OBSTACLE

ADAPTIVE DETECTION METHOD OF A TARGET BY A RADAR DEVICE STATIONARY IN THE PRESENCE OF INTERFERENCE, AND RADAR AND MISSILE SEEKER FOR IMPLEMENTING SUCH A METHOD

Method for e.g. monitoring terrestrial targets moving at ground surface by using position measurements from radar sensor onboard on e.g. aircraft, involves defining tracking plane associated to target, so as to be tangent to surface

Procédé de pistage d'une pluralité de cibles terrestres, se déplaçant à la surface de la terre, au moyen de mesures issues d'au moins un capteur de détection embarqué à bord d'une plateforme de détection, dans lequel, pour chaque cible, on réalise cycliquement les étapes suivantes : - définition d'un plan de pistage (PI) de ladite cible à un instant de définition du plan de pistage (tdp), - pistage de ladite cible, en supposant que ladite cible se déplace dans son plan de pistage (PI), le plan de pistage (PI) associé à une cible étant défini de sorte à être tangent à la surface de la terre (S) à la position de ladite cible à l'instant de définition du plan de pistage.

ESTIMATED DISPLAY UNIT OF the CHARACTERISTICS OF SEA TRANSPORT

DATA PROCESSING MULTI-TARGET FOR PASSIVE RADARS MULTI-RECEPTEURS IN MODE SFN OR MFN

METHOD AND DEVICE FOR PROTECTING THE LOW ALTITUDE AIRCRAFT AGAINST GROUND AIR MISSILES

Procédé de protection pour aéronefs évoluant à basse altitude vis-à-vis de missiles sol/air comportant une étape de détection d'approche passive (1) de désignation de menaces pour élaborer des pistages bruts en direction de ces menaces, une étape de détection active (2) déclenchée à partir de la désignation brute fournie par traitement de la détection passive, une étape de traitement des données de détection respectives (3,4), passive et active, pour extraire respectivement des pistages bruts et des pistages précis à partir des détections précédentes et des informations de positionnement de l'aéronef (8), et une étape de gestion de ces données (5) par fusion pour former une hiérarchisation de ces menaces débouchant sur l'élaboration d'un ordre de traitement des menaces, d'un choix de contre-mesures en fonction de cet ordre, et de valeurs de paramètres adaptées pour son déploiement.

PROCESS OF REGULATION OF LOAD Of a RADAR

La présente invention conceme les techniques de régulation de la charge d'un radar. Le procédé de régulation selon l'invention est destiné à être mis en oeuvre avant l'étape d'ordonnancement en ligne. Il comprend au moins les étapes suivantes : (a) une étape de simulation (SIM), au cours de laquelle on simule sur une à plusieurs trames l'ordonnancement de demandes de pointages, ces demandes de pointages comprenant des premières demandes de pointages non urgents (P1) qui sont destinés à être joués de manière périodique par le radar, et des secondes demandes de pointages urgents fictives (P2) qui sont générées (GA) de manière aléatoire, le résultat de la simulation étant positif si les premières et les secondes demandes de pointages peuvent tous être ordonnancées, le résultat étant négatif sinon; (b) une étape de réduction de charge (RED) si le résultat de la simulation est négatif, la réduction de la charge étant obtenue en agissant sur les premières demandes de pointages non urgents. L'invention ...

비-가시선 레이더-기반 제스처 인식

... 이 문서는 비-가시선 레이더-기반 제스처 인식을 위한 기법들 및 디바이스들을 기술한다. 본원에 기술되는 기법들 및 디바이스들의 사용을 통해, 사용자들은, 그 제스처들이 자신의 디바이스의 센서들의 가시선 내에 있지 않을 때에도, 허공(in-the-air) 제스처들을 통해 자신의 디바이스들을 제어할 수 있다. 따라서, 기법들은, 사용자가 온도조절기의 제스처 센서로부터 가려질 때 방 안의 온도를 낮추거나, 사용자가 미디어 플레이어와 상이한 방에 있을 때 미디어 플레이어의 볼륨을 높이거나, 또는 사용자의 제스처가 의자, 소파, 또는 다른 장애물에 가려질 때 텔레비전 프로그램을 일시정지시키는 것과 같이, 제어가 요구되지만 종래의 기법들이 유효 제어를 허용하지 않는 많은 상황에서, 사용자들이 자신의 디바이스들을 제어할 수 있게 한다.

METHOD FOR DETERMINING THE IMPACT POINT OF A PROJECTILE FIRED AT A TARGET ABOVE SEA SURFACE, AND RADAR SYSTEM IMPLEMENTING SUCH METHOD

SEARCH-WHILE-TRACK SYSTEM

Multiple-sensor tracking processing method with reduced latency time

A multiple-sensor tracking method, notably implemented in an air traffic control system, making it possible to reduce the latency time introduced by the tracking system, characterized in that the correlation (302) and association (303) functions work on the basis of membership of the detections (502) and of the tracks (503, 504) to cells (510, 511) defining a subdivision into a grid (501) of the surveillance area represented on a stereographic projection plane.

AZIMUTH ESTIMATION DEVICE AND METHOD

In an azimuth estimation device, a center generation unit configured to generate, for each peak bin extracted by the extraction unit, a center matrix which is a correlation matrix obtained using values of the same peak bin collected from all of transmitting/receiving channels. A surrounding generation unit is configured to generate, for each of one or more surrounding bins of each of the peak bins, a surrounding matrix which is a correlation matrix obtained using values of the same surrounding bin collected from all of the transmitting/receiving channels. An integration unit is configured to generate, for each peak bin, an integrated matrix which is a correlation matrix obtained by weighting and adding the center matrix and the one or more surrounding matrices. An estimation unit is configured to execute an azimuth estimation calculation using the integrated matrix generated by the integration unit.

Retrodirective noise-correlating (RNC) radar methods and apparatus

Embodiments of the present invention provide retrodirective noise-correlating radar that include: (1) a transmit antenna array that quiescently transmits random noise; (2) a receive antenna array, in a desired spatial relationship with the transmit antenna array, for collecting the reflected noise from a target; and (3) RF electronic components interconnecting antenna-element pairs between the receive and transmit arrays. In one group of embodiments, the radar automatically transforms the broad pattern from each element of the array (when transmitting or receiving random noise), to a narrow pattern characteristic of the entire array. In a second group of embodiments, a presence of a target and its range are determined quickly by a quasi-coherent build-up of signal in the time or frequency domains. In third group of embodiments a target angle and velocity vector are determined by cross correlation between two or more electronic channels connecting the transmit and receive arrays.

Radar apparatus and method of displaying trail

The purpose is to provide a radar apparatus which can create and display only necessary trail data. The radar apparatus may include an acquisition module, an echo data creation module, a memory, a trail data creation module, and a display unit. The acquisition module may acquire an echo based on a reflected wave from a target object, of a transmitted electromagnetic wave. The echo data creation module may create, based on the echo, echo data at least indicative of a position of the target object. The memory may store determination data set, for every given display area, whether trail data indicative of a moving trail of the target object is to be newly created based on the echo. The trail data creation module may create the trail data based on the echo and the determination data. The display unit may display the echo data and the trail data.

SYSTEM AND METHOD FOR FUSING ASYNCHRONOUS SENSOR TRACKS IN A TRACK FUSION APPLICATION

An example method can include receiving, at a sensor, a signal associated with a motion of a target, processing the signal via a first filter having a first motion model and a second filter having a second motion model to yield a first tracking output and a second tracking output for the target, and weighting the first tracking output and second tracking output according to how well each of the first motion model and second motion model represents the motion of the target, to yield a first weight for the first tracking output and a second weight for the second tracking output. The method can include combining the first tracking output and second tracking output to yield a fused tracking output and sending, to a fusion system, the fused tracking output, the first weight associated with the first tracking output and the second weight associated with the second tracking output.

RADAR SIGNAL PROCESSOR

PURPOSE: To eliminate massive processing of unnecessary data at a far distance while minimizing escape from the tracking at a close distance by varing the azimuth-wise length of a window according to the distance. CONSTITUTION: The center position C of a window W is determined from the size of a target and the distance R thereof from a video signal V inputted with a window factors decision circuit 5. A window with (a) in the direction of azimuth is decided so as to be reversely proportional to the distance R. The window width (b) in the direction of distance is always fixed as the maximum value is 1. A window W is generated with a window generation circuit 4 from factors thus obtained and a video signal V' is extracted with a gate circuit 1. The expanse of a video is reduced to one point with a gravity center computing circuit 2 and the target position is determined with a target position decision circuit 3. This enables an accurate detection of the target position thereby eliminating unnecessary ...

TRACKING RADAR DEVICE

PURPOSE: To perform the time division tracking to plural targets in the same beam and the same range cell, by subjecting the target error signal to moving square average, comparing it with the reference signal, and making it possible to discriminate plural targets exisiting in the same beam. CONSTITUTION: The angle error signals Δψn, Δθn from the gate circuit 16, and the distance error signal ΔRn from the range sensor 151 become the difference between the target and the forecasting angle, and the difference between the target and the forecasting distance, respectively, and the said each error signal is provided to the integrating comparators 19, 20, respectively. The comparators 19, 20 subject the target error signal to moving square average, compare it with the reference signal, and discriminate plural targets existing in the same beam. In case plural targets have been discriminated, the existing position information of plural separated targets is given to the angle tracking devices 25 ...

Способ идентификации уводящей помехи

Изобретение относится к радиолокационным системам обнаружения и идентификации помех и может быть использовано при их разработке. Техническим результатом изобретения является повышение вероятности идентификации помех, обеспечивающих согласованный увод по дальности и скорости, за счет использования дополнительной информации об ускорении цели и изменении угловой скорости линии визирования в горизонтальной или вертикальной плоскостях. Сущность заявляемого способа состоит в том, что при выполнении условия Δ Подробнее

АВТОНОМНАЯ СПУТНИКОВАЯ ОРБИТАЛЬНАЯ СИСТЕМА УКЛОНЕНИЯ ОТ КОСМИЧЕСКОГО МУСОРА

Группа изобретений относится к управлению движением искусственных спутников с целью предотвращения их столкновений с фрагментами космического мусора. Бортовая система спутника определяет радиолокационными средствами вероятность таких столкновений со всех направлений внутри сфероида вокруг спутника. При достаточно высокой вероятности система рассчитывает на основе генерируемых ею эфемеридных данных для спутника и фрагментов мусора траекторию уклонения. Последняя реализуется двигателями малой тяги, при выполнении требования минимального изменения орбиты спутника. Техническим результатом группы изобретений является повышение надежности и упрощение процедуры уклонения спутника от столкновений с космическим мусором в автономном или полуавтономном режиме. 2 н. и 30 з.п. ф-лы, 4 ил.

СПОСОБ ОПРЕДЕЛЕНИЯ КООРДИНАТ НАЗЕМНОГО ИСТОЧНИКА ИЗЛУЧЕНИЯ С САМОЛЕТА И УСТРОЙСТВО ЕГО РЕАЛИЗАЦИИ

Изобретение относится к методам определения координат наземного источника излучения угломерным способом с использованием фазового пеленгатора, размещенного на борту самолета, выполняющего полет в сторону источника излучения. Техническим результатом изобретения является повышение точности определения координат источника излучения с борта самолета. В заявленном способе дополнительно продолжают горизонтальный полет самолета с постоянным курсом и совершают последовательно маневры самолета в виде крена в разные стороны, при этом на каждом i-ом маневре в крайних положениях крена и при нулевом крене измеряют угол на источник излучения. Осуществляют оценку углов на источник излучения с помощью рекуррентного фильтра Калмана отдельно для левого, правого и нулевого кренов самолета. В случае нулевого крена самолета запоминают значение оцененного угла на источник излучения и рассчитывают приближенно дальность до источника излучения. В случае ненулевого крена с использованием полученной оценки угла на ...

Способ определения направления на объект и предполагаемого промаха на борту беспилотного летательного аппарата

Изобретение относится к области вторичной цифровой обработки сигналов и может быть использовано в бортовой цифровой вычислительной машине (БЦВМ) беспилотного летательного аппарата (БПЛА) при его самонаведении на объект. Техническим результатом является повышение достоверности распознавания варианта тактической ситуации и оценки фазовых координат взаимного перемещения объекта и БПЛА. Заявленный способ заключается в распознавании реализуемого варианта тактической ситуации, включающего сектор нахождения точки мгновенного промаха БПЛА, тип объекта, значение поперечной перегрузки, наличие ослепления информационно-измерительной системы (ИИС). Одновременно формируют оценки радиальных дальности до объекта, скорости сближения БПЛА с объектом, постоянной и флуктуационной составляющих этой скорости, флуктуационной составляющей ускорения относительного перемещения БПЛА и объекта, положения линии визирования БПЛА на объект по азимуту и углу места, азимутальных и угломестных составляющих угловой скорости ...

Способ и система многоцелевого сопровождения в двухпозиционных радиолокационных системах

Изобретение относится к радиолокации и может быть использовано при разработке перспективных многопозиционных радиолокационных систем и их модернизации. Достигаемый технический результат - повышение достоверности и точности отождествления воздушных объектов в режиме многоцелевого сопровождения для двухпозиционных радиолокационных систем. Сущность способа состоит в том, что для каждого приходящего измерения от всех воздушных объектов с любой информационной позиции формируются косвенные измерения на ведущей (первой) позиции, на основе которых для каждой отслеживаемой траектории проверяется выполнение определенных условий для полученных координат воздушного объекта (попадание в строб отождествления) Для той траектории, для которой данные условия выполняются, производится коррекция прогноза, при это сам прогноз (экстраполяция) осуществляется по соответствующим правилам. Система многоцелевого сопровождения для двухпозиционной радиолокационной системы предназначена для реализации способа и выполнена ...

МУЛЬТИПЛИКАТИВНЫЙ РАЗНОСТНО-ОТНОСИТЕЛЬНЫЙ СПОСОБ ДВУХМОБИЛЬНОГО ОПРЕДЕЛЕНИЯ КООРДИНАТ МЕСТОПОЛОЖЕНИЯ ИСТОЧНИКА РАДИОИЗЛУЧЕНИЯ

Изобретение относится к области радиотехники, а именно к системам радиоконтроля для определения местоположения источников радиоизлучения. Техническим результатом является определение пространственных координат местоположения стационарных источников радиоизлучений (ИРИ) двумя мобильными (на любой транспортной базе: автомобильная, вертолетная, корабельная) постами, один из которых принят за базовый, простым способом без привлечения уравнений линий положения. Способ основан на использовании измерений мобильными постами радиоконтроля значений уровней сигналов на каждой из назначенных частот не менее чем в трех точках пространства и преобразовании в мультипликативные функции разностей их обратных отношений и разностей отношений вычисленных расстояний от точек измерения до пробной точки предполагаемого местоположения источника радиоизлучения. Для обработки составленных мультипликативных функций указанных разностей отношений предложен дихотомический способ. В его основе лежит принцип последовательного ...

СПОСОБ ОПРЕДЕЛЕНИЯ ДАЛЬНОСТИ И РАДИАЛЬНОЙ СКОРОСТИ ЦЕЛИ В РЛС С НЕПРЕРЫВНЫМ ИЗЛУЧЕНИЕМ И УСТРОЙСТВО ЕГО РЕАЛИЗУЮЩЕЕ

Изобретение относится к радиолокации и может использоваться в радиотехнических системах с непрерывным излучением для определения дальности и радиальной скорости высокоскоростных целей со сниженной радиолокационной заметностью. Достигаемый технический результат - увеличение дальности обнаружения и повышение точности определения дальности и радиальной скорости высокоскоростных целей со сниженной радиолокационной заметностью. Сущность способа заключается в приеме отраженного сигнала, его демодуляции, запоминании демодулированного сигнала биений в течение периода модуляции зондирующего сигнала, определении скорости изменения частоты его линейной частотной модуляции (ЛЧМ) и расчете с ее помощью радиальной скорости цели с последующим формированием опорного сигнала, демодуляцией запомненного сигнала и определением по его частоте дальности до цели. Устройство для реализации способа содержит частотный модулятор, генератор высокой частоты, передающую антенну, а также приемную антенну, первый умножитель ...

СПОСОБ ОПРЕДЕЛЕНИЯ КООРДИНАТ И ПАРАМЕТРОВ ДВИЖЕНИЯ ИСТОЧНИКОВ РАДИОИЗЛУЧЕНИЙ

Изобретение относится к радиолокации и может быть использовано в системах измерения параметров движения наземных (надводных) источников радиоизлучений (ИРИ) с помощью пассивной однопозиционной радиолокационной станции (ПРЛС). Техническим результатом изобретения является уменьшение времени сходимости оценок дальности и скорости сближения с ИРИ при его наблюдении ПРЛС на большом удалении, когда угловая скорость вращения линии визирования мала. Указанный результат достигается разделением априорной области возможного положения ИРИ на m подобластей меньшего размера, формированием m векторов условных начальных оценок параметров состояния источника радиоизлучений в предположении, что источник находится в соответствующей подобласти, формированием m корреляционных матриц ошибок условных начальных оценок параметров состояния ИРИ, дискретной нелинейной фильтрацией параметров состояния ИРИ в m фильтрах, отличающихся начальными оценками параметров состояния ИРИ, расчетом апостериорных вероятностей гипотез ...

