СИСТЕМА И СПОСОБ ИНТЕГРАЦИИ БЕСПРОВОДНОЙ КОМПЬЮТЕРНОЙ СЕТИ В ТЕХНОЛОГИЮ ОПРЕДЕЛЕНИЯ МЕСТОПОЛОЖЕНИЯ

Беспроводное устройство связи, известное как мобильная станция (MS), содержит обычную систему беспроводной связи и дополнительно содержит подсистему связи беспроводной компьютерной сети и может также включать в себя возможность позиционирования с помощью глобальной системы позиционирования (GPS). Оператор MS может использовать любую или все эти подсистемы, чтобы определить текущее местоположение MS. MS предоставляются основанные на местоположении услуги на основе текущего местоположения MS, такие как информация о продажах, расписания, цены, карты и т.п. В типичном осуществлении множество точек доступа к компьютерной сети, или радиомаяков, распределены по всей географической области и используются для того, чтобы определять местоположение MS с достаточно высокой степенью точности. На основе текущего местоположения MS радиомаяки могут предоставлять основанные на местоположении услуги. Достигаемым техническим результатом является повышение точности определения местоположения мобильного устройства ...

СПОСОБ ОПРЕДЕЛЕНИЯ ЗАДЕРЖКИ СИГНАЛОВ НАВИГАЦИОННОЙ СПУТНИКОВОЙ СИСТЕМЫ В ИОНОСФЕРЕ

FIELD: navigation. SUBSTANCE: invention relates to satellite navigation and can be used for determining ionosphere signal delay of global navigation satellite systems by means of consumer`s double-frequency navigation equipment. x. For this purpose, determination of ionospheric delay is performed by solving system of equations written on differences of increments of phase pseudo-ranges on two carrier frequencies. EFFECT: technical result is improved accuracy of determining signal delay in ionosphere due to exclusion of code measurements and measuring phase pseudo-range on two carrier frequencies. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК G01S 19/04 (11) (13) 2 584 243 C1 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015110269/07, 23.03.2015 (24) Дата начала отсчета срока действия патента: 23.03.2015 (72) Автор(ы): Курносов Антон Сергеевич (RU), Фатеев Юрий Леонидович (RU) (45) Опубликовано: 20.05.2016 Бюл. № 14 2 5 8 4 2 4 3 R U (54) СПОСОБ ОПРЕДЕЛЕНИЯ ЗАДЕРЖКИ СИГНАЛОВ НАВИГАЦИОННОЙ СПУТНИКОВОЙ СИСТЕМЫ В ИОНОСФЕРЕ (57) Реферат: Изобретение относится к области спутниковой кодовых измерений и применения измерений навигации и может быть использовано для фазовой псевдодальности на двух несущих определения ионосферной задержки сигнала частотах. Для этого в способе определение глобальных спутниковых навигационных систем ионосферной задержки производится путем с помощью двухчастотной навигационной решения системы уравнений, составленной по аппаратуры потребителя. Технический результат разностям приращений фазовых состоит в повышении точности определения псевдодальностей на двух несущих частотах. 2 задержки сигнала в ионосфере за счет исключения ил. Стр.: 1 C 1 C 1 Адрес для переписки: 660074, г. Красноярск, ул. Киренского, 26, СФУ, отдел правовой охраны и защиты интеллектуальной собственности (ОПОиЗИС) 2 5 8 4 2 4 3 (56) Список документов, цитированных в отчете о поиске: RU2208809 C1,20.07.2003 ...

СПОСОБ СЛЕЖЕНИЯ ЗА ПОДВИЖНЫМ УСТРОЙСТВОМ, ПОДВИЖНОЕ УСТРОЙСТВО И СИСТЕМА ДЛЯ ОБРАБОТКИ ДАННЫХ СЛЕЖЕНИЯ

Использование: в следящих системах. Коммуникационная сеть, которая отслеживает местонахождения подвижных объектов, пользующихся этой сетью. При подаче электропитания подвижные объекты определяют свое текущее местонахождение по сигналам, передаваемым, к примеру, спутниками, висящими над ними. Затем они направляют в сеть информационные связные сообщения, описывающие их местонахождение. Сеть запоминает эти местонахождения и возвращает информационные сообщения, которые описывают границы, окружающие местонахождения подвижных объектов. При этом подвижные объекты периодически определяют текущее местонахождение по регулярному расписанию. Если текущее местонахождение объектов оказывается за пределами заранее предписанных границ, то они направляют в сеть другие информационные сообщения о местонахождении, обновляя данные о местонахождении, сохраняемые в сети, и, принимая задание новой границы, что является техническим результатом. 5 с. и 23 з. п. ф-лы, 11 ил.