АДАПТИВНЫЙ ФИЛЬТР ТЕЛЕМЕТРИЧЕСКИХ ИЗМЕРЕНИЙ ДЛЯ РАБОТЫ В УСЛОВИЯХ АПРИОРНОЙ НЕОПРЕДЕЛЁННОСТИ

Изобретение относится к корабельным техническим системам, в том числе к корабельному вооружению, а именно к обработке телеметрических измерений, получаемых в реальном времени. Адаптивный фильтр телеметрических измерений предназначен для выделения полезного сигнала на фоне шумов, а также оценки ненаблюдаемых состояний в условиях отсутствия достоверной априорной информации о параметрах шума в ходе решений задач позиционирования управляемых и беспилотных аппаратов морского базирования. Указанный технический результат достигается тем, что в конструкцию известного фильтра Калмана добавлен делитель, два блока вычисления ковариации, два блока умножения и один сумматор. Добавленные блоки позволяют в процессе работы адаптивного фильтра определять значения коэффициентов усиления фильтра в условиях, когда неизвестны истинные значения дисперсий шумов измеренного сигнала. Основным преимуществом адаптивного фильтра в сравнении с существующими фильтрами является то, что он может быть использован в условиях ...

Способ идентификации уводящей помехи

СПОСОБ ИЗМЕРЕНИЯ ВЫСОТЫ, ИСТИННОЙ СКОРОСТИ ЛЕТАТЕЛЬНОГО АППАРАТА И НАКЛОНА ВЕКТОРА СКОРОСТИ ЛЕТАТЕЛЬНОГО АППАРАТА ОТНОСИТЕЛЬНО ГОРИЗОНТА, УСТРОЙСТВО БОРТОВОЙ РАДИОЛОКАЦИОННОЙ СТАНЦИИ, ИСПОЛЬЗУЮЩЕЕ СПОСОБ

Vorrichtung zur Zielverfolgung fuer abtastende Radaranlagen

Vorrichtung zur automatischen Verfolgung eines beweglichen Zieles

Auswerteeinrichtung fuer Radarsignale

Verfahren und Vorrichtung zur verbesserten Radarzielverfolgung mit Leistungsinformationen

Es sind Verfahren und Systeme zum Steuern eines Radarsystems eines Fahrzeugs vorgesehen. Insbesondere werden ein Verfahren und eine Vorrichtung für einen prädiktiven Tracking-Algorithmus zum Vorhersagen der Leistung eines Ziel-Clusters für den nächsten Rahmen und zum Bestimmen einer vorhergesagten Clusterleistung für den nächsten Rahmen gelehrt. Die aktualisierte Leistung des nächsten Clusterrahmens ist eine Funktion der vorhergesagten Leistung, der aktuell gemessenen Leistung und des SNR der Umgebung. Die Leistung des Clusters wird unter Berücksichtigung der Energie berechnet, die von jeder einzelnen Erkennung im Inneren des Clusters zurückgestreut wird.

DIGITALE SIGNALVERFOLGUNGSEINRICHTUNG

RADAR ZIELVERFOLGUNGSSYSTEM, DAS RADIOWELLEN IM MILLIMETERBEREICH VERWENDET.

Objektvereinigungssystem mehrerer Radarbildgebungssensoren

Es wird ein Verfahren zum Detektieren und Verfolgen von Objekten unter Verwendung von mehreren Radarsensoren bereitgestellt. Es werden Objekte relativ zu einem Host-Fahrzeug aus Radardaten detektiert, die durch eine Erfassungseinrichtung erzeugt werden. Die Radardaten umfassen Doppler-Messdaten. Durch einen Prozessor werden Cluster als Funktion der Radardaten gebildet. Jedes Cluster stellt ein jeweiliges Objekt dar. Jedes jeweilige Objekt wird durch den Prozessor als stationär oder nicht stationär basierend auf den Doppler-Messdaten jedes Objekts und einer Fahrzeuggeschwindigkeit des Host-Fahrzeugs klassifiziert. In Ansprechen darauf, dass das Objekt als nicht stationäres Objekt klassifiziert wird, wird eine Zielverfolgung durch den Prozessor auf ein Objekt unter Verwendung der Doppler-Messdaten über der Zeit angewandt; andernfalls wird in Ansprechen auf das Klassifizieren des Objekts als stationäres Objekt ein Belegungsgitter aktualisiert.

Ships Radar

A method of reducing tracking errors in determining target tracks of targets ina surveillance area

RADAR TRACKING PLOT GENERATOR

Method and device for magnetic guidance, especially for tracking targets

Method for determining an impact point of a fired projectile relative to the target

Three-dimensional target tracking

The invention relates to a three-dimensional target tracking method comprising acquiring a first track generated by a first target location system having a first coverage area, said first track comprising a first position of a first target at a given time in a first relative reference system of the first target location system; acquiring a second track generated by a second target location system having a second coverage area partially overlapping the first coverage area in a coverage region shared by the two target location systems, said second track comprising a second position of a second target at the given time in a second relative reference system of the second target location system; and carrying out a correlation test and, if a same height is determined for the first and second targets, detecting that the first and second targets represent a same single target present in the shared coverage region.

Batch Detection Association for Enhanced Target Descrimination in Dense Detection Environments

The embodiments described herein relate to systems and techniques for processing batch detection information received from one or more sensors configured to observe objects of interest. In particular the systems and techniques are configured to enhance track performance particularly in dense target environments. A substantially large number of batch detections can be processed in a number of phases of varying complexity. An initial phase performs relatively low complexity processing on substantially all detections obtained over an extended batch period, approximating object motion with a simplified model (e.g., linear). The batch detections are divided and redistributed into swaths according to the resulting approximations. A subsequent phase performs greater complexity (e.g., quadratic) processing on the divided sets of detections. The subdivision and redistribution of detections lends itself to parallelization. Beneficially, detections over extended batch periods can be processed very efficiently to provide improved target tracking and discrimination in dense target environments.

Object detection method

A dummy target is set in a direction which is the same direction as that of a detected target and at the position whose distance is double that of the detected target; a second-order wave target detection area is set in the predetermined area including the position of the dummy target; the target detected in the second-order wave target detection area is judged as being a second-order wave target; a interpolated target is set in the direction which is the same as that of the second-order wave target, and at the position whose distance is half that of the second-order wave target; a fundamental wave target detection region is set in the predetermined area including the position of the interpolated target; and the interpolated target is outputted as a fundamental wave target in the case where no fundamental wave target is detected in the fundamental wave target detection region. Even if the fundamental wave target to be detected is undetected within a close range, data on the fundamental wave target is estimated and outputted on the basis of the interpolated target calculated from the second-order wave target which continues being detected, as described above. This makes it possible to continue detecting the fundamental wave target without interruption. Accordingly, it is possible to provide an object detection method which enables an object in a close range to be detected securely by a radar device.

Producing data describing states of a plurality of targets

Methods and systems for producing data describing states of a plurality of targets ( 105 A, 105 B) using a processor ( 102 ) in a system ( 100 ) having at least one onboard sensor ( 106 ). The method includes obtaining ( 404 ) data from at least one onboard sensor ( 106 A, 106 B) and performing a first data fusion process ( 412 ) on the obtained onboard sensor data to produce onboard sensor fused data. Data is also obtained ( 422 ) from at least one off-board sensor ( 108 A, 108 B), and a second, different data fusion process ( 430 ) is performed on the obtained off-board sensor data and the onboard sensor fused data to produce target state data.

Radar system and method for detecting and tracking a target

A radar system for detecting and tracking at least one target utilizing a mechanically rotated two-dimensional radar antenna system with a fan-shaped beam arrangeable on a non-stable radar platform. The radar system includes a tracking filter configured to estimate an azimuth angle of the at least one target with respect to a fixed reference coordinate system based on: azimuth angle information of at least one target radar return signal measured utilizing the radar antenna system with respect to a local coordinate system of the radar platform, and radar platform relative orientation with respect to the fixed reference coordinate system at the time of the at least one target radar return signal, such that a software-based motion-compensation of the radar platform is provided.

Moving object detection system

In a system, a detecting module cyclically detects positional information of reflection points of received echoes. A sampling module cyclically samples, from the detected reflection points for each cycle, first and second reflection points. The first and second reflection points are expected to be reflection points of the respective first and second reflective portions of a moving object in front of the system. A first determining module determines whether a distance between the first and second reflection points varies over time. A second determining module determines that the first and second reflection points correspond to reflection points of the respective first and second reflective portions of a single moving object when it is determined that the distance between the first reflection point and the second reflection point is substantially invariant over time.

Multi-target data processing for multi-receiver passive radars in an sfn or mfn mode

The invention relates to a data processing method for a multistatic radar system comprising a plurality of transmitters and receivers, each receiver being associated with one or more transmitters so as to form one or more bistatic bases. According to the invention, the method involves producing and sustaining multi-receiver Cartesian tracks from bistatic blips produced by the various receivers, and comprises: a first step in which mono-receiver Cartesian tracks are produced and sustained, each mono-receiver track consisting of blips formed by a given receiver; and a second step in which multi-receiver Cartesian tracks are produced and sustained, each multi-receiver track being constituted by merging the mono-receiver tracks together and with bistatic blips which have not been associated with a mono-receiver track. The produced tracks are transmitted together with the attributes thereof to processing means operating upstream from the method.

Method and system for predicting movement behavior of a target traffic object

A method for computationally predicting future movement behaviors of at least one target object can have the steps of producing sensor data by at least one sensor physically sensing the environment of a host vehicle, and computing a plurality of movement behavior alternatives of a target object sensed by the sensor(s). The context based prediction step uses a set of classifiers, each classifier estimating a probability that said sensed target object will execute a movement behavior at a time. The method can also include validating the movement behavior alternatives by a physical prediction comparing measured points with trajectories of situation models and determining at least one trajectory indicating at least one possible behavior of the traffic participant, estimating at least one future position of the traffic participant based on the at least one trajectory, and outputting a signal representing the estimate future position.

MULTI-TARGET DATA PROCESSING FOR MULTI-STATIC AND MULTI-CHANNEL PASSIVE RADARS

The present invention relates to the general field of radar tracking applied to multi-static radar systems. It consists of a method for coherently merging the individual tracks generated from the various bistatic bases that make up the system so as to generate and maintain global tracks so that an object detected by a single bistatic base is represented by the corresponding track and an object detected by a number of bistatic bases and giving rise to the creation of a number of individual tracks is represented only by a single global track. 1. A tracking method for multi-static and multi-channel radar systems , said method creating global merged tracks by associating the individual blips generated by the various reception channels of the various bistatic bases that make up the system , comprising:a first upstream merging step for generating, for each bistatic base, merged blips by associating individual blips relating to one and the same target, generated over time by the various reception channels of the bistatic base concerned, the merged blips produced being associated over time to form individual tracks, each individual track characterizing the trend of a given target;a second downstream merging step for generating global tracks by associating the merged blips that make up the individual tracks generated by various bistatic bases and relating to one and the same target, and by merging the measurements forming the various merged blips to form global measurements used as observation vectors to maintain the global tracks formed, so that each object detected is represented only by a single global track.2. The method as claimed in claim 1 , wherein each merged blip j being characterized by a measurement vector y=(r claim 1 , v claim 1 , θ) claim 1 , the first upstream merging step implements an operation to form individual tracks which itself comprises claim 1 , for each measurement instant:{'sub': 'j', 'a first blip merging step for associating the individual blips ...

Methods for resolving radar ambiguities using multiple hypothesis tracking

Methods for resolving radar ambiguities using multiple hypothesis tracking are described. One such method includes (a) choosing a single waveform for each of a plurality of dwells of a first scan, wherein the single waveforms of consecutive scans are different, (b) generating the first scan using the single waveform for each of the dwells of the first scan, (c) receiving observation data as a result of the first scan, the observation data comprising measured positions of true targets and false targets, (d) generating, using multiple hypothesis tracking, position predictions for true targets and false targets, (e) comparing the predicted positions and measured positions, repeating (a)-(e) until a preselected process condition is met, and determining the true targets based on the results of the comparisons.

METHOD FOR INITIALIZING CARTESIAN TRACKS BASED ON BISTATIC MEASUREMENTS PERFORMED BY ONE OR MORE RECEIVERS OF A MULTISTATIC RADAR SYSTEM

The invention consists of a method that makes it possible to produce an association of bistatic blips, formed by the different bistatic bases of a multistatic radar system comprising a plurality of transmitters and receivers remote from one another, this association making it possible to transmit to the tracking means only bistatic blips that probably correspond to one and the same target so as to facilitate the work of the tracking means. The association of blips that is produced takes into account the parameters defining, in three dimensions, the bistatic measurements (distance and speed), as well as the azimuth measurement, relating to the corresponding target. 1. Method for producing the association of bistatic blips corresponding to one and the same target detected by a multistatic radar system comprising a plurality of transmitters and receivers remote from one another , one pair (transmitter , receiver) forming a bistatic base of the system , each bistatic blip Pcorresponding to the echo originating from the signal transmitted by a transmitter Txand received by a receiver E , each bistatic blip Pbeing characterized by the transmitter Txhaving transmitted the signal of which it is the echo , wherein , the bistatic blips formed being associated with the different transmitters of the system to form a set of pairs (blip , transmitter) , it comprises:{'sub': 'j', 'a first module for forming triplets of pairs (Pi, Tx), these triplets combining pairs (blip, transmitter) which exhibit a distance and speed compatibility;'}{'sub': 'j', 'a second module for forming n-uplets of pairs (Pi, Tx), these n-uplets combining triplets formed in the preceding step satisfying given combination criteria which characterize the likelihood of the attribution of the different triplets to one and the same target;'}The duly constituted n-uplets forming packets of blips which define one and the same target.2. Method according to claim 1 , wherein the first step of forming triplets of ...

DEVICE AND METHOD FOR SELECTING SIGNAL, AND RADAR APPARATUS

A signal selecting device is provided. The signal selecting device includes a transceiver for repeatedly transceiving electromagnetic waves, a target candidate detecting module for detecting a plurality of objects based on echo signals received by the transceiver, a phase change amount calculating module for calculating a phase change amount between two echo signals from two positions of which distances from the transceiver are substantially the same but azimuths from the transceiver are different, and an object selecting module for selecting a predetermined object among the plurality of objects detected by the target candidate detecting module in a first scan based on a phase change amount of the object, the predetermined object being the same object as an object selected by the object selecting module in a second scan that is performed before the first scan. 1. A signal selecting device , comprising:a transceiver for repeatedly transceiving electromagnetic waves;a target candidate detecting module for detecting a plurality of objects based on echo signals received by the transceiver;a phase change amount calculating module for calculating a phase change amount between two echo signals from two positions of which distances from the transceiver are substantially the same but azimuths from the transceiver are different; andan object selecting module for selecting an object among the plurality of objects detected by the target candidate detecting module in a first scan based on a phase change amount for the object, the object being the same object as an object selected by the object selecting module in a second scan that is performed before the first scan.2. The device of claim 1 , wherein the object selecting module selects the same object as the object selected in the second scan based on a correlation value of a phase change amount of each object detected in the first scan with a phase change amount of the object selected in the second scan.3. The device of claim 1 ...

Method for determining object sensor misalignment

A vehicle system and method that can determine object sensor misalignment while a host vehicle is being driven, and can do so without requiring multiple sensors with overlapping fields-of-view. In an exemplary embodiment where the host vehicle is traveling in generally a straight line, the present method uses an object sensor to track the path of a stationary object as it moves through the sensor's field-of-view and compares the sensed object path to an expected object path. If the sensed and expected paths of the stationary object deviate by more than some amount, then the method determines that the object sensor is skewed or otherwise misaligned.

Threaded Track Method, System, and Computer Program Product

A system, method, and computer program product for determining a trajectory of an item includes segmenting surveillance point data of sensors, by sensor, into track segments for the item, associating the track segments for the item in a segment group for the item, and fusing the track segments in the segment group for the item into a synthetic threaded track for the item. The fusing may include filtering of the track segments for the item across track segments. The filtering across track segments may be based on a weighting of the point track data of the track segments for the item. A system for determining a trajectory of an item may include a processing device configured to execute a threaded track process to convert a data set of surveillance point data into a synthetic threaded track for the item.

Radar device and method of processing signal

A radar device according to an embodiment includes a transmission unit, a reception unit, a processing unit, a first determination unit, and a second determination unit. The transmission unit emits transmission signals. The reception unit receives reception signals acquired by reflecting the transmission signals on an object. The processing unit detects object data corresponding to the object from the reception signals. The first determination unit determines object data included in a predicted range based on past object data detected in the past as past correspondence data having time continuity with respect to the past object data. In a case where parameters of new data that has not been detected in the past and the past correspondence data have predetermined relation, the second determination unit determines that the new data and the past correspondence data correspond to the same object.

Integrated and Configurable Radar System

An integrated radar system includes a processing module and a radar device. The radar device includes an antenna module, a configurable shaping module, and a configurable transceiver module. The processing module generates an outbound signal and a control signal to configure the integrated radar system. The configured transceiver module converts the outbound signal into an outbound wireless signal. The configured shaping module shapes the outbound wireless signal into a shaped signal. The antenna module transmits the shaped signal and then receives an inbound radar signal. The configured shaping module shapes the inbound radar signal into an inbound wireless signal. The configured transceiver module converts the inbound wireless signal into an inbound symbol stream. The processing module determines location information regarding an object based on the inbound symbol stream.

Methods for Detecting the Flight Path of Projectiles

Methods for detecting the flight path of projectiles involve a sequence of N target detections that include detecting the measured velocities and azimuthal angle bearings of the projectile along the flight path of the projectile by Doppler radar at the times tn, wherein n=1 . . . N, and determining the flight path and the direction of motion of the projectile are from these measurements. The measurements are adapted in a first nonlinear parameter fit to an analytical relationship of the time curve of the radial velocity of the projectile while the projectile passes through the detection range of the radar and so that the absolute projectile velocity, minimum distance of the project flight path from the radar, time at which the projectile passes the point having the minimum distance, flight path direction in azimuth, and flight path direction in elevation can be estimated. 112-. (canceled)13. A method for the detection of the trajectory of projectiles , comprising:{'sub': n', 'rad', 'n', 'n, 'recording, by a Doppler radar, a series of N target detections at points in time twith n=1 . . . N with measured speeds v(t) and azimuthal angle bearings α(t) of the projectile along the trajectory of the projectile;'}{'sub': rad', 'n', 'n, 'determining a trajectory and direction of motion of the projectile based on the measured speeds υ(t) and azimuthal angle bearings α(t) of the projectile along the trajectory of the projectile;'}{'sub': 0', 'd', 'rad', 'n', 'rad, 'estimating absolute projectile speed υ, minimum distance of projectile trajectory from the radar d, and estimated point in time tat which the projectile passes a point at a minimum distance d by adapting the speed measurements υ(t) in a first non-linear parameter fit to an analytical relationship of a time profile of the measured radial speed υ(t) of the projectile when passing through the detection region of the radar;'}{'sub': 0', 'n, 'estimating a trajectory direction in azimuth αby adapting, in a second non- ...

Radar apparatus, vehicle control system, and signal processing method

There is provided a radar apparatus. A setting unit is configured to set a first range including at least a reference target. A deriving unit is configured to derive a representative position of targets included in the first range on the basis of position information of the targets included in the first range. An acquiring unit is configured to acquire vehicle information indicating that the vehicle is running in a curve-shaped lane or a road shape in front of the vehicle is a curve shape. When the acquiring unit acquires the vehicle information, the setting unit sets a second range wider than the first range and the deriving unit derives a representative position of targets included in the second range on the basis of position information of the targets included in the second range.

WIRELESS IN-SHOE PHYSICAL ACTIVITY MONITORING

A method includes obtaining foot force data that is created by sampling, in accordance with a sampling signal, data from a plurality of pressure sensing elements of a shoe sensor system, where the plurality of pressure sensing elements are distributed in a pattern having a first pressure sensing element at a fifth metatarsal area of a lateral wall of an insole of a shoe associated with the shoe sensor system, and a second pressure sensing element at a first metatarsal area of a medial wall of the insole. The method further includes processing the foot force data to determine a horizontal force of a foot of a user of the shoe sensor system while the user is performing a movement while wearing the shoe. 1. A method for execution by a processing module , the method comprises:obtaining foot force data that is created by sampling, in accordance with a sampling signal, data from a plurality of pressure sensing elements of a shoe sensor system, wherein the plurality of pressure sensing elements are distributed in a pattern having a first pressure sensing element at a fifth metatarsal area of a lateral wall of an insole of a shoe associated with the shoe sensor system, and a second pressure sensing element at a first metatarsal area of a medial wall of the insole; andprocessing the foot force data to determine a horizontal force of a foot of a user of the shoe sensor system while the user is performing a movement while wearing the shoe.2. The method of further comprises:obtaining three-dimensional foot data that is created by sampling, in accordance with the sampling signal, data from a first accelerometer of the shoe sensor system, wherein the first accelerometer is positioned within the pattern;correlating the foot force data and the three-dimensional foot data in accordance with the sampling signal to produce correlated foot data; andprocessing the correlated foot data to determine one or more of: distance traveled during a time period, stride length data, fatigue ...

RADAR APPARATUS AND SIGNAL PROCESSING METHOD

A radar apparatus includes: a derivation portion that derives an instantaneous value of a target; a tracking portion that tracks a single target based on a derivation result of the derivation portion; a lost process portion that performs a lost process to stop the single target from being tracked by the tracking portion; and a target classification portion that classifies the single target into a standstill target or a moving target; and, when the single target is the standstill target, the lost process portion suppresses generation of the lost process more greatly than when the single target is the moving target. 1. A radar apparatus comprising:a derivation portion that derives an instantaneous value of a target;a tracking portion that tracks a single target based on a derivation result of the derivation portion;a lost process portion that performs a lost process to stop the single target from being tracked by the tracking portion; anda target classification portion that classifies the single target into a standstill target or a moving target; wherein:when the single target is the standstill target, the lost process portion suppresses generation of the lost process more greatly than when the single target is the moving target.2. The radar apparatus according to claim 1 , wherein:when the single target is the standstill target and a tracking position of the single target falls out of a detection region of the radar apparatus, the lost process portion prohibits generation of the lost process.3. The radar apparatus according to claim 2 , wherein:the radar apparatus is mounted on a mobile object together with other radar apparatus; andeven when the single target is the standstill target and the tracking position of the single target falls out of the detection region of the radar apparatus, the lost process portion exceptionally does not prohibit generation of the lost process if the tracking position of the single target falls into a detection region of the other radar ...

MULTI-USER INTELLIGENT ASSISTANCE

An intelligent assistant records speech spoken by a first user and determines a self-selection score for the first user. The intelligent assistant sends the self-selection score to another intelligent assistant, and receives a remote-selection score for the first user from the other intelligent assistant. The intelligent assistant compares the self-selection score to the remote-selection score. If the self-selection score is greater than the remote-selection score, the intelligent assistant responds to the first user and blocks subsequent responses to all other users until a disengagement metric of the first user exceeds a blocking threshold. If the self-selection score is less than the remote-selection score, the intelligent assistant does not respond to the first user. 1. An intelligent assistant computer , comprising:a logic machine; anda storage machine holding instructions executable by the logic machine to:recognize another intelligent assistant computer;record speech spoken by a first user;determine a self-selection score for the first user based on the speech spoken by the first user;receive a remote-selection score for the first user from the other intelligent assistant computer;if the self-selection score is greater than the remote-selection score, respond to the first user, determine a disengagement metric of the first user based on recorded speech spoken by the first user, and block subsequent responses to all other users until the disengagement metric of the first user exceeds a blocking threshold;if the self-selection score is less than the remote-selection score, do not respond to the first user; andstop blocking subsequent responses to another user responsive to a new self-selection score for the first user being less than a new remote-selection score for the first user.2. The intelligent assistant computer of claim 1 , wherein the self-selection score is determined based further on a signal-to-noise ratio of recorded speech spoken by the first user. ...

BEAM MANAGEMENT FOR BISTATIC AIR INTERFACE BASED RADIO FREQUENCY SENSING IN MILLIMETER WAVE SYSTEMS

Techniques are provided for managing transmit and receive beams in a millimeter wave (mmW) communication system for use in bistatic radio frequency (RF) sensing. An example method of tracking targets with bistatic radio frequency sensing includes receiving one or more sensing reference signals, generating a signal report based at least in part on the one or more sensing reference signals, transmitting the signal report, receiving tracking signal configuration information, receiving one or more tracking reference signals identified in the tracking signal configuration information, and tracking one or more targets associated with the one or more tracking reference signals. 1. A method of tracking targets with a user equipment using bistatic radio frequency sensing , comprising:receiving one or more sensing reference signals;generating a signal report based at least in part on the one or more sensing reference signals;transmitting the signal report;receiving tracking signal configuration information;receiving one or more tracking reference signals identified in the tracking signal configuration information; andtracking one or more targets associated with the one or more tracking reference signals.2. The method of wherein receiving the one or more sensing reference signals includes receiving the one or more sensing reference signals on one or more receive beams.3. The method of wherein the signal report includes an indication of a receive beam associated with at least one of the one or more sensing reference signals.4. The method of further comprising:determining a measurement value for each of the one or more sensing reference signals;comparing the measurement value to a threshold value; andgenerating the signal report based on the one or more sensing reference signals with measurement values that are greater than the threshold value.5. The method of wherein the measurement value is at least one of a reference signal received power (RSRP) claim 4 , a reference signal ...

PRODUCING DATA DESCRIBING TARGET MEASUREMENTS

Methods and systems for producing data describing target measurements using a processor () in a system () having at least one on-board sensor () on a vehicle. The method includes obtaining data from an on-board sensor (), obtaining data from a sensor () off-board the vehicle, activation approximating () a target alignment error between the on-board and off-board sensor data, receiving target alignment error data in respect of at least one other sensor set comprising at least two sensors, estimating () a bias using the received target alignment error data and correcting the approximated target alignment error using the bias, and performing () a data fusion process on the obtained off-board sensor data and the obtained on-board sensor data using the approximated target alignment error to produce target measurement data. 1. A method of producing on a vehicle data describing target measurements of one or more target positions using a processor in a system having at least one sensor on-board the vehicle , the method including:obtaining first on-board sensor data representative of a target from said on-board sensor;obtaining from a sensor of an off-board vehicle co-operator first off-board sensor data representative of said target;approximating a target alignment error between said first on-board sensor data representative of said target and said first off-board sensor data representative of said target;subsequently obtaining second on-board sensor data representative of said target from said on-board sensor and obtaining second off-board sensor data representative of said target from said off-board sensor;receiving alignment error data derived from said second on-board and off-board sensor data;estimating a bias using said received alignment error data and correcting said approximated target alignment error using said bias; andperforming a data fusion process on the obtained first off-board sensor data and the obtained first on-board sensor data using said corrected ...

TRAILER ESTIMATION WITH ELEVATION ENHANCED SENSING

A trailer-detection system includes a radar-sensor and a controller. The radar-sensor is used to determine a range, an azimuth-angle, and an elevation-angle of a radar-signal reflected by a trailer towed by a host-vehicle. The controller is in communication with the radar-sensor. The controller is configured to determine a size of the trailer towed by the host-vehicle based on the range, the azimuth-angle, and the elevation-angle of the radar-signal. 1. A trailer-detection system configured to determine a size of a trailer towed by a host-vehicle , said system comprising:a radar-sensor used to determine a range, an azimuth-angle, and an elevation-angle of a radar-signal reflected by a trailer towed by a host-vehicle; anda controller in communication with the radar-sensor, said controller configured to determine a size of the trailer towed by the host-vehicle based on the range, the azimuth-angle, and the elevation-angle of the radar-signal.2. The system in accordance with claim 1 , wherein the controller is further configured to determine a trailer-type based on the radar-signal.3. The system in accordance with claim 1 , wherein the controller is further configured to determine a trailer-height based on the radar-signal.4. The system in accordance with claim 1 , wherein the controller is further configured to determine a trailer-length based on the radar-signal.5. The system in accordance with claim 1 , wherein the controller is further configured to determine a trailer-width based on the radar-signal.6. The system in accordance with claim 1 , wherein the controller is further configured to determine a trailer-type claim 1 , a trailer-height claim 1 , a trailer-length claim 1 , and a trailer-width based on the radar-signal. This disclosure generally relates to a vehicle radar-system, and more particularly relates to a system that detects a trailer-presence and determines a trailer-size and a trailer-type.It is known to equip a host-vehicle with a radar system for ...

Device, System, and Method for Tracking Multiple Projectiles

A system for tracking multiple projectiles includes a first radar device aimed so that a field of view of the first radar device covers at least a portion of a target area into which projectiles are to be launched from a plurality of launch locations and a processor receiving data from the radar and identifying from the data tracks of a plurality of projectiles. The processor determines for each projectile track identified a specific one of the launch locations from which the projectile was launched and provides to the launch location associated with each projectile data corresponding to a trajectory of the projectile. 1. A system for tracking multiple projectiles , comprising:a first radar device aimed so that a first field of view of the first radar device covers at least a portion of a target volume into which projectiles are to be launched from a plurality of launch locations; anda processor receiving data from the radar and identifying from the data tracks of a plurality of projectiles, the processor determining for each projectile track identified a launch location from which the projectile was launched and providing to a device associated with the launch location data corresponding to a trajectory of the projectile.2. The system of claim 1 , further comprising a second radar device aimed so that a second field of view of the second radar device covers at least a portion of the target volume including a portion of the target volume outside the first field of view as well as an overlap portion of the target volume also included in the first field of view.3. The system of claim 1 , wherein the device associated with each location includes a screen displaying the data.4. The system of claim 1 , wherein claim 1 , for each of a plurality of time frames claim 1 , the processor receives from the first radar device a radar signal and calculates from this radar signal projectile data including position and speed values for each projectile identified.5. The system of ...

GOLF BALL TRACKING SYSTEM

The invention discloses a golf ball tracking system, which includes a distributed sensor and processor system adapted to simultaneously track the trajectories of multiple golf balls hit by one of more golfers. The system is adapted to keep track of the location of the golfers to enable the allocation of shots to the correct golfer. The system is operated at a golf driving range, where multiple players can hit balls from anywhere within a designated area and/or fixed hitting bay locations. Multilateration is used to determine the location of multiple targets in 3D space, based on the reported range and Doppler from distributed radar sensors. 1. A golf ball tracking system comprising a single distributed radar sensor system including a plurality of radar sensors distributed over a coverage area and a remotely accessible central processor in communication with the radar sensors , including:a receiving component for receiving sensor data from the plurality of sensors;a sensor-level tracking component for simultaneously determining at least the relative speeds and distances between the sensors and multiple golf balls moving through the coverage area;a system-level 3D tracking component for simultaneously determining the locations of the multiple golf balls moving through the coverage area based on information determined by the sensor-level tracking component;a trajectory determining component for constructing complete trajectories for each of the multiple golf balls in flight and determining their geographical origins and landing locations based on information determined by the system-level 3D tracking component; andan assigning component for assigning each of the multiple golf balls to one or more golfers based on known geographical positions of the golfers and the geographical origins of the multiple golf ball trajectories.2. A system as claimed in claim 1 , which includes a golfer positioning component for determining the geographical positions of the one or more ...

TARGET DETECTION AND TRACKING FOR FEATURE EXTRACTION

Methods and electronic devices for target detection and tracking operations are provided. A method of operating an electronic device includes identifying, based on signals received through a radar transceiver of the electronic device, a peak of the received signals in a current time slot, determining whether the peak in the current time slot corresponds to a tracked target based on comparing a location of the peak in the current time slot with a location of a peak corresponding to the tracked target in a previous time slot as a function of a movement speed threshold, and in response to a determination that the peak in the current time slot corresponds to the tracked target, updating tracking information for the tracked target associated with the peak in the current time slot. 1. An electronic device , the electronic device comprising:a radar transceiver; and identify, based on signals received through the radar transceiver, a peak of the received signals in a current time slot,', 'determine whether the peak in the current time slot corresponds to a tracked target based on comparing a location of the peak in the current time slot with a location of a peak corresponding to the tracked target in a previous time slot as a function of a movement speed threshold, and', 'in response to a determination that the peak in the current time slot corresponds to the tracked target, update tracking information for the tracked target associated with the peak in the current time slot., 'a processor operably connected to the radar transceiver, the processor configured to2. The electronic device of claim 1 , wherein the processor is further configured to:obtain, based on a range of a tap, the received signals to detect the tracked target;compute, based on the received signals, a range Doppler map including a two-dimensional (2D) map comprising a distance and a speed associated with the tap; andnull, based on the computed range Doppler map, low Doppler bins as a function of a ...