СПОСОБ КОНТРОЛЯ РАБОТОСПОСОБНОСТИ НАВИГАЦИОННОЙ АППАРАТУРЫ ПОТРЕБИТЕЛЯ СПУТНИКОВОЙ РАДИОНАВИГАЦИОННОЙ СИСТЕМЫ ВОЗДУШНОГО СУДНА

Изобретение относится к области радиотехники и предназначено для контроля работоспособности навигационной аппаратуры потребителя (НАП) спутниковой радионавигационной системы (СРНС) воздушного судна (ВС). Технический результат изобретения заключается в повышении вероятности правильного контроля работоспособности НАП СРНС. Сущность изобретения заключается в том, что решение о неработоспособности НАП СРНС вырабатывается в результате выявления несоответствия расстояний между двумя контрольными точками, определяемыми с использованием НАП СРНС с одной стороны и инерциальной навигационной системы (ИНС) с другой стороны в контрольные моменты времени tiи ti-1на протяжении полета ВС. Это позволяет снизить зависимость вырабатываемого решения от накопленной ошибки измерений ИНС и, как следствие, повысить вероятность правильного контроля работоспособности НАП СРНС. 1 ил.

Способ и устройство определения угловой ориентации летательных аппаратов

FIELD: radio equipment. SUBSTANCE: group of inventions relates to radio engineering and can be used to determine angular orientation of aircraft in space and on plane. In the method, determination of angular orientation of aircrafts is carried out using optimized spatial filtration when receiving signals of spacecrafts (SC) of global navigation satellite system (GNSS), which is based on a criterion of minimum output power. Method differs from known by calculation of reference phase differences Δϕ ref . Values Δϕ ref are determined from the difference of signals of two adaptive antenna arrays (AAA), wherein amplitude-phase shift introduced by each AAA is taken into account. To this end, the calculated phase differences take into account the values of the weight coefficients vector (WCV) of the corresponding AAA. Elimination of contradiction in implementation of adaptive antenna system related to simultaneous performance of spatial filtration of aircraft noise and angular orientation by replacement of M antenna elements on M AAA. Device for determining aircraft angular orientation, realizing the method, comprises M identical antennae from N antenna elements, M ≥ 3, N ≥ 2, a reference signal generation unit, a clock generator, S correlators, S analysis units, S + 1 switches, a correlator initial setting unit, S subtraction units, a memory unit, first and second calculators-generators, a decision unit, a control unit, a display unit, three input setting buses, a radio navigator, connected to each other in a certain manner. EFFECT: technical result is high noise immunity to deliberate interference. 2 cl, 18 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 740 606 C1 (51) МПК G01S 5/02 (2010.01) G01S 19/04 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01S 5/02 (2020.08); G01S 5/0263 (2020.08); G01S 19/04 (2020.08) (21)(22) Заявка: 2020117700, 18.05.2020 (24) Дата начала отсчета срока действия патента: Дата ...

СИСТЕМА И/ИЛИ СПОСОБ ДЛЯ ОБНАРУЖЕНИЯ СИГНАЛОВ GNSS

... 1. Способ, содержащий: ! детектирование фазы первого кода в первом периодически повторяющемся псевдослучайном закодированном сигнале, принятом от первого космического аппарата (SV) в опорном местоположении; и ! определение диапазона поиска фазы кода для детектирования фазы второго кода во втором периодически повторяющемся псевдослучайном закодированном сигнале, принятом от второго SV в упомянутом опорном местоположении на основе, по меньшей мере, частично упомянутой продетектированной фазы кода упомянутого первого принятого сигнала, оцененного азимутального угла для упомянутого первого SV из упомянутого опорного местоположения и оцененного азимутального угла для упомянутого второго SV из упомянутого опорного местоположения. ! 2. Способ по п.1, причем упомянутый диапазон поиска фазы кода основан, по меньшей мере, частично на оцененном угле возвышения для упомянутого первого SV из упомянутого опорного местоположения и оцененном угле возвышения для упомянутого второго SV из упомянутого опорного ...