METHOD AND A SYSTEM FOR LOCALIZATION AND MONITORING OF LIVING BEING TARGETS

A method for localization and monitoring of living being targets in an environment comprise: transmitting () a sequence of radio frequency waveforms, the waveforms being a continuous-wave waveform modulated in frequency and/or phase; detecting () a sequence of reflected waveforms being reflected by a target and Doppler-shifted due to a movement of the target, forming () a sequence of waveform transforms, wherein the waveform transform comprises discretized information in a plurality of range bins, and wherein the information in a single range bin corresponds to reflections occurring at a specific sector in the environment; analyzing () information for a single specific sector in a sub-sequence of the sequence of waveform transforms, and determining () movement of a target in the specific sector based on the waveform transform information for that specific sector during a time period corresponding to the sub-sequence. 1. A method for localization and monitoring of living being targets in an environment , the method comprising:transmitting a sequence of radio frequency waveforms in the environment from a transmitter, each of said radio frequency waveforms being a continuous-wave waveform modulated in frequency and/or phase;detecting a sequence of reflected waveforms, wherein each reflected waveform comprises a contribution of the transmitted waveform being reflected by a target and Doppler-shifted due to a movement of the target,forming a sequence of waveform transforms, wherein each waveform transform is based on a single waveform in the sequence of reflected waveforms, and wherein the waveform transform comprises discretized information in a plurality of range bins, and wherein the information in a single range bin corresponds to reflections occurring at a specific sector in the environment in relation to the transmitter;analyzing information for a single specific sector in a sub-sequence of the sequence of waveform transforms, anddetermining movement of a target in ...

Customer Presence Detection

In some embodiments, apparatuses and methods are provided herein useful to track customer presence and movement within a shopping facility. More specifically, reflections of non-visible electromagnetic (EM) waves can be analyzed to locate customers within an area and track customer movement over time. Maps of the area can be created at first and second times and compared with one another to determine differences.

INTELLIGENT ASSISTANT

Examples are disclosed herein that relate to entity tracking. One examples provides a computing device comprising a logic processor and a storage device holding instructions executable by the logic processor to receive image data of an environment including a person, process the image data using a face detection algorithm to produce a first face detection output at a first frequency, determine an identity of the person based on the first face detection output, and process the image data using another algorithm that uses less computational resources of the computing device than the face detection algorithm. The instructions are further executable to track the person within the environment based on the tracking output, and perform one or more of updating the other algorithm using a second face detection output, and updating the face detection algorithm using the tracking output. 1. A computing device , comprising:a logic processor; and receive image data of an environment including a person;', 'process the image data using a face detection algorithm to produce a first face detection output at a first frequency;', 'select at least one tracking algorithm that uses less computational resources of the computing device than the face detection algorithm, and produces a tracking output at a second frequency greater than the first frequency;', 'process the image data using the at least one tracking algorithm; and', 'track the person within the environment based on the tracking output produced by the at least one tracking algorithm., 'a storage device holding instructions executable by the logic processor to2. The computing device of claim 1 , wherein the instructions are executable to select the at least one tracking algorithm based on available computing resources of the computing device.3. The computing device of claim 1 , wherein the instructions are executable to select the at least one tracking algorithm based on a battery life condition associated with the computing ...

SUBORBITAL SPACE TRAFFIC CONTROL SYSTEM WITH RADAR SYSTEM AND ADS-B RECEIVER

The invention concerns a suborbital space traffic control system that comprises: a radar system configured to monitor a predetermined suborbital region and detect and track objects in the predetermined suborbital region. The objects include vehicles and space debris; and a suborbital space traffic monitoring system configured to: receive, from the radar system, tracking data related to the objects detected and tracked by the radar system; monitor, on the basis of the tracking data, trajectories of the objects in the predetermined suborbital region using one or more predetermined machine-learning techniques to detect potentially hazardous situations for the vehicles in the predetermined suborbital region; and, if it detects a potentially hazardous situation for one or more given vehicles, transmit corresponding alarm messages to the given vehicle(s). 1. A suborbital space traffic control system , comprising: ["monitor a predetermined suborbital region comprised between a first predetermined altitude of 20/22 km and a second predetermined altitude of 120/150 km from earth's surface, and", 'detect and track vehicles and space debris in said predetermined suborbital region;, 'a radar system configured to'}a suborbital space traffic monitoring system; and 'ground-air and air-ground communications with the vehicles in the predetermined suborbital region, and', 'a communications infrastructure configured to allow the suborbital space traffic monitoring system to carry out'}ground-ground communications with other ground systems; wherein the radar system includes:a primary radar sensor equipped with an electronically scanned array antenna;an ADS-B receiver based on Automatic Dependent Surveillance—Broadcast technology; and detect and track the vehicles and the space debris in the predetermined suborbital region on the basis of the data received from said primary radar sensor and from said ADS-B receiver,', 'generate tracking data related to said detected and tracked vehicles ...

MULTI-OBJECT TRACKING METHOD AND SYSTEM

A multi-object tracking method includes generating multi-dimensional physical characterization data associated with a plurality of objects; simplifying the multi-dimensional physical characterization data to reduce at least one dimension thereof, thereby resulting in a simplified data set; and tracking by comparing a current simplified data set and a stored data set in a database. If the current simplified data set conforms to the stored data set in the database, a proper operation is correspondingly performed; otherwise the current simplified data set is defined as a new event and stored in the database. 1. A multi-object tracking method , comprising:(a) generating multi-dimensional physical characterization data associated with a plurality of objects;(b) simplifying the multi-dimensional physical characterization data to reduce at least one dimension thereof, thereby resulting in a simplified data set; and(c) tracking by comparing a current simplified data set and a stored data set in a database;wherein if the current simplified data set conforms to the stored data set in the database, a proper operation is correspondingly performed; otherwise the current simplified data set is defined as a new event and stored in the database.2. The method of claim 1 , wherein the step (a) comprises:generating and transmitting radio-frequency (RF) transmitting signals to the objects contained in a robot;receiving RF receiving signals reflected from the objects; andextracting the multi-dimensional physical characterization data of the objects at different times according to the RF transmitting signals and the RF receiving signals.3. The method of claim 2 , wherein the RF transmitting signals comprise frequency-modulated continuous-wave (FM-CW) radio signals.4. The method of claim 2 , wherein the extracted multi-dimensional physical characterization data comprises strength claim 2 , frequency claim 2 , position and speed.5. The method of claim 1 , wherein the step (a) comprises: ...

MULTI SATELLITE DETECTION AND TRACKING OF MOVING OBJECTS

A computer implemented method of tracking a travelling vessel, comprising obtaining a list of plurality of satellites capable of detecting the vessel at location(s) along predicted path(s) of the vessel. For each of the location(s) the following is performed: 1. A computer implemented method of tracking a travelling vessel , comprising: predicting a plurality of possible future locations of said vessel according to a plurality of estimated movement vectors derived from a movement graph of said vessel generated based on at least one historical movement path, a recent movement path and a current location of said vessel;', 'estimating a plurality of observation windows of said plurality of satellites to identify a plurality of candidate observation windows in which at least one of said plurality of satellites has a visual coverage of said each possible future location;', 'calculating a detection probability score for each of said plurality of candidate observation windows according to a location probability score assigned to each of said plurality of possible future locations and a view probability score assigned to each of said plurality of candidate observation windows;', 'selecting a preferred one of said plurality of candidate observation windows presenting a highest said detection probability score; and', 'repeating said predicting, said estimating, said calculating and said selecting in case said vessel is not detected during said preferred candidate observation window., 'obtaining a list of plurality of satellites capable of detecting a travelling vessel using predicted paths of said vessel and identifying at least one of said plurality of satellites capable of detecting said vessel in at least one of a plurality of locations along said predicted paths, for said at least one location the following is performed2. The computer implemented method of claim 1 , wherein at least some of said plurality of satellites are low earth orbiting satellites having a radial ...

RADAR AND CAMERA-BASED DATA FUSION

A method including detecting an object within a field of view of a radar using a radar signal; tracking movement of the object through the field of view of the radar; triggering a camera to capture a plurality of images of the object based on the movement of the object; detecting the object in the plurality of images; combining data of the radar signal with data of the camera to estimate a position of the object; identifying a radar signal track generated by the motion of the object based on the combined data; and estimating a trajectory of the object based on identifying the radar signal track. 1. A method , comprising:detecting an object within a field of view of a radar using a radar signal;tracking movement of the object through the field of view of the radar;triggering a camera to capture a plurality of images of the object based on the movement of the object;detecting the object in the plurality of images;combining data of the radar signal with data of the camera to estimate a position of the object;identifying a radar signal track generated by the motion of the object based on the combined data;estimating a trajectory of the object based on identifying the radar signal track.2. The method of claim 1 , wherein triggering the camera further comprises:determining a pre-determined amount of time has passed since an onset of tracking the movement of the object; andtriggering the camera to capture the plurality of images based on a passage of the pre-determined amount of time.3. The method of claim 1 , wherein triggering the camera further comprises:determining an amplitude of a radar signal associated with tracking the movement of the object; andtriggering the camera to capture the plurality of images based on determining the amplitude of the radar signal.4. The method of claim 1 , wherein triggering the camera further comprises:determining a pattern of a radar signal associated with tracking the motion of the object;matching the pattern of the radar signal to a ...

Methods and systems for object detection

A computer implemented method for object detection includes: determining a grid, the grid comprising a plurality of grid cells; determining, for a plurality of time steps, for each grid cell, a plurality of respective radar detection data, each radar detection data indicating a plurality of radar properties; determining, for each time step, a respective radar map indicating a pre-determined radar map property in each grid cell; converting the respective radar detection data of the plurality of grid cells for the plurality of time steps to a point representation of pre-determined first dimensions; converting the radar maps for the plurality of time steps to a map representation of pre-determined second dimensions, wherein the pre-determined first dimensions and the pre-determined second dimensions are at least partially identical; concatenating the point representation and the map representation to obtain concatenated data; and carrying out object detection based on the concatenated data.

Autonomous Robotic Mobile Threat Security System

A system for providing autonomous robotic mobile threat security is disclosed. The system may perform an operation that includes receiving sensor information associated with an environment surrounding an object, such as a maritime vessel, where the sensor information is associated with a contact. The system may transform the contact information into track data corresponding to a track associated with the contact. Additionally, the system may compute, based on the track data, a confidence level for the track. The confidence level can indicate a representation of the degree to which a threatening behavior is exhibited by the contact as indicated by the track. The system may then determine if the confidence level for the track is at least as great as a threshold confidence level. If the confidence level is determined to be at least as great as the threshold confidence level, the system may classify the track as a threat. Finally, the system may employ a countermeasure against the threat. 1. A system for providing autonomous robotic mobile threat security , the system comprising:a memory that stores instructions; receiving sensor information associated with an environment surrounding an object, wherein the sensor information is associated with a contact;', 'transforming the contact information into track data corresponding to a track associated with the contact;', 'computing, based on the track data, a confidence level for the track, wherein the confidence level indicates a representation of the degree to which a threatening behavior is exhibited by the contact as indicated by the track;', 'determining if the confidence level for the track is at least as great as a threshold confidence level;', 'classifying the track as a threat if the confidence level is determined to be at least as great as the threshold confidence level; and', 'employing a countermeasures against the threat., 'a processor that executes the instructions to perform operations, the operations ...

Technique for lane assignment in a vehicle

A technique for assigning lanes on a road to objects moving in a vicinity of a vehicle on the road is proposed. A method embodiment of the invention comprises the steps of providing trajectories, wherein the or each trajectory represents a time sequence of positions of a moving object; selecting first and second objects and determining a distance between a current position of the first object and the trajectory of the second object; comparing the distance with a predefined threshold; and providing, based on a result of the comparison, a lane assignment indicating a lane to which the second object is assigned.

RADAR APPARATUS AND RADAR SIGNAL PROCESSING METHOD

A radar apparatus and a radar signal processing method are provided. The radar apparatus includes a plurality of transmitting antennas, a plurality of non-uniformly and linearly deployed receiving antennas, a sensor signal processor configured to calculate target range-Doppler data from signals input from a receiving antenna arrangement according to virtual antennas while sequentially driving the plurality of transmitting antennas, and a target position calculator configured to calculate position data of a target from arrangement mapped data obtained by rearranging the virtual antenna-specific range-Doppler data output from the sensor signal processor with reference to antenna configuration related information. 1. A radar apparatus comprising:a memory configured to store antenna configuration related information of an antenna arrangement including a plurality of transmitting antennas and a plurality of receiving antennas, at least one kind of which are non-uniformly and linearly deployed;a sensor signal processor including a range and Doppler processor configured to calculate range-Doppler data from signals input through the plurality of receiving antennas according to virtual antennas while sequentially driving the plurality of transmitting antennas; anda target position calculator configured to calculate position data of a target from arrangement mapped data obtained by rearranging the virtual antenna-specific range-Doppler data calculated by the sensor signal processor according to a two-dimensional arrangement of the virtual antennas with reference to the antenna configuration related is information.2. The radar apparatus of claim 1 , wherein the sensor signal processor further includes a target selector configured to select and output antenna-specific range-Doppler data of one or more targets which are highly likely to be the target from the calculated virtual antenna-specific range-Doppler data.3. The radar apparatus of claim 2 , wherein the target position ...

SKID AND ROLL TRACKING SYSTEM

A system for tracking an object includes a first tracking device aimed so that a first field of view of the first tracking device covers at least a portion of a target volume into which an object is to be launched from a launch location and a processor receiving data from the tracking device and identifying from the data the velocity of the object over time, the processor identifying, based on changes in the velocity of the object over time, a first portion of a path of the object during which the object was in one of a bouncing state and a sliding state. 120-. (canceled)21. A system , comprising:a tracking device aimed so that a first field of view of the tracking device covers at least a portion of a target volume into which an object is to be launched from a launch location; anda processor receiving data from the tracking device and identifying from the data a velocity of the object over time, the processor determining, based on changes in the velocity, whether the object was in a bouncing state, a sliding state or a rolling state at a given time.22. The system of claim 21 , wherein the processor calculates a velocity curve of the object over time claim 21 , divides the velocity curve into segments and determines for each segment whether the object is in the bouncing state claim 21 , the sliding state claim 21 , or the rolling state.23. The system of claim 22 , wherein the segments are bounded by transition points and a transition point is identified as a point at which a change in one of the velocity of the object and an acceleration of the object is greater than a set threshold.24. The system of claim 23 , wherein each of the segments is determined to be in the bouncing state claim 23 , the sliding state claim 23 , or the rolling state based in part on a determined slope of the segment.25. The system of claim 21 , wherein the tracking device captures data from a signal reflected off the object.26. The system of claim 25 , wherein the tracking device does not ...

SYSTEMS TO TRACK A MOVING SPORTS OBJECT

Systems, methods and computer-readable media are provided for tracking a moving sports object. In one example, a method of tracking a moving sports object includes calibrating a perspective of an image of a camera to a perspective of a Doppler radar for simultaneous tracking of the moving sports object, and tracking the moving sports object simultaneously with the camera and Doppler radar. The method may further comprise removing offsets or minimizing differences between simultaneous camera measurements and Doppler radar measurements of the moving sports object. The method may also include combining a camera measurement of an angular position of the moving sports object with a simultaneous Doppler measurement of a radial distance, speed or other measurement of the moving sports object. 1. A method of tracking a moving sports object , the method including:arranging two sensors to track the moving sports object simultaneously, wherein one sensor is a Doppler radar and the other sensor is a camera:calibrating a perspective of an image of the camera to a perspective of the Doppler radar for simultaneous tracking of the moving sports object;tracking the moving sports object simultaneously with the camera and Doppler radar; andinterpolating a three-dimensional trajectory of the moving sports object's motion based at least in part on a failure to receive usable measurements from either the camera or the radar during a period that the moving sports object is being tracked.2. The method according to claim 1 , further comprising:Removing offsets or minimizing differences between simultaneous camera measurements and Doppler radar measurements of the moving sports object3. The method according to claim 1 , further comprising:combining a camera measurement of an angular position of the moving sports object with a simultaneous Doppler measurement of a radial distance, speed or other measurement of the moving sports object.4. The method according to claim 3 , further comprising: ...

RADAR APPARATUS

A radar apparatus detects objects in a vicinity of a host vehicle on which the radar apparatus is mounted. The radar apparatus includes a microcomputer configured to operate as a prediction processor that calculates a prediction position of a previously detected target in a current detection cycle and an extrapolation processor that executes an extrapolation to determine that a same target as the previously detected target exists in the prediction position for the current detection cycle. The extrapolation processor executes the extrapolation when the prediction position is outside a detection range of the radar apparatus and a speed of the host vehicle is lower than a predetermined value. 1. A radar apparatus that detects objects in a vicinity of a host vehicle on which the radar apparatus is mounted , the radar apparatus comprising a microcomputer configured to operate as:a prediction processor that calculates a prediction position of a previously detected target in a current detection cycle; andan extrapolation processor that executes an extrapolation to determine that a same target as the previously detected target exists in the prediction position for the current detection cycle, whereinthe extrapolation processor executes the extrapolation when the prediction position is outside a detection range of the radar apparatus and a speed of the host vehicle is lower than a predetermined value.2. The radar apparatus according to claim 1 , whereineven when the prediction position is outside the detection range of the radar apparatus, when the host vehicle is not being parked, the extrapolation processor does not execute the extrapolation.3. The radar apparatus according to claim 1 , whereineven when the prediction position is within the detection range of the radar apparatus, when the prediction position is within a predetermined range near a border between an inside of the detection range of the radar apparatus and an outside of the detection range of the radar ...

Multi-target tracking method and tracking system applicable to clutter environment

A multi-target tracking method applicable to a cluttered environment includes a prediction step, a classification step, an updating step, a pruning and extracting step, a generation step, a supplement step and a combining step. A multi-target tracking system applicable to a cluttered environment is also provided. The present invention has the characteristic of a fast processing speed, and at the same time, effectively solves the problem that the existing method fails to provide state estimation for a new target in the initial few moments after the new target appears.

SYSTEMS, METHODS, APPARATUSES, AND DEVICES FOR RADAR-BASED IDENTIFYING, TRACKING, AND MANAGING OF UNMANNED AERIAL VEHICLES

Systems, methods, and apparatus for identifying and tracking UAVs including a plurality of sensors operatively connected over a network to a configuration of software and/or hardware. Generally, the plurality of sensors monitors a particular environment and transmits the sensor data to the configuration of software and/or hardware. The data from each individual sensor can be directed towards a process configured to best determine if a UAV is present or approaching the monitored environment. Radar sensors included in the plurality of sensors may identify specific locations corresponding to objects in an airspace, and video sensors such as PTZ cameras may be directed to collect image data of the objects at the specific locations for identifying the objects as UAVs and tracking the UAVs. The system predicts next locations for the UAVs and directs the PTZ cameras to update their orientations for following the UAVs. 1. A system for identifying unmanned aerial vehicles (UAVs) in a particular airspace , comprising:a radar sensor configured to monitor the particular airspace;a plurality of image capturing devices physically proximate to the radar sensor and configured to monitor the particular airspace; and receive signal readings from the radar sensor, wherein the signal readings comprise location data corresponding to one or more objects detected in the particular airspace via the radar sensor;', 'compare the received signal readings to a plurality of historical readings, wherein the plurality of historical readings correspond to known object trajectories detected within the particular airspace, and wherein each of the plurality of historical readings comprises a predicted location of an object and an acceptable location uncertainty corresponding to a subsequent object location; and', 'upon determining that a particular reading of the received signal readings comprises location data substantially similar to the predicted location of a matching historical reading and is ...

Voxel Based Ground Plane Estimation and Object Segmentation

Systems, methods, and apparatuses described herein are directed to performing segmentation on voxels representing three-dimensional data to identify static and dynamic objects. LIDAR data may be captured by a perception system for an autonomous vehicle and represented in a voxel space. Operations may include determining a drivable surface by parsing individual voxels to determine an orientation of a surface normal of a planar approximation of the voxelized data relative to a reference direction. Clustering techniques can be used to grow a ground plane including a plurality of locally flat voxels. Ground plane data can be set aside from the voxel space, and the remaining voxels can be clustered to determine objects. Voxel data can be analyzed over time to determine dynamic objects. Segmentation information associated with ground voxels, static object, and dynamic objects can be provided to a tracker and/or planner in conjunction with operating the autonomous vehicle.

Radar system and associated apparatus and methods

A multi-static radar system provides surveillance. The radar system includes a plurality of radar receivers and a plurality of radar transmitters arranged in a multi-static configuration to form at least one radar cell to provide an area of radar coverage within the cell.

TARGET TRACKING CAMERA

A target tracking device transmits a radio frequency beam towards a scene, detects backscatter comprising at least a portion of the RF beam reflected from a reflecting object at the scene, and performs operations that include determining whether the reflecting object is a tracking target, determining a position of the tracking target, and generating tracking information indicative of a position adjustment for maintaining an alignment of the target tracking device and the tracking target. A target tracking method includes transmitting a millimeter wavelength beam in a direction of orientation of a camera, detecting backscatter reflected from a reflecting object, determining whether the reflecting object is a tracking target, and determining a position of the tracking target. If a distance to the tracking target has increased from a prior distance, tracking information indicative of a position adjustment for offsetting the increase in distance may be generated. 1. A target tracking device , comprising:a transmitter configured to transmit a radio frequency beam towards a scene;a receiver configured to detect backscatter comprising at least a portion of the radio frequency beam reflected from a reflecting object; and determining whether the reflecting object is a tracking target;', 'determining a position of the tracking target; and', 'generating tracking information indicative of a position adjustment for maintaining an alignment of the target tracking device and the tracking target., 'a controller configured to perform operations, comprising2. The target tracking device of claim 1 , wherein the transmitter is configured to generate a radio frequency signal and scan the radio frequency signal over a field having a particular width to generate the radio frequency beam.3. The target tracking device of claim 2 , wherein a ratio of a dimension of the tracking target to the wavelength of the radio frequency signal is in the range of approximately 3:1 to approximately 5:1.4. ...

COLLISION DETECTION SYSTEM AND METHOD OF OPERATION

A system for detecting driver vehicle travelling in an unsafe manner comprising a radar system configured to generate a sequence of frames of radar data. A target trajectory system configured to receive the sequence of frames of radar data and to generate target trajectory data for a vehicle. An alarm system configured to receive the target trajectory data and to generate an alarm as a function of the target trajectory data, a probability of collision, a degree of erratic driving or other suitable data. 122-. (canceled)23. A method comprising:generating a sequence of frames of sensor data using a sensor system;receiving the sequence of frames of sensor data at a processor;generating target data from the sequence of frames of sensor data using the processor;generating target trajectory data from the target data using the processor and a probability density function;generating a signal as a function of the target trajectory data.24. The method of further comprising:generating location data for a vehicle using the sensor data; andmodifying the target trajectory data as a function of the location data.25. The method of further comprising:generating road map data; andmodifying the target trajectory data as a function of the road map data.26. The method of further comprising:generating a first audio indicator for a vehicle approaching from a front of a patrol vehicle; andgenerating a second audio indicator for a vehicle approaching from a rear of the patrol vehicle.27. The method of further comprising increasing or decreasing a tone frequency of an audio indicator as a function of a location a vehicle.28. The method of further comprising increasing or decreasing a volume of an audio indicator as a function of a location of a vehicle.29. The method of further comprising changing a cadence of an audio indicator as a function of a location of a vehicle.30. The method of wherein generating the target trajectory data comprises applying a fuzziness factor to the target ...

DRIVING SUPPORT APPARATUS

A driving support apparatus according to the invention estimates the position of a moving body by controlling a position estimation unit when the tracking-target moving body leaves a first area or a second area to enter a blind spot area and detects the position of the moving body by controlling a position detection unit when the moving body leaves the blind spot area to enter the first area or the second area. In this manner, the trajectory of the tracking-target moving body is calculated so that the trajectory of the moving body detected in the first area or the second area and the trajectory of the moving body estimated in the blind spot area are continuous to each other and driving support is executed based on the calculated trajectory of the tracking-target moving body. 1. A driving support apparatus provided on a subject vehicle , the driving support apparatus comprising:{'claim-text': 'calculate a trajectory of a tracking-target moving body, so that a trajectory of the tracking-target moving body detected in at least one of a first area and a second area and a trajectory of the tracking-target moving body estimated in a blind spot area are continuous to each other, by estimating a position of the tracking-target moving body when the tracking-target moving body leaves one of the first area and the second area and enters the blind spot area and by detecting the position of the tracking-target moving body when the tracking-target moving body leaves the blind spot area and enters the other one of the first area and the second area, determine that the tracking-target moving body leaves the second area and enters the blind spot area using a blind spot entrance confirmation area, the blind spot entrance confirmation area being set in advance, being set to have a predetermined range, and being situated on a rear side of the subject vehicle with respect to the blind spot area, and', '#text': 'processing circuitry configured to:'}execute driving support based on the ...

Adjusting weight of intensity in a phd filter based on sensor track id

In one embodiment, a method for tracking multiple objects with a probabilistic hypothesis density filter is provided. The method includes comparing second track IDs corresponding to newly obtained measurements to one or more first track IDs corresponding to a T k+1 predicted intensity having a predicted weight. If all of the one or more first track IDs match any of the second track IDs, the predicted weight is multiplied by a first value. If less than all of the one or more first track IDs match any of the second track IDs, the predicted weight is multiplied by a second value, wherein the second value is greater than the first value. The method then determines whether to prune the T k+1 predicted intensity based on the predicted weight after multiplying with either the first value or the second value.

METHOD AND APPARATUS FOR PROCESSING CFAR OF SENSOR DATA

A method and apparatus for processing a constant false alarm rate (CFAR) of sensor data are disclosed. The method includes determining whether a skip condition for an averaging operation on a current frame of radar data is satisfied based on a data variation level of the current frame, skipping the averaging operation on the current frame and obtaining previous mean data of a previous frame of the radar data, in response to the skip condition being satisfied, generating current mean data by performing the averaging operation on the current frame, in response to the skip condition not being satisfied, and performing a CFAR operation on the current frame based on one of the previous mean data or the current mean data. 1. A radio detection and ranging (radar) signal processing method , comprising:determining whether a skip condition for an averaging operation on a current frame of radar data is satisfied based on a data variation level of the current frame;skipping the averaging operation on the current frame and obtaining previous mean data of a previous frame of the radar data, in response to the skip condition being satisfied;generating current mean data by performing the averaging operation on the current frame, in response to the skip condition not being satisfied; andperforming a constant false alarm rate (CFAR) operation on the current frame based on one of the previous mean data or the current mean data.2. The radar signal processing method of claim 1 , wherein the data variation level is estimated based on at least one of an ego velocity of a vehicle or frames per second (FPS) of a radar sensor.3. The radar signal processing method of claim 1 , wherein the determining of whether the skip condition is satisfied comprises:determining that the skip condition is satisfied, in response to an ego velocity of a vehicle being less than a velocity threshold.4. The radar signal processing method of claim 1 , wherein the determining of whether the skip condition is ...

INTERFEROMETRIC MULTIPLE OBJECT TRACKING RADAR SYSTEM FOR PRECISION TIME SPACE POSITION INFORMATION DATA ACQUISITON

The system and method of radar tracking using orthogonal interferometry for multiple object tracking and more particularly to the use of multiple, coordinated, scanning radar systems and orthogonal interferometry techniques to increase the precision and accuracy of time-space-position information (ISM in military airborne object testing applications. 1. A multiple object radar tracking system , comprisingan orthogonal interferometer having an azimuthal and an elevation positioning system and at least three phased array antennas that transmit and receive pulsed waveforms at the frequency of the array; anda computer system used to control the radar and positioning system.2. The radar tracking system of claim 1 , wherein the radar tracking system is mounted in a fixed site infrastructure such as a building or tower.3. The radar tracking system of claim 1 , wherein the radar tracking system is mounted onto a transporter that moves the radar tracking system to a location of interest. The radar tracking system of claim 1 , wherein the radar tracking system is mounted onto the bed of a truck that moves the radar to a location of interest. The radar tracking system of claim 1 , wherein the radar tracking system is moved aboard a waterborne vessel and used to track from the water.6. The radar tracking system of claim 1 , wherein the radar tracking system operates in S-Band of RF Frequencies.7. The radar tracking system of claim 1 , wherein the radar tracking system operates in C-Band of RF Frequencies.8. The radar tracking system of claim 1 , wherein the radar tracking system operates in X-Band of RF Frequencies.9. The radar tracking system of claim 1 , wherein the radar tracking system operates in Kμ-Band of RF Frequencies. The present disclosure relates to multiple object tracking and more particularly to the use of multiple, coordinated, electronic scanning radar systems and orthogonal interferometry techniques to increase the precision and accuracy of time-space-position ...

Recursive Real Time Positioning System Setup Method for Immediate Convergence of Functional System Setup

A recursive real time positioning system setup method for immediate convergence of functional system setup is disclosed. In one disclosed embodiment, a method for onboarding a set of positioning devices to a positioning system includes issuing a human-perceptible unconnected indicator from a first positioning device in the set of positioning devices. The method also includes detecting a connection using a wireless receiver on the first positioning device. The connection is between the first positioning device and a second positioning device in the set of positioning devices. The method also includes issuing, in direct and automatic response to the detecting of the connection, a human-perceptible connected indicator from the first positioning device. 1. A method , for onboarding a set of positioning devices to a positioning system , comprising:issuing a human-perceptible unconnected indicator from a first positioning device in the set of positioning devices;detecting a connection using a wireless receiver on the first positioning device, wherein the connection is between the first positioning device and a second positioning device in the set of positioning devices; andissuing, in direct and automatic response to the detecting of the connection, a human-perceptible connected indicator from the first positioning device.2. The method of claim 1 , further comprising:determining a position of the first positioning device using: (i) the wireless receiver; and (ii) multi-lateration conducted on a set of signals transmitted by the positioning system.3. The method of claim 1 , wherein:the human-perceptible unconnected indicator is an audible text message; andthe human-perceptible unconnected indicator identifies an unconnected positioning device in the positioning system.4. The method of claim 1 , further comprising:detecting an unconnected state using the wireless receiver on the first positioning device;wherein the unconnected state is one of: (i) a non-line of sight ...

MISALIGNMENT ESTIMATION FOR A VEHICLE RADAR SYSTEM

A vehicle radar system () having a radar detector () arranged to detect at least one stationary object () a plurality of times when a vehicle () moves in relation to it. A plurality of detected positions () are obtained in a local coordinate system (), fixed with respect to the radar detector (). The object () is stationary with respect to a global coordinate system (), fixed with respect to the environment. A position detector () is arranged to detect its present movement conditions with reference to the global coordinate system (). Correction factors are applied on each detected position of the object in the local coordinate system (). Obtained corrected detected positions are then transformed into the global coordinate system () and an error/cost value is calculated for each correction factor. The correction factor that results in the smallest error/cost value is chosen. 1. A vehicle radar system arranged to detect at least a stationary object outside a vehicle , the radar system comprising , a radar detector and a processing unit , the radar detector being arranged to detect the stationary object a plurality of times when moving in relation to the stationary object such that a plurality of detected positions is obtained in a local coordinate system that is fixed with respect to the radar detector , where the stationary object is stationary with respect to a global coordinate system that is fixed with respect to the environment outside the vehicle , the radar system further comprises a position detector that is arranged to detect a present movement conditions with reference to the global coordinate system , where the processing unit is arranged to ,apply a plurality of correction factors on the detected positions of the stationary object in the local coordinate system such that a plurality of corrected detected positions is obtained,transform the corrected detected positions into the global coordinate system;calculate an error/cost value for each of the ...

MERGE-SPLIT TECHNIQUES FOR SENSOR DATA FILTERING

A technique for tracking objects includes: determining a set of detected measurements based on a received return signal; determining a group that includes a set of group measurements and a set of group tracks; creating a merged factor, including a merged set of track state hypotheses associated with a merged set of existing tracks including a first set of existing tracks and a second set of existing tracks, by calculating the cross-product of a first set of previous track state hypotheses and a second set of previous track state hypotheses; determining a first new factor and a second new factor; calculating a first set of new track state hypotheses for the first new factor based on a first subset of the group measurements; and calculating a second set of new track state hypotheses for the second new factor based on a second subset of the group measurements. 1. A non-transitory computer-readable storage medium storing instructions which , when executed by one or more computing devices , cause performance of operations comprising:transmitting an outgoing signal into an environment;receiving a return signal, wherein the return signal includes reflection of the outgoing signal from objects in the environment;determining a set of detected measurements based on the received return signal, the detected measurements corresponding to respective detections of objects in the environment; a first track associated with a first previous factor, the first previous factor including a first set of previous track state hypotheses, the first set of previous track state hypotheses associated with a first set of existing tracks that includes the first track; and', 'a second track associated with a second previous factor, the second previous factor including a second set of previous track state hypotheses, the second set of previous track state hypotheses associated with a second set of existing tracks that includes the second track;, 'determining a group that includes a set of group ...

METHOD AND APPARATUS FOR PHASE UNWRAPPING OF SYNTHETIC APERTURE RADAR (SAR) INTERFEROGRAM BASED ON SAR OFFSET TRACKING SURFACE DISPLACEMENT MODEL

The present disclosure relates to a method and apparatus for phase unwrapping of an SAR interferogram based on an SAR offset tracking surface displacement model, in which the apparatus according to the present disclosure includes a Synthetic Aperture Radar (SAR) image acquisition unit that acquires two SAR images of a same object acquired at different times, a single look complex (SLC) image production unit that produces two SLC images corresponding to each of the two SAR images, an interferogram production unit that generates an SAR interferogram using SAR interferometry for the two SLC images, a surface displacement model production unit that produces an offset tracking surface displacement model using SAR offset tracking method for the two SLC images, an unwrapped residual interferogram generation unit that generates a residual interferogram by subtracting the SAR interferogram and the offset tracking surface displacement model, and generates an unwrapped residual interferogram by unwrapping the generated residual interferogram, and an unwrapped interferogram generation unit that generates an unwrapped SAR interferogram by adding the unwrapped residual interferogram to the offset tracking surface displacement model. 1. An apparatus comprising:a Synthetic Aperture Radar (SAR) image acquisition unit that acquires two SAR images of a same object acquired at different times;a single look complex (SLC) image production unit that produces two SLC images corresponding to each of the two SAR images;an interferogram production unit that generates an SAR interferogram using SAR interferometry for the two SLC images;a surface displacement model production unit that produces an offset tracking surface displacement model using SAR offset tracking method for the two SLC images;an unwrapped residual interferogram generation unit that generates a residual interferogram by subtracting the SAR interferogram and the offset tracking surface displacement model, and generates an ...