СПОСОБ ОПРЕДЕЛЕНИЯ ПОЛОЖЕНИЯ ПУТЕМ СШИВАНИЯ ИЗМЕРЕНИЙ

... 1. Способ оценивания положения устройства мобильной связи, содержащий этапы, на которых ! задают начальное состояние фильтра определения положения посредством приближенного положения, и ! обновляют фильтр определения положения посредством первого набора измерений, полученного в течение первого периода измерения из первого поднабора опорных станций, причем упомянутый первый поднабор включает в себя менее трех разных опорных станций, ! обновляют фильтр определения положения посредством второго набора измерений, полученного в течение второго периода измерения из второго поднабора опорных станций, и ! определяют оценку положения для устройства мобильной связи на основании обновленного фильтра определения положения. ! 2. Способ по п.1, в котором фильтр определения положения является фильтром Калмана. ! 3. Способ по п.1, в котором второй поднабор включает в себя менее трех разных опорных станций. ! 4. Способ по п.1, в котором первый поднабор и второй поднабор включают в себя менее трех разных ...

Dreidimensionales Positionsbestimmungssystem auf Funk- und Lichtbasis

... 3-D-Positionsbestimmungssystem auf Funk- und Lichtbasis mit: einem stationären integrierten Funk-Sendeempfänger/Lasersender (RTR_LT) mit Selbstpositionsbestimmung, der dazu ausgelegt ist, eine erste Vielzahl von externen Funksignalen zu empfangen, dazu ausgelegt ist, seine Positionskoordinaten auf der Basis der ersten Vielzahl von empfangenen externen Funksignalen zu ermitteln, dazu ausgelegt ist, mindestens ein internes Funksignal auszusenden; und dazu ausgelegt ist, mindestens einen Laserstrahl auszusenden; und mindestens einem mobilen integrierten Funkempfänger/Laserdetektor (RR_LD), der dazu ausgelegt ist, eine zweite Vielzahl von externen Funksignalen zu empfangen, dazu ausgelegt ist, das mindestens eine interne Funksignal, das vom stationären integrierten RTR_LT mit Selbstpositionsbestimmung ausgesandt wird, zu empfangen, dazu ausgelegt ist, den mindestens einen Laserstrahl, der vom integrierten RTR_LT mit Selbstpositionsbestimmung erzeugt wird, zu erfassen, und dazu ausgelegt ist ...

Positionsmessergebnisse einer Vermessungsvorrichtung unter Verwendung eines Neigungssensors

Ein Vermessungsgerät umfasst eine Antenne, um ein Positionsbestimmungssignal zu empfangen. Das Vermessungsgerät umfasst ferner einen Neigungssensor, um eine Neigungsmessung einzuholen, die einen Neigungsgrad des Vermessungsgeräts angibt. Das Vermessungsgerät umfasst ferner einen Prozessor, um eine Positionsmessung aus dem Positionsbestimmungssignal zu erzielen und einen Genauigkeitsgrad der Positionsmessung basierend auf der Neigungsmessung zu bestimmen.

Improvements in or relating to radio navigation systems

... 685,802. Indicating-apparatus. SPERRY CORPORATION. Dec. 1, 1950 [Dec. 1, 1949], Ne. 29459/50. Class 106 (iv). [Also in Group XL (c)] In order to determine on an aircraft its height h above a ground radio beacon, the elevation a of the aircraft from the beacon and its slant distance s therefrom are determined as voltages (see Group XL (c)) which are converted to shaft rotations by servos 57 and 71 controlling a mechanical computer which solves the equation h=s sin . The elevation servo 57 is geared to a toothed sector 99 by a pinion 89 which sets the radial arm 95 at an angle a and the distancemeasuring servo 71 is geared to a lead-screw 93 which advances the assembly 101 along the arm a distance proportional to s, the assembly 101 being slidable in a slotted horizontal member 103 provided at one end with a rack 105 constrained to move vertically only so that the angular rotation of pinion 107 which meshes with the rack 105 is proportional to h and this rotation is displayed on a dial and ...