Pedestrian determination method and determination device

A host vehicle is provided with external environment recognition sensors that acquire forward information to determine that a pedestrian is present in a forward position of the host vehicle using the external environment recognition sensors. In this pedestrian determination method, a front camera and a millimeter wave radar are provided as the external environment recognition sensors. When a pedestrian candidate is detected in a forward position of the host vehicle based on an image signal from the front camera, a matching area is set with the position of the detected pedestrian candidate as the center point. When the position of the object that is closest to the pedestrian candidate from among the plurality of objects detected by reflected waves from the millimeter wave radar is within the matching area thereby establishing a match, the pedestrian candidate is determined to be a pedestrian.

ASSOCIATIVE OBJECT TRACKING SYSTEMS AND METHODS

Systems and methods track a first object when continuous tracking information for the first object is not available. The systems and methods detect when the tracking information for the first object is not available. A last time of a last determined location of the first object is determined and a second object closest to the last determined location at the last time is determined. The location of the first object is associated with a location of the second object if tracking information for the first object is not available. 1. A method for annotating a delayed feed of a sporting activity with tracking information determined within a tracking apparatus for a plurality of objects , comprising:determining when continuous location tracking information for a primary one of the plurality of objects is not available;when, for a period when the continuous location tracking information for the primary object is not available and based upon a highest probability defined within one or more predetermined scenarios of the sporting activity, speculatively associating the primary object with a first one of two secondary ones of the plurality of objects that are proximate a last location of the primary object;when the continuous location tracking information for the primary object becomes available after the period, receiving an updated location for the primary object and evaluating correctness of the speculative association of the primary object with the first secondary object based upon the updated location, to produce a non-speculative association of the primary object with one of the secondary objects; andoutputting the delayed feed with the tracking information for the first object based upon tracking information of the non-speculatively associated one of the secondary objects during the period when the continuous location tracking information is not available.2. The method of claim 1 , the step of outputting comprising:when the step of evaluating determines that the ...

Systems and Methods for Streaming Processing for Autonomous Vehicles

Generally, the present disclosure is directed to systems and methods for streaming processing within one or more systems of an autonomy computing system. When an update for a particular object or region of interest is received by a given system, the system can control transmission of data associated with the update as well as a determination of other aspects by the given system. For example, the system can determine based on a received update for a particular aspect and a priority classification and/or interaction classification determined for that aspect whether data associated with the update should be transmitted to a subsequent system before waiting for other updates to arrive. 120.-. (canceled)21. An autonomy computing system comprising:one or more processors; andone or more non-transitory computer-readable media that store instructions that, when executed by the one or more processors, cause the one or more processors to perform operations, the operations comprising:(a) accessing autonomy data descriptive of a first object and a second object in a surrounding environment of an autonomous vehicle;(b) determining an interaction classification associated with the first object relative to the second object, the interaction classification indicative of a likelihood that the first object and the second object will interact;(c) obtaining a first portion of additional autonomy data descriptive of an updated state of the first object;(d) determining an expected time estimate for receiving a second portion of additional autonomy data descriptive of an updated state of the second object;(e) when the expected time estimate for receiving the second portion of additional autonomy data satisfies a first threshold, determining a predicted updated state of the second object, a predicted track of the first object based on the updated state of the first object, and a predicted track of the second object based on the predicted updated state of the second object; and(f) ...

IN-VEHICLE DEVICE AND ESTIMATION METHOD

An object is to enable a state of a vehicle to be precisely estimated by a Kalman filter. A navigation system includes an observation unit that observes an observable concerning a variation of the vehicle, based on an output from a sensor, and an estimation unit that estimates a state quantity indicating a state of the vehicle by a Kalman filter, and the estimation unit calculates a prediction value of the state quantity of the vehicle, calculates an error covariance matrix of the prediction value, by the Kalman filter to which an error of the observable is inputted as an error of the state quantity which is in a relation of calculus with the observable, and calculates an estimation value of the state quantity of the vehicle and an error covariance matrix of the estimation value by the Kalman filter, based on the prediction value and the error covariance matrix of the prediction value which are calculated. 1. An in-vehicle device that is loaded on a vehicle , comprising:an observation unit that observes an observable concerning a variation of the vehicle, based on an output from a sensor; andan estimation unit that estimates a state quantity indicating a state of the vehicle by a Kalman filter,wherein the estimation unitcalculates a prediction value of the state quantity of the vehicle,calculates an error of the prediction value, by the Kalman filter to which an error of the observable is inputted as an error of the state quantity which is in a relation of calculus with the observable, andcalculates an estimation value of the state quantity of the vehicle and an error of the estimation value by the Kalman filter, based on the prediction value and the error of the prediction value which are calculated.2. The in-vehicle device according to claim 1 ,wherein the estimation unitcalculates the error of the prediction value, by the Kalman filter to which covariance of an error of the estimation value of the state quantity which is calculated at a previous time, and the ...

OBJECT DETECTION APPARATUS

A vehicle information providing apparatus (hereinafter, apparatus) repeatedly acquires observation point information. The apparatus calculates at least one position of the predicted point. When the observation point information is acquired, the apparatus extracts a predicted point that can be connected to the observation point from the calculated predicted points. The apparatus calculates the position of the current filtered point based on the position of the current observation point and the position of the latest predicted point. When the observation point information of a new object (an object having no latest predicted point connectable to the observation point) is acquired, the device sets initial vectors. The apparatus calculates the position of the predicted point at time instants succeeding the current time instant for each of the traveling directions indicated by the initial vectors. 1. An object detection device mounted on a vehicle and for detecting at least one object present in a vicinity of the vehicle , comprising:an acquiring unit configured to repeatedly acquire object information including at least a position of the object and a relative velocity between the vehicle and the object;a predicting unit configured to calculate at least one predicted position predicting the position of the object at time instants after the current time instant using the object information acquired by the acquiring unit up to the current time instant;an extracting unit configured to extract, from among the latest predicted positions calculated by the predicting unit, the predicted position satisfying a predetermined association judgement condition indicating that connection processing for associating with a position indicated by the latest object information can be performed, from among the predicted positions calculated by the predicting unit, when the object information is acquired by the acquiring unit; anda filter processing unit configured to calculate, as a current ...

NATURAL LANGUAGE INTERACTION FOR SMART ASSISTANT

A method for natural language interaction includes recording speech provided by a human user. The recorded speech is translated into a machine-readable natural language input relating to an interaction topic. An interaction timer is maintained that tracks a length of time since a last machine-readable natural language input referring to the interaction topic was translated. Based on a current value of the interaction timer being greater than an interaction engagement threshold, a message relating to the interaction topic is delivered with a first natural language phrasing that includes an interaction topic reminder. Based on the current value of the interaction timer being less than the interaction engagement threshold, the message relating to the interaction topic is delivered with a second natural language phrasing that lacks the interaction topic reminder. 1. A method for natural language interaction , comprising:receiving sensor data via a network;translating the sensor data into a machine-readable natural language input relating to an interaction topic;maintaining an interaction timer tracking a length of time since a last machine-readable natural language input relating to the interaction topic;based on a current value of the interaction timer being greater than an interaction engagement threshold, outputting a message relating to the interaction topic with a first natural language phrasing that includes an interaction topic reminder; orbased on the current value of the interaction timer being less than the interaction engagement threshold, outputting the message relating to the interaction topic with a second natural language phrasing that lacks the interaction topic reminder.2. The method of claim 1 , where the first natural language phrasing includes more words than the second natural language phrasing.3. The method of claim 1 , where the interaction topic reminder includes a summary of a most recent interaction with a human user relating to the interaction ...

IDENTIFICATION OF RANDOM SKIERS WHILE SKIING

A method is provided for identification of large numbers of skiers in ski slopes, in order to provide them automatically with pictures and videos of themselves during skiing. The method uses pattern matching of their tracked movement derived from a phase array ultra-low C-SWAP (cost, size, weight, and power) radar system and also from self-tracking of the skiers by their own mobile phones GPS. The OPS may be combined with a phase array Doppler radar in K band. 1. A method comprising:using a plurality of cameras triggered by radar to capture pictures and video motion of every skier of a plurality of skiers skiing on a ski course; andrecording tracking information of each skier within a radar detection area, said tracking information comprising points in space and time, wherein the time is derived from a GPS (global positioning system) device synchronized with another GPS device in the ski area, and wherein one of the GPS devices is a GPS device from a mobile phone of the skier being tracked.2. The method according to claim 1 , comprising using a fuzzy logic method so as not to achieve a perfect match between a radar tracking pattern and a mobile tracking pattern claim 1 , but to achieve a “reasonable match” for any one pattern from the mobile tracking sets to a one or more patterns from the radar targets tracking sets.3. The method according to claim 1 , wherein the radar detection is done with a phase array Doppler radar in K band.4. The method according to claim 3 , comprising using a Doppler filter with said phase array Doppler radar to reduce an amount of signals which require processing. The present invention relates generally to a process and implementation of identification of large numbers of skiers in ski slopes, in order to provide them automatically with pictures and videos of themselves during skiing. In one example, the invention is related to identification of random skiers based on pattern matching of phase array radar targeting and mobile tracking for ...

FORWARD MANEUVERING ASSISTANCE USING HEAD-UP DISPLAY

A system is described for providing forward maneuvering information of a vehicle to avoid obstacles that may damage the vehicle. The system includes a microprocessor configured to execute instructions stored on a non-transitory computer readable medium. The microprocessor is coupled to a sensor, a monitoring sensor, and a head-up display (HUD). The sensor receives information of surroundings of the vehicle. The monitoring sensor determines an angle of a steering wheel. The microprocessor receives the information and the angle, determines a guided path for the vehicle based on the information and the angle, and transmits the guided path to the HUD. 1. A system for providing forward maneuvering information of a vehicle , comprising:a microprocessor, the microprocessor being configured to execute instructions stored on a non-transitory computer readable medium;a sensor coupled to the microprocessor and configured to receive information of surroundings of the vehicle;a monitoring sensor coupled to the microprocessor and configured to determine an angle of a steering wheel; anda head-up display (HUD) coupled to the microprocessor; receive the information and the angle;', 'determine a guided path for the vehicle based on the information and the angle; and', 'transmit the guided path to the HUD, wherein the guided path is configured to avoid a plurality of obstacles while passing between at least two of the plurality of obstacles., 'wherein the microprocessor is further configured to2. The system of claim 1 , wherein the information is defined as an obstacle proximate to the guided path of the vehicle.3. The system of claim 2 , wherein the microprocessor is further configured to generate an indication representing the obstacle.4. The system of claim 2 , wherein the microprocessor is further configured to transmit an alert to the HUD claim 2 , the alert being defined as instructions to steer the vehicle away from the obstacle and along the guided path.5. The system of claim ...

Traffic management system and an unmanned aerial vehicle compatible with such a system

The present invention relates to a traffic management system, a traffic management method, a computer program product, and an unmanned aerial vehicle compatible with such a system. The traffic management system comprises a millimetre wave base station having a communication mode and a radar mode, and operating in a first frequency range of 0.6 GHz-6 GHz and a second frequency range of 24 GHz-86 GHz. The system further has a control unit configured to operate the base station in the radar mode and the communication mode.

Wireless in-shoe physical activity monitoring apparatus

A wireless in-shoe physical activity monitoring apparatus includes left and right shoe sensor systems. A shoe sensor system includes pressure sensing elements, an accelerometer, and a control circuit that includes a power source circuit, a clock circuit, a processing module, memory, a wireless communication transceiver, sensor communication links, and an accelerometer communication link. The processing module samples data from the pressure sensing element to produce foot force data and samples data from the first accelerometer to produce three-dimensional foot data. The wireless communication transmits as outbound radio frequency (RF) signals regarding the foot force data and the three-dimensional foot data.

SYSTEMS AND METHODS FOR DOPPLER-ENHANCED RADAR TRACKING

A method for Doppler-enhanced radar tracking includes: receiving a reflected probe signal at a radar array; calculating a target range from the reflected probe signal; calculating a first target angle from the reflected probe signal; calculating a target composite angle from the reflected probe signal; and 1. A method for Doppler-enhanced radar tracking comprises:transmitting a probe signal;receiving a reflected probe signal at a radar array in response to reflection of the probe signal by a tracking target, wherein the tracking target and radar array are connected by a target vector; wherein the radar array comprises a first plurality of radar elements positioned along a first radar axis;calculating a target range from the reflected probe signal;calculating a first target angle between a first reference vector and a first projected target vector from the reflected probe signal; wherein the first projected target vector is the target vector projected into a first reference plane, the first reference plane containing both of the first radar axis and the first reference vector;calculating a target composite angle from the reflected probe signal; wherein the target composite angle is an angle between the target vector and a composite reference vector; andcalculating a three-dimensional position of the tracking target relative to the radar array from the target range, first target angle, and target composite angle.2. The method of claim 1 , wherein calculating the first target angle comprises calculating one of elevation and azimuth.3. The method of claim 1 , wherein calculating the first target angle comprises calculating the first target angle from phase differences in the reflected probe signal as received by the first plurality of radar elements.4. The method of claim 3 , further comprising receiving egovelocity data; wherein calculating the target composite angle comprises calculating Doppler frequency shift data from the probe signal and reflected probe signal; ...

Multibounce Target Mitigation

A method is provided that includes a method is provided that includes transmitting a radar signal by a radar system. The method also includes receiving reflections of the radar signal from an environment by the radar system. Additionally, the method includes receiving a location of a plurality of objects in the environment by a radar processing system. The method further includes tracking a plurality of reflecting objects in the environment based on the received reflections by the radar processing system. Yet further, the method includes determining, by the radar processing system, that a received radar reflection corresponds to one of the plurality objects in the environment having an incorrect location. Moreover, the method includes revising a tracking for the one of the plurality objects in the environment having an incorrect location.

ELECTRIC OR ELECTRONIC DEVICE MODULE COMPRISING AT LEAST ONE RADAR SENSOR

An electric or electronic device module comprises an electronic device, means for powering the electric or electronic device module, and at least one radar sensor having a detection range. The electric or electronic device module has a processor adapted for calibrating the at least one radar sensor by at least partly automatically defining and calculating parameters of boundaries of a predefined geometry, in which the at least one radar sensor has to measure, in order to prevent the at least one radar sensor from taking into account measurements outside that predefined geometry. The predefined geometry is located within the detection range of the at least one radar sensor and is equally sized to or smaller than that detection range of the at least one radar sensor. 121.-. (canceled)22. An electric or electronic device module comprising:an electric or electronic device,a powering system for powering the electric or electronic device module, andat least one radar sensor having a detection range,wherein the electric or electronic device furthermore comprises a processor adapted for calibrating the at least one radar sensor by at least partly automatically defining and calculating parameters of boundaries of a predefined geometry in which the at least one radar sensor has to measure, in order to prevent the at least one radar sensor from taking into account measurements outside the predefined geometry;wherein the predefined geometry is located within the detection range of the at least one radar sensor and is equally sized to or smaller than the detection range of the at least one radar sensor.23. The electric or electronic device module according to claim 22 , further comprising a storage device for storing the parameters of the boundaries of the predefined geometry.24. The electric or electronic device module according to claim 22 , wherein the at least one radar sensor is adapted for setting up a range-angle map of the predefined geometry by scanning in at least one ...

Tracking device with deferred activation and propagation of passive tracks

A tracking device is configured to estimate a track for at least one possible target and is configured to receive incoming measurements and to process measurements and tracks. The tracking device includes a storage and a computational device. The tracking device is also configured to divide all measurements into a set of considered measurements and a set of unconsidered measurements for each passive track.

Polarization Axis Attenuation and Cross Polarization Resistant Antenna Orientation Assembly for Tracked Object

Methods and systems related to an antenna orientation are disclosed herein. In one specific embodiments, a system comprises a positioning device configured to generate a positioning signal, a control object, and an object antenna configured to receive the positioning signal. The object antenna has a first polarization axis and is located on the control object. The system also comprises a positioning device antenna configured to transmit the positioning signal. The positioning device antenna has a second polarization axis and is located on the positioning device. The first polarization axis and the second polarization axis are offset from parallel by greater than thirty degrees when the positioning device and control object are in a standard operating mode. The first polarization axis and the second polarization axis are offset from perpendicular by greater than thirty degrees when the positioning device and control object are in a standard operating mode. 1. A system comprising:a positioning device configured to generate a positioning signal;a control object;an object antenna configured to receive the positioning signal, having a first polarization axis, and located on the control object;a positioning device antenna configured to transmit the positioning signal, having a second polarization axis, and located on the positioning device;wherein the first polarization axis and the second polarization axis are offset from parallel by greater than thirty degrees when the positioning device and control object are in a standard operating mode; andwherein the first polarization axis and the second polarization axis are offset from perpendicular by greater than thirty degrees when the positioning device and control object are in a standard operating mode.2. The system of claim 1 , wherein:the positioning signal is an ultra-wide band positioning signal; andthe object antenna and positioning device antenna are both omnidirectional and linear polarization antennas.3. The system ...

METHOD AND AN APPARATUS FOR DETERMINING A DEVIATION BETWEEN AN ACTUAL DIRECTION OF A LAUNCHED PROJECTILE AND A PREDETERMINED DIRECTION

In a method of determining a deviation of a path of a projectile from a predetermined path, the method uses an image of a target area in which the desired path or direction is pointed out. Subsequently, the real direction or real path is determined and the deviation is determined. 110-. (canceled)11. A system for relating radar data to an image to track the flight of a projectile comprising:a radar providing radar data of at least a portion of a trajectory of a projectile;an imager providing an image of an area into which the projectile is to be launched;a controller receiving the image from the imager and the radar data from the radar the controller generating trajectory data of the projectile by correlating the radar data with the image; anda display displaying the trajectory data.12. The system according to claim 11 , wherein the controller receives an identification of a target within the image claim 11 , the controller identifying a target line connecting the target and a launch position of the projectile.13. The system according to claim 12 , wherein the controller alters the image to display the trajectory data within the image.14. The system according to claim 12 , wherein the controller determines a deviation value between the portion of the trajectory and the target line claim 12 , and wherein the display displays the deviation value.15. The system according to claim 12 , wherein the target is identified by input received by the controller from a user.16. The system according to claim 12 , wherein the controller determines a distance from the radar to the target.17. The system according to claim 16 , wherein the controller determines the distance from the radar to the target based on a comparison of a known size of a feature in the image with a size in the image of the feature.18. The system according to claim 11 , wherein the controller identifies a landing position of the projectile.19. The system according to claim 15 , wherein the user input is ...

LOCAL OBJECT DETECTION SYSTEM

A method includes transmitting one or more local transmit radar signals and receiving a plurality of local receive radar signals that corresponds to the one or more local transmit radar signals being reflected or refracted off an object. The method further includes processing the plurality of local receive radar signals to determine a relative position of the object. The method further includes determining whether the object is positioned within a desired detection volume associated with a position of the transmitter section. When the object is positioned within the desired detection volume, further processing the local receive radar signals to determine movement pattern of the object and whether the movement pattern of the object is within a range of plausible movements for the object. When the movement pattern of the object is within a range of plausible movements for the object, tracking movement of the object within the desired detection volume. 1. A method comprises:transmitting, by a transmitter section of a local object detection system, one or more local transmit radar signals;receiving, by a plurality of receivers of the local object detection system, a plurality of local receive radar signals that corresponds to the one or more local transmit radar signals being reflected or refracted off an object;processing, by a processing module of the local object detection system, the plurality of local receive radar signals to determine a relative position of the object;determining, by the processing module, whether the object is positioned within a desired detection volume associated with a position of the transmitter section;when the object is positioned within the desired detection volume, further processing, by the processing module, the plurality of local receive radar signals to determine movement pattern of the object;determining, by the processing module, whether the movement pattern of the object is within a range of plausible movements for the object; ...

TARGET-FOLLOWING CARRIER

A target-following carrier is disclosed. The target-following carrier includes a target-end device, a moving carrier and a target following assembly. The target-following carrier provided by the present invention utilizes two techniques to detect the distance between a target and the moving carrier. When said detected distance is shorter than a control exchange distance, distance data from laser rangefinders replace that from two RF modules. Therefore, a relative-distanced following can be applied to the target. Meanwhile, the target following assembly can be made compact to mount on any moving carriers, such as a smart luggage or a golf cart, fulfilling the requirements from the market. 1. A target-following carrier , comprising: a signal transmitting RF module, working to send RF signals;', 'a first power module, electrically connected to the signal transmitting RF module, for providing power for operating;', 'a first control unit, electrically connected to the signal transmitting RF module and the first power module, managing operation of the signal transmitting RF module; and', 'a fixing module, carrying the signal transmitting RF module, the first power module and the first control unit, mounted on a target to be followed;, 'a target-end device, comprising a housing, having an accommodation space;', 'a moving module, integrated with the housing, moving on the ground according to received commands; and', 'a second power module, detachably connected to the housing, working to provide power; and, 'a moving carrier, comprising a signal receiving RF module, pairing with the signal transmitting RF module, working to receive the RF signals sent from the signal transmitting RF module;', 'at least 3 laser rangefinders, mounted aside the signal receiving RF module, each calculating a relative distance between itself and the target; and', 'a controller, signally connected with the signal receiving RF module and the at least 3 laser rangefinders, operating to calculate an ...

METHOD AND SYSTEM FOR FOLLOWING TARGET

A system and a method for following a target are disclosed. The system includes steps of: A. providing a signal transmitting RF module mounted on a target, a signal receiving RF module on a moving carrier, and at least 3 laser rangefinders aside the signal receiving RF module; B. calculating an estimated distance and a directional angle; C. driving the moving carrier toward the target while maintaining the directional angle substantially 0 degree; D. repeating step B and step C until the estimated distance is shorter than a control exchange distance; E. dynamically tracking the target by one of the laser rangefinders so that a relative distance between said laser rangefinder and the target can be successively calculated while calculating the estimated distance and the directional angle; and F. driving the moving carrier to keep the relative distance within a predetermined range and maintain the normal direction substantially toward the target. 1. A method for following a target , comprising the steps of:A. providing a signal transmitting radio frequency (RF) module mounted on a target, a signal receiving RF module on a moving carrier, and at least 3 laser rangefinders aside the signal receiving RF module;B. calculating an estimated distance between the signal transmitting RF module and the signal receiving RF module, and a directional angle between a direction from the signal transmitting RF module to the signal receiving RF module and a normal direction to a front plane of the moving carrier where the signal receiving RF module is located by RF signals sent from the signal transmitting RF module and received by the signal receiving RF module, wherein a first laser rangefinder has a tracing direction substantially along with the normal direction for sending and receiving laser beams;C. driving the moving carrier toward the target while maintaining the directional angle substantially 0 degree;D. repeating step B and step C until the estimated distance is shorter than ...

Multiple sensor tracking system and method

A system and method for tracking the flight of golf balls at driving range. The system includes a plurality of hitting stations, a plurality of sensors, a computer, and a range surface. Each hitting station in the plurality of hitting stations includes a golf ball, a golf club, a monitor, and a sensor. At least one other sensor in the plurality of sensors is placed outside a hitting station. The flight path of the golf balls being calculated by the computer using parameters by the plurality of sensors. The method includes steps for determining whether a first sensor detected a first parameter and a second parameter, whether a second sensor detected a first and a second parameter, whether a third sensor detected a third parameter, and depicting the flight path of the golf balls using the first parameter, the second parameter, and the third parameter.

DOPPLER MEASURMENTS TO RESOLVE ANGLE OF ARRIVAL AMBIGUITY OF WIDE APERTURE RADAR

A system and method to resolve angle of arrival (AOA) ambiguity in a radar system include receiving received reflections at a plurality of transceiver nodes. Each transceiver node among the plurality of transceiver nodes of the radar system receives one or more of the received reflections at respective one or more receive elements. The method includes determining candidate AOAs {circumflex over (θ)}based on phases differences in the received reflections at the plurality of transceiver nodes, and determining Doppler frequencies fbased on the received reflections. An estimated AOA {circumflex over (θ)} is selected from among the candidate AOAs {circumflex over (θ)}based on matching metrics μbetween the Doppler frequencies and the candidate AOAs {circumflex over (θ)}. 1. A method of resolving angle of arrival (AOA) ambiguity in a radar system , the method comprising:receiving received reflections at a plurality of transceiver nodes, wherein each transceiver node among the plurality of transceiver nodes of the radar system receives one or more of the received reflections at respective one or more receive elements;{'sub': 'i', 'determining candidate AOAs {circumflex over (θ)}based on phases differences in the received reflections at the plurality of transceiver nodes;'}{'sub': 'd', 'sup': 'i', 'determining Doppler frequencies fbased on the received reflections; and'}{'sub': i', 'i', 'i, 'selecting an estimated AOA {circumflex over (θ)} from among the candidate AOAs {circumflex over (θ)}based on matching metrics μbetween the Doppler frequencies and the candidate AOAs {circumflex over (θ)}.'}2. The method according to claim 1 , further comprising developing a matrix A of actual received signals a(θ) claim 1 , wherein each a(θ) is a vector of the actual received signals at each of the one or more receive elements of each of the plurality of transceiver nodes for a given actual AOA θ.4. The method according to claim 3 , wherein the determining the candidate AOAs {circumflex ...

Method of determining an uncertainty estimate of an estimated velocity

A method of determining an uncertainty estimate of an estimated velocity of an object includes, determining the uncertainty with respect to a first estimated coefficient and a second estimated coefficient of the velocity profile equation of the object. The first estimated coefficient being assigned to a first spatial dimension of the estimated velocity and the second estimated coefficient being assigned to a second spatial dimension of the estimated velocity. The velocity profile equation represents the estimated velocity in dependence of the first estimated coefficient and the second estimated coefficient. The method also includes determining the uncertainty with respect to an angular velocity of the object, a first coordinate of the object in the second spatial dimension, and a second coordinate of the object in the first spatial dimension.

METHOD AND APPARATUS FOR TRACKING TARGET FROM RADAR SIGNAL USING ARTIFICIAL INTELLIGENCE

Disclosed is a technique for processing signals received from a radar and, in particular, a technique for tracking a target on the basis of detected target candidate signals. The proposed invention introduces a recurrent neural network with a memory function in order to find a target signal from signals with noise and fake signals mixed therein. This recurrent neural network is trained to have a maximum of Q tracking buffers therein. According to an additional aspect, it is possible to increase tracking accuracy through a serial connection of the recurrent neural network. According to an additional aspect, it is possible to track multiple targets through a parallel connection of the recurrent neural network. 1. A method of tracking a radar target , the method comprising:a recurrent neural network processing operation in which pointers including position information and speed information of a maximum of N target candidates existing in a processing window are processed with a recurrent neural network and M ( Подробнее

Detecting roadway targets across beams

The present invention extends to methods, systems, and computer program products for detecting targets across beams at roadway intersections. Embodiments of the invention include tracking a target across a plurality of beams of a multiple beam radar system in a roadway intersection and updating track files for targets within a roadway intersection. Returns from a plurality of radar beams monitoring a roadway intersection are divided into range bins. Identified energy in the range bins is used to compute the position of targets within a roadway intersection. When the position of a target is computed, it is determined if the position is a new position for an existing target or if the position is the position of a new target.

Conformal Array, Luneburg Lens Antenna System

A Luneburg lens is used in conjunction with a patch antenna array. The patch antenna array is conformed or adapted to cover a portion or backside of the Luneburg len's surface with the backplane of the conformed antenna array defining a field of regard (FOR) in which objects are detected and tracked. A processor is connected to a receiver/exciter module which connects to transmit/receive modules which are connected to the individual patch antennas through a network of MEMS switches. In a receive mode, selected subarrays of the conformed patch antenna array are scanned during selected time intervals with the sum and delta beams being formed coherently in amplitude and phase to realize amplitude monopulse sensing and angle tracking of an object. 1. A system for object detection and radar tracking , comprising:{'b': 112', '114, 'a Luneburg lens () having a curved outside surface ();'}{'b': 120', '114, 'an array () of patch antennas arranged in a manner to conform to a portion of the outside surface () of said Luneburg lens, said array of patch antennas forming a plurality of subarrays with each subarray of said plurality of subarrays having at least two patch antennas in each column and two patch antennas in each row;'}{'b': 28', '28', '28', '28, 'a plurality of transmit/receive modules (A, B, C, D) electrically connected to said array of patch antennas;'}{'b': '130', 'a receiver-exciter module () electrically connected to said plurality of transmit/receive modules;'}{'b': '132', 'a processor () electrically connected to said plurality of transmit/receive modules; and'}{'b': '175', 'wherein said Lunenburg lens, when receiving incident radiation at a given angle from a detected object in the field of regard of said system, focuses a blur spot () which is large enough to be detected by each patch antenna of a particular subarray of said plurality of subarrays, where said particular subarray has at least two patch antennas in each column and at least two patch antennas in ...

Methods and systems for improved measurement, entity and parameter estimation, and path propagation effect measurement and mitigation in source signal separation

A method of processing a signal includes taking a signal recorded by a plurality of signal recorders, applying at least one super-resolution technique to the signal to produce an oscillator peak representation of the signal comprising a plurality of frequency components for a plurality of oscillator peaks, computing at least one Cross Channel Complex Spectral Phase Evolution (XCSPE) attribute for the signal to produce a measure of a spatial evolution of the plurality of oscillator peaks between the signal, identifying a known predicted XCSPE curve (PXC) trace corresponding to the frequency components and at least one XCSPE attribute of the plurality of oscillator peaks and utilizing the identified PXC trace to determine a spatial attribute corresponding to an origin of the signal.

Device for sensing a moving ball and method for computing parameters of moving ball using the same

The present invention is not a method of directly calculating the rotational characteristics of a ball through frequency analysis of a received signal as in the prior arts, but a method of determining a final spin information by finding the spin information of the moving ball while approaching a ball trajectory predicted in terms of the trajectory of a moving ball using the position coordinate data of the ball to the trend data indicating the trend of the position coordinates of the moving ball. The present invention provides a method of finding the spin in terms of the trajectory of the moving ball, regardless of whether it is possible to check the frequency characteristics of the rotation of the ball from the signal reflected from the moving ball, and thus derives a fairly accurate and uniform spin calculation result.

SYNTHESIZED PROFILE

A target identifier can be configured to determine a synthesized profile for a target based on active sensor data that characterizes a radio frequency (“RF”) signal reflected by the target and received at an active sensor system. The synthesized profile can characterize an estimated Line of Bearing (“LoB”) and a radial speed (“Rdot”) of the target relative to a passive sensor system. The target identifier can also be configured to match the synthesized profile with a measured profile that is determined based on RF signals received at the passive sensor system. The measured profile characterizes a measured LoB and a measured Rdot of the target. 1. A target identifier comprising one or more computing devices having machine readable instructions , the target identifier being configured to:determine a synthesized profile for a target based on active sensor data that characterizes a radio frequency (“RF”) signal reflected by the target and received at an active sensor system, wherein the synthesized profile characterizes an estimated Line of Bearing (“LoB”) and a radial speed (“Rdot”) of the target relative to a passive sensor system; andmatch the synthesized profile with a measured profile that is determined based on RF signals received at the passive sensor system, wherein the measured profile characterizes a measured LoB and a measured Rdot of the target.2. The target identifier of claim 1 , wherein the active sensor system and the passive sensor system are remotely located from each other.3. The target identifier of claim 1 , wherein the synthesized profile is further based on kinematics of the passive sensor system.4. The target identifier of claim 3 , wherein the kinematics of the passive sensor system comprises data characterizing a position and a velocity of the passive sensor system.5. The target identifier of claim 1 , wherein the matching comprises executing a statistical analysis comparing the synthesized profile with the measured profile.6. The target ...

Event classification and object tracking

This application discloses a computing system to implement object tracking in an assisted or automated driving system of a vehicle. The computing system can assign a pre-classification to a detection event in an environmental model, update the environmental model with new sensor measurements and corresponding detection events over time, and track the detection event in the updated environmental model. The computing system can track the detection event by predicting a future state of the detection event with a state change model selected based on the assigned pre-classification, comparing the predicted future state to an actual future state of the detection event in an update to the environmental model, and determining the detection event corresponds to an object proximate to the vehicle based on the comparison. A control system for the vehicle can control operation of the vehicle based, at least in part, on the tracked detection event.

SYSTEMS AND METHODS FOR VIRTUAL APERATURE RADAR TRACKING

A system for virtual aperture array radar tracking includes a transmitter that transmits first and second probe signals; a receiver array including a first plurality of radar elements positioned along a first radar axis; and a signal processor that calculates a target range from first and second reflected probe signals, corresponds signal instances of the first reflected probe signal to physical receiver elements of the radar array, corresponds signal instances of the second reflected probe signal to virtual elements of the radar array, calculates a first target angle between a first reference vector and a first projected target vector from the first reflected probe signal, and calculates a position of the tracking target relative to the radar array from the target range and first target angle. 1a transmitter that transmits first and second probe signals, the first probe signal having a first phase function and the second probe signal having a second phase function;a receiver array, comprising a first plurality of radar elements positioned along a first radar axis, that receives a first reflected probe signal in response to reflection of the first probe signal by a tracking target and a second reflected probe signal at the radar array in response to reflection of the second probe signal by the tracking target; wherein the tracking target and radar array are connected by a target vector; anda signal processor that calculates a target range from at least one of the first and second reflected probe signals, corresponds signal instances of the first reflected probe signal to physical receiver elements of the radar array, corresponds signal instances of the second reflected probe signal to virtual elements of the radar array, calculates a first target angle between a first reference vector and a first projected target vector from the first reflected probe signal, and calculates a position of the tracking target relative to the radar array from the target range and first ...