METHOD AND APPARATUS FOR PREDICTING THE POSITION OF A SATELLITE IN A SATELLITE BASED NAVIGATION SYSTEM

A data aquisition unit, system and method for geophysical data.

A data aquisition unit, system and method for geophysical data

A data aquisition unit, system and method for geophysical data.

A data acquisition unit, system and method for geophysical data.

A data aquisition unit, system and method for geophysical data.

PROCEDURE AND SYSTEM FOR THE ACTUALIZATION OF GEOGRAPHICAL DATA BASES

PROCEDURE AND SYSTEM FOR THE EXECUTION OF THE DETERMINATION OF THE POSITION OF A DEVICE

POSITIONING USING A REFERENCE STATION

PROCEDURE AND SYSTEM FOR DELIVERING VIRTUAL ONE REFERENCE ACT ION DATA

POSITIONING ON SATELLITE BASIS

AVAILABILITY OF CARRIER PHASE MEASUREMENTS ON REQUEST FOR POSITIONING ON SATELLITE BASIS

DISSOLUTION OF MAGNETIC DIPOLE AMBIGUITY WITH POSITION PURSUIT MEASUREMENTS

MEASUREMENT CORRECTIONS ON PHASE BASIS

A method for creating a network positioning system (NPS)

System and method for integration of wireless computer network in position determining technology

Apparatus and method for CDMA Time Pseudolite for repeater identification

A data acquisition unit system and method for geophysical data

A system and method for performing object association using a location tracking system

TIME AND FREQUENCY SYNCHRONISATION OF EQUIPMENT AT DIFFERENT LOCATIONS.

REAL-WORLD PERSPECTIVE DISPLAY FOR USE WITH AN INDEPENDENT AIRCRAFT LANDING MONITOR SYSTEM

RTK-GPS SURVEY SYSTEM

The invention is directed to an RTK-GPS survey system. The survey system includes a server (9) in an IP-VPN communication network 10 for establishing communications between base stations (16 and 17) that transmit correction data and a rover station 15 that receives the correction data. Each satellite positioning device constituting a base station and a rover station includes at least a satellite positioning unit (11) that receives radio waves from artificial satellites, a communication unit (12) that performs a communication between the satellite positioning device, and a control unit (13) that controls the satellite positioning unit (11) and the communication unit (12). The control unit (13) of the rover station 15 can receive interference information registered in the control unit (13) of each satellite positioning device of the base stations (16 and 17), and select a base station that transmits most appropriate correction data among the plural base stations.

HEIGHT GENERATING SATELLITE NAVIGATION SYSTEM

A vehicle satellite navigation system is provided for generating a standard height for a geographic location where the vehicle is located. The system may include a satellite receiver (100) that is capable of generating position data as a function of signals received from navigation satellites. The position data may include a longitude, a latitude, and a ellipsoidal height. The system may store undulation values for a geographic area in an undulation grid model (146) or in a digital map. The system may determine an approximate undulation value for the position, and calculate the standard height value for the position.

HIGH ACCURACY SURVEY-GRADE GIS SYSTEM

SURVEYING PROCEDURE AND SYSTEM FOR A HIGH-RISE STRUCTURE

The invention concerns a urveying procedure for a structure (1'), more particularly a high-rise building, to be erected which has an ideal axis (a) oriented relative to the gravity vector. At least three reference points (A5', B5', C5') are defined by receivers (AA, BB, CC) of a satellite-based positioning system (2), on the uppermost construction level (E5) of the structure (1'). The position of .alpha.n electro-optical geodesic instrument (3) assigned to the structure (1') is determined relative to the three reference points (A5', B5', C5') and to a singular point (P5') of structure (1'). The tilt (.alpha.5) of a real line (a') developing from the ideal axis (a) under tilt effects acting on the structure (1; 1') is acquired gravimetrically, more particularly with a gravimetric tilt sensor (I5). A static coordinate system tied to ideal axis (a) is transformed to a coordinate sys.tau.em tied to real line (a') and depending dynamically on tilt (.alpha.5) , by adducing the at least three ...

METHOD AND APPARATUS FOR MEASURING DISPLACEMENT OF OBJECT USING GPS

The present invention is a method for measuring a distance between a GPS receiver installed in a floating body and a GPS satellite, subjecting this measured distance data to a moving averaging process, removing from the measured distance data, distance data corresponding to a distance to a satellite orbit to determine a variance of the GPS receiver, removing wind wave-induced noise from the data, then determining three linear equations that use three-dimensional coordinates of the GPS receiver as unknown numbers, based on variances relative to GPS satellites and an azimuth and an elevation of each GPS satellite, and then solving these simultaneous equations to determine displacement of the GPS receiver corresponding to its variation component quantities on three-dimensional coordinate axes.

Balise radioélectrique

Verfahren und Einrichtung zur Richtungsbestimmung unter Anwendung eines Bakensenders und eines Peilempfängers.

Sende-Empfangsanlage

Funkortungsanlage

Anlage zur drahtlosen Richtungsbestimmung auf Grund des Dopplereffektes

Anlage zur drahtlosen Richtungsbestimmung

Verfahren und Einrichtung zur relativen Entfernungsmessung zwischen zwei Stationen

Einrichtung zur Bestimmung der Zeitverzögerung zwischen zwei Impulssignalen

Such- und Folgeempfänger

DEVICE, SYSTEM AND METHOD OF COLLECTING GEOPHYSICAL DATA

СПОСОБ УГЛОВОЙ ОРИЕНТАЦИИ ОБЪЕКТА ПО СИГНАЛАМ СПУТНИКОВЫХ РАДИОНАВИГАЦИОННЫХ СИСТЕМ

Изобретение относится к области радионавигации, может быть использовано для определения угловой ориентации объектов по сигналам космических аппаратов глобальных навигационных спутниковых систем и направлено на повышение точности определения угловой ориентации объекта в условиях наличия систематической погрешности измерения фазовых сдвигов принимаемых сигналов. Указанный технический результат достигается предлагаемым способом, который обеспечивает определение угловой ориентации по результатам одного или нескольких разновременных измерений фазовых сдвигов сигналов п космических аппаратов (n>4). Способ реализуется подбором целочисленных неоднозначностей измеренных значений фазовых сдвигов, определением неизвестных значений ориентации объекта и разности группового времени запаздывания, исключением избыточных значений угловой ориентации путем проверки на соответствие априорным данным, проверкой оставшихся значений с использованием сигналов дополнительных космических аппаратов. Искомое значение ...

Geopositioning method using assistance data

Improvements in or relating to radio navigating systems

System of radionavigation

Omnidirectional radio beacon

System of radionavigation

SYSTEM AND METHOD FOR COMMUNICATING INFORMATION RELATED TO A GEOGRAPHICAL AREA

A system for communicating information relating to a geographical area includes a circuit for determining the location of a vehicle within a geographical area and for receiving and processing message information relevant to the geographical area. The system further includes a communication device for communicating both the location and message information to an operator of the vehicle. The location and message information may be further correlated with characteristics sampled at various locations within the geographical area.

Satellite search method and receiver using the same

A satellite time dynamic search method and a receiver implementing such a method are disclosed. In the present invention, a predetermined period of time is sampled into multiple time samples. The time samples are sieved according to a search result of a satellite selected from candidate satellites each time. By repeatedly doing so, the finally remaining time sample will approach a true satellite system time, and accordingly the candidate satellites converge to the most possible ones as to facilitate satellite search.

Rearview mirror with integrated microwave receiver

An inventive rearview mirror assembly is disclosed in which a microwave antenna is mounted so as to receive transmissions from one or more satellites through the front windshield of the vehicle. The microwave antenna may be tuned to receive satellite transmissions from a position identification system constellation of satellites, such as GPS or GLONASS. Additionally, the microwave antenna may be tuned to alternatively or additionally receive transmissions from at least one communication satellite, such as a CD radio satellite. In addition to the inventive rearview mirror assembly, an inventive electrical control system is disclosed that may be used as a navigation system, an electrochromic rearview mirror control system, a head lamp control system, a tire pressure monitoring and display system, a temperature sensing and display system, a vehicle compass system, a vehicle data recorder system, and/or a vehicle odometer verification system. In each of the above systems, new parameters are ...