METHOD AND DEVICE FOR DISPLAYING INFORMATION

An information display device () is provided, which includes a distance setting module () configured to set a distance, a closest approach position estimating module () configured to estimate a closest approach position (Psa, Psb) of a first ship (S) and a closest approach position (Pa, Pb) of a second ship (Ea, Eb) at a time point when the first and second ships (S, Ea, Eb) approach each other the closest, based on navigational information of the ships (S, Ea, Eb), and a display controlling module () configured to cause a display screen to display the estimated closest approach position (Pa, Pb) of the second ship (Ea, Eb), a risk area (Aa, Ab), and current positions of the ships (S, Ea, Eb), the risk area (Aa, Ab) formed into a circle based on the set distance, centering on the estimated closest approach position (Psa, Psb) of the first ship (S). 1. An information display device , comprising:a distance setting module configured to set a distance;a closest approach position estimating module configured to estimate a closest approach position of a first ship and a closest approach position of a second ship at a time point when the first and second ships approach each other the closest, based on navigational information of the first and second ships; anda display controlling module configured to cause a display screen to display the estimated closest approach position of the second ship, a risk area, and current positions of the first and second ships, the risk area formed into a circle based on the set distance, centering on the estimated closest approach position of the first ship.2. The information display device of claim 1 , wherein the display controlling module causes the display screen to display a closest approach period of time that is an estimated period of time until the first and second ships reach the closest approach positions claim 1 , respectively.3. The information display device of claim 2 , wherein the display controlling module causes the display ...

Device and Method for Determining the Initial Direction of Movement of an Object in the Detection Range of a Motor Vehicle Radar Sensor

The present invention relates to the determination of an improved initial direction of movement of sensor-detected objects. The directions of movement of sensor-detected objects are determined and stored. On the basis of these stored directions of movement of detected objects, an initial direction of movement corresponding to a direction of movement of an object detected previously in the same location can be assigned to a newly detected object in a simple manner. 112. A device () for detecting an object () , comprising:{'b': 10', '2', '10', '2, 'a detector unit () configured to detect an object () in a detection range of the detector unit () and establish a position of the detected object () in the detection range;'}{'b': '11', 'a memory () configured to store information regarding a direction of movement of objects detected previously and a corresponding position of the objects detected previously in the detection range;'}{'b': 12', '2', '11, 'a computing unit () configured to calculate an initial direction of movement of the detected object () using the information stored in the memory ().'}2110. The device () according to claim 1 , wherein the detector unit () comprises a radar sensor.31131021011. The device () according to claim 1 , further comprising a processing unit () configured to determine a movement path through the detection range of the detector unit () on the basis of established positions of the detected object () and claim 1 , using the movement path in the detection range of the detector unit () claim 1 , to calculate a direction of movement and store it in the memory () together with the corresponding position.41132. The device () according to claim 3 , wherein the processing unit () is configured to calculate the movement path by interpolation between at least two positions of the detected object () from the detection range.511310. The device () according to claim 3 , wherein the processing unit () is configured to calculate the movement ...

Artificial-Intelligence Controlled Adaptive Multi-Purpose Beam Forming Automobile Radar

A radar system to track objects for a vehicle may include a plurality of transmitters to transmit a signal; a plurality of receivers to receive the signal; and an adjustment circuit to adjust the bandwidth of the transmitted signal in accordance with the received signal from the receivers of the radar system. 1) A radar system to track objects for a vehicle , comprising:a plurality of transmitters to transmit a signal;a plurality of receivers to receive the signal;a adjustment circuit to adjust the bandwidth of the transmitted signal in accordance with the received signal from the receivers of the radar system,2) A radar system to track objects for a vehicle as in claim 1 , wherein the adjustment circuit adjusts the power of the transmitted signal in accordance with the received signal from the receivers of the radar system.3) A radar system to track objects for a vehicle as in claim 2 , wherein the adjustment circuit adjusts the steering angle of the transmitted signal in accordance with the received signal from the receiver of the radar system.4) A radar system to track objects for a vehicle as in claim 1 , wherein the adjustment circuit includes at least three timeslots including a first time slot where the adjustment circuit operates in a long distance mode claim 1 , a second time slot where the adjustment circuit operates in a mid distance mode and a third time slot where the adjustment circuit operates in a near distance mode.5) A radar system to track objects for a vehicle as in claim 4 , wherein the adjustment circuit controls the operation of the vehicle.6) A radar system to track objects for a vehicle as in claim 5 , wherein the adjustment circuit controls the steering of the vehicle.7) A radar system to track objects for a vehicle as in claim 5 , wherein the adjustment circuit controls the breaking of the vehicle.8) A radar system to track objects for a vehicle as in claim 4 , wherein the long time slot claim 4 , mid time slot and the near time slot is ...

OBJECT TRACKING USING COGNITIVE HETEROGENEOUS AD HOC MESH NETWORK

Embodiments described herein are directed to tracking objects using a cognitive heterogeneous ad hoc mesh network. A first participant receives a notification signal from a second participant. The first participant determines first positioning information from the notification signal and second positioning information from characteristics of the received signal. If the difference between the first and second positioning information is below a first threshold, then the second participant is within line-of-sight of the first participant. If the difference is above the first threshold and below a second threshold, then the second participant may have a malfunctioning sensor. But if the difference is above the second threshold, then the second participant is not within line-of-sight of the first participant and the received signal was reflected off another object. The positioning information can then be refined or transmitted to other participants. 1. A method comprising:receiving, by a computing device of a first participant, a communication signal that includes first positioning information of a second participant;determining, by the computing device of the first participant, second positioning information of the second participant based on characteristics of the received communication signal;determining, by the computing device of the first participant, a positioning information difference between the first and second positioning information;determining, by the computing device of the first participant, if the positioning information difference is below a first threshold, above the first threshold and below a second threshold, or above the second threshold;in response to the positioning information difference being below the first threshold, transmitting, by the computing device of the first participant, the first positioning information of the second participant to a third participant; refining the first positioning information of the second participant; and', ' ...

Object tracking via radio reflections

In one aspect, a reference transmit signal is distributed to each of one or more transmit antennas, and delayed by multiple different times before transmission from the transmit antennas. The reference transmit signal (or a delayed version of the reference signal) is also used at each of the receive antennas to determine propagation (time of flight) times reflecting from bodies from each of the transmit antennas to the receive antenna. In another aspect, locations of multiple objects are determined by iteratively (a) determining a location of a body based on determined propagation times between multiple transmitter-receiver pairs, and (b) having determined a location, effectively removing the effect of reflections from that location from the remaining signals.

Device, system, and method of aircraft protection and countermeasures against threats

Device, system, and method of aircraft protection and countermeasures against threats. A system for protecting an aircraft against a threat, includes a dual frequency Radio Frequency (RF) module, which includes: a dual-band RF transmitter and a dual-band RF receiver, to transmit and receive high-band RF signals and low-band RF signals; and a threat confirmation and tracking module, to confirm and track a possible incoming threat based on processing of high-band RF signals and low-band RF signals received by the dual-band RF receiver. The system further includes a dual frequency band antenna, to transmit and receive the high-band RF signals and the low-band RF signals. The system also includes a directed high-power laser transmitter, to activate a directed high-power laser beam as countermeasure towards a precise angular position of a confirmed threat.

RADAR DEVICE AND DETECTION METHOD OF TARGET POSITION OF RADAR DEVICE

[OBJECT] To provide a radar device capable of detecting a position of a target in a direction orthogonal to a viewing angle. 1. A radar device which detects a target by using a radio wave , comprising:a receiving array antenna where a plurality of receiving antenna elements each having a predetermined length in a first direction are arranged to be disposed in a second direction almost orthogonal to the first direction;a dispersion part which is disposed in a vicinity of the receiving array antenna, and dispersion properties of the radio wave change with respect to the first direction; anda detection part which detects a position of the target in the first direction based on the radio wave reflected by the dispersion part.2. The radar device according to claim 1 , whereinthe receiving array antenna is disposed on a circuit board, andthe dispersion part is disposed in the vicinity of the receiving array antenna of the circuit board.3. The radar device according to claim 1 , whereinthe receiving array antenna is disposed on a circuit board, andthe dispersion part is disposed on a radome which is provided to cover the circuit board where the receiving array antenna is disposed.4. The radar device according to claim 1 , whereintwo dispersion parts are disposed so as to sandwich the receiving array antenna, and the two dispersion parts have the same dispersion properties in the first direction.5. The radar device according to claim 1 , whereintwo dispersion parts are disposed so as to sandwich the receiving array antenna, and the two dispersion parts have the dispersion properties inverted from one another in the first direction.6. The radar device according to claim 1 , whereinthe receiving antenna elements are disposed with a distance of λ/2 in the second direction when a wavelength of the radio wave is set as λ.7. The radar device according to claim 1 , whereinthe receiving antenna elements are disposed with a distance of less than λ/2 in the second direction when a ...

Human Target Tracking System and Method

In an embodiment, a method for tracking human targets includes: receiving radar signals using a radar sensor; generating a range-Doppler map based on the received radar signals; detecting a human target based on the range-Doppler map, where detecting the human target includes determining a range and a bounding box dimension of a bounding box bounding the detected human target, the bounding box at least partially surrounding the detected human target; and when the determined range is inside an expected region associated to a track, adding to the track a new detection point including the determined range and bounding box dimension, where the expected region is determined based on bounding box dimensions of detection points of the track.

Extended Object Tracking Using RADAR

Techniques are provided for extended object tracking using RADAR return points only. The techniques include receiving the return points from at least one RADAR sensor of the vehicle. One or more clusters based on or from the return points are generated. An estimated position and velocity of each of the one or more clusters is computed. A Recursive Least Squares (RLS) based algorithm is proposed to estimate the instantaneous velocity of a cluster in real-time that allows for accurate track-cluster association, removes the need to perform computationally expensive non-linear state updates, and allows for the estimation of the true velocity even in frames with a large amount of clutter. If it is determined that the one or more clusters are associated with an existing object track, the existing object track is updated using at least the respective positions of the one or more clusters associated with the existing object track. 1. A method comprising:receiving, using one or more processors of a vehicle, return points from at least one RADAR sensor of the vehicle;generating, using the one or more processors, one or more clusters based on or from the return points;computing, using the one or more processors, an estimated position and a velocity of each of the one or more clusters;determining, using the one or more processors, if the one or more clusters are associated with an existing object track; andin accordance with the one or more clusters being associated with the existing object track,updating the existing object track using at least the respective positions of the one or more clusters associated with the existing object track.2. The method of claim 1 , wherein generating the one or more clusters further comprises:filtering, using the one or more processors, return points to remove return points that have range rates less than a threshold range rate.3. The method of claim 2 , further comprising:accumulating, using the one or more processors, the filtered return ...

Radar apparatus and signal processing method

There is provided a radar apparatus. A derivation unit derives target information which is information relating to a target detected on the basis of a transmission signal of which a frequency changes with a predetermined cycle and a reception signal corresponding to a reflected wave coming from an object at which a transmission wave corresponding to the transmission signal is reflected. A determination unit determines reliability of the target information. A decision unit decides whether the detected target is true or false, based on the target information. The decision unit changes a method of deciding whether the target is true or false in accordance with a determination result of the reliability by the determination unit.

System and method for position tracking using edge computing

A tracking system includes a camera subsystem that includes cameras that capture vide of a space. Each camera is coupled with a camera client that determines local coordinates of people in the captured video. The camera clients generate frames that include color frames and depth frames labeled with an identifier number of the camera and their corresponding timestamps. The camera clients generate tracks that include metadata describing historical people detections, tracking identifications, timestamps, and the identifier number of the camera. The camera clients send the frames and tracks to cluster servers that maintain the frames and tracks such that they are retrievable using their corresponding labels. A camera server queries the cluster servers to receive the frames and tracks using their corresponding labels. The camera server determines the physical positions of people in the space based on the determined local coordinates.

TRACK ASSOCIATOR

Disclosed here are system, apparatus, article of manufacture, method and/or computer program product embodiments for track association. An embodiment operates by receiving a first set of track identification data from a first tracking system. The first set of track identification data is associated with a global track identifier (GID). The first set of track identification data associated with the GID is broadcasted to the first tracking system and a second tracking system. A second set of track identification data is received from the second tracking system. The second set of track identification data identifies any tracks of the second tracking system that match the first set of track identification data. The GID is associated with the second set of track identification data. 1. A computer implemented method , comprising:receiving first track identification data from a first tracking system;transmitting the first track identification data to a second tracking system;determining that second track identification data of the second tracking system disagrees with the first track identification data; andin response to determining that the second track identification data disagrees with the first track identification data, transmitting to the first tracking system information pertaining to the second track identification data.2. The computer-implemented method of claim 1 , wherein the determining comprises:receiving the second track identification data from the second tracking system; andresponsive to receiving the second track identification data, determining that the second track identification data disagrees with the first track identification data.3. The computer-implemented method of claim 1 , wherein the determining comprises:monitoring the second tracking system for a response; anddetermining that the second track identification data disagrees with the first track identification data after a predetermined time period has elapsed without detecting a response from ...

MOTION TRACKING VIA BODY RADIO REFLECTIONS

A motion tracking system makes use of a number antennas to transmit and receive radio frequency signals that are reflected from objects (e.g., people) in the environment of the system, which may include one or more rooms of a building, the interior of a vehicle, etc., and may be partitioned, for example, walls or cloth sheets. In general, the objects in the environment include both fixed objects, such as chairs, walls, etc., as well as moving objects, such as but not limited to people. The system can track people, who may be moving around a room, or may be relatively stationary, for instance, sitting in a chair of lying in bed, but may nevertheless exhibit breathing motion that may be detected. The system may detect body or limb gestures made by the people in the environment, and detect physical activity including detection of falls. 1. A method for indoor localization using signal reflections from a moving body , the method comprising:emitting a transmitted signal comprising repetitions of a transmitted signal pattern from a transmitting antenna;receiving, at each receiving antenna of a set of receiving antennas, a received signal comprising reflections of the transmitted signal; processing the received signal to form successive patterns of reflections of the transmitting signal pattern from moving bodies, and', 'processing the successive patterns of reflections including retaining effects of direct reflections from said moving body and excluding at least some effects of multipath reflections from said moving body that are also reflected from at least one static object; and, 'for each received signal,'}determining a location of the body using a result of processing the successive patterns of reflections.2. The method of wherein claim 1 , for each receiving antenna claim 1 , excluding multipath reflections includes identifying a direct reflection from the moving body claim 1 , and identifying indirect reflections from the moving body that also reflect from the at ...

Detecting roadway targets across beams

The present invention extends to methods, systems, and computer program products for detecting targets across beams at roadway intersections. Embodiments of the invention include tracking a target across a plurality of beams of a multiple beam radar system in a roadway intersection and updating track files for targets within a roadway intersection. Returns from a plurality of radar beams monitoring a roadway intersection are divided into range bins. Identified energy in the range bins is used to compute the position of targets within a roadway intersection. When the position of a target is computed, it is determined if the position is a new position for an existing target or if the position is the position of a new target.

COORDINATED DETECTING OF OBJECTS IN AN AIRSPACE

The present disclosure is concerned with a method for searching a search area, a missile, and a missile formation. According to the method, in each case at least one radar is arranged in at least two missiles, wherein the method involves: determining a total search time for searching the search area, splitting the search area into at least two search subareas, and searching the at least two search subareas by means of the respective radar of the at least two missiles. The at least two missiles carry out the searching cooperatively, wherein the search subareas are chosen such that a detection probability is maximized. 112. A method for searching a search area (S) , wherein at least one radar (R) is arranged in at least two missiles (AC , AC) , comprising the steps of:determining a total search time for searching the search area (S);{'b': 1', '2, 'splitting the search area into at least two search subareas (TS, TS); and'}searching the at least two search subareas by way of the respective radar of the at least two missiles, wherein the at least two missiles carry out the searching cooperatively;wherein the search subareas are chosen such that a detection probability (PD) is maximized.2. The method according to claim 1 , wherein the detection probability is maximized on the basis of an object of prescribed size at a prescribed distance.3. The method according to claim 1 , wherein the detection probability for the at least two search subareas is the same.4. The method according to claim 1 , wherein the total search time is prescribable or predefined.5. The method according to claim 1 , wherein the search subareas have substantially no overlap.6. The method according to claim 1 , wherein the search area is prescribable or alterable.7. The method according to claim 1 , wherein the splitting of the search area into search subareas changes according to the movement and/or the trajectory of the at least two missiles.8. The method according to claim 1 , wherein the splitting ...