Method of tracking at least one mobile unit comprising integrated radio/pseudolite transceiver and laser detector by utilizing stationary self-positioning radio transceiver and stationary laser transmitter

A method of tracking at least one mobile unit utilizing a radio and light based 3-D positioning system comprising a stationary self-positioning radio (pseudolite) transceiver, a stationary laser transmitter positioned in a location with known coordinates, a wireless link, and a display. The method comprises: (A) determining position coordinates of the stationary self-positioning radio (pseudolite) transceiver; (B) broadcasting at least one internal radio signal by using the self-positioning radio (pseudolite) transceiver via the wireless link; (C) generating at least one laser beam by using the stationary laser transmitter; (D) broadcasting at least one laser beam; (E) receiving a plurality of external radio signals, receiving at least one internal radio signal by using the wireless link, and detecting at least one laser beam by using integrated radio (pseudolite) transceiver/laser detector; (F) determining 3-D position coordinates of at least one mobile unit comprising the integrated radio ...

Pseudolite-augmented GPS for locating wireless telephones

Ground-based pseudolites support accurate determination of mobile receiver locations by broadcasting CDMA signals interleaved by a TDMA system. Pseudolites synchronize signal transmissions with an accurate timing reference, such as can be derived from GPS satellites. Adjacent pseudolites broadcast CDMA signals at different times, eliminating near-far signal interference between pseudolites. A mobile receiver, typically a cellular telephone, receives and enables determination of times of arrival (TOA) of the pseudolite signals. A location processor associated with the mobile receiver may access an internal database of pseudolite locations, or pseudolite location information may be encoded in pseudolite transmissions. The location processor uses pseudolite location information and TOA to determine mobile receiver location. The TDMA pseudolite-based system may augment the GPS to provide more accurate location information than is available from the GPS alone.

Direction finding system

Relative position detecting apparatus, and relative position detecting system

In a case in which three or more movable objects, each of those detecting the relative position with respect to another movable object, are able to communicate with each other: a reference movable object obtains observation data and transmits the observation data to non-reference movable objects; one non-reference movable object calculates the relative position with respect to the reference movable object by performing interferometric positioning using the observation data obtained by the observation data obtaining means and data including observation data received from the reference movable object, and also transmits data including an integer bias calculated as interferometric positioning results to another non-reference movable object and receives reliability determination results regarding the interferometric positioning; and the another non-reference movable object receives data including the integer bias from the one non-reference movable object and determines the reliability of the ...

GNSS RECEIVER ADAPTED TO FIX CROSS-GNSS DD AMBIGUITY

A Global Navigation Satellite System (GNSS) receiver for processing satellite signals with integer cross ambiguity resolution. The receiver includes an antenna assembly receiving signals from a set of GNSS satellites. The receiver includes a transceiver establishing a communication link with a spaced-apart GNSS receiver and receiving data from the spaced-apart GNSS receiver to make up a base station and rover pair performing DD techniques. The receiver includes a processor and a cross ambiguity fixing module provided by the processor executing code to generate an error correction. The receiver includes an estimator provided by the processor executing code to provide a geographical position solution by DD processing the data from the space-apart GNSS receiver and the signals from the set of GNSS satellites along with the error correction, which may provide a search space with more DD ambiguities or may address quarter or half cycle bias between receiver types.

Coordinate determining system

Radio navigation system

Sаtеllitе sеаrсh mеthоd аnd rесеivеr using thе sаmе

А sаtеllitе timе dуnаmiс sеаrсh mеthоd аnd а rесеivеr implеmеnting suсh а mеthоd аrе disсlоsеd. In thе prеsеnt invеntiоn, а prеdеtеrminеd pеriоd оf timе is sаmplеd intо multiplе timе sаmplеs. Тhе timе sаmplеs аrе siеvеd ассоrding tо а sеаrсh rеsult оf а sаtеllitе sеlесtеd frоm саndidаtе sаtеllitеs еасh timе. Ву rеpеаtеdlу dоing sо, thе finаllу rеmаining timе sаmplе will аpprоасh а truе sаtеllitе sуstеm timе, аnd ассоrdinglу thе саndidаtе sаtеllitеs соnvеrgе tо thе mоst pоssiblе оnеs аs tо fасilitаtе sаtеllitе sеаrсh.

ANTENNA PHASE CENTER COMPENSATION FOR ORBITAL ASSISTANCE DATA

A method, apparatus, and system are disclosed for providing modified orbital assistance data to a mobile station to determine its location using global navigation satellite system (GNSS). The modified orbital assistance data may include predicted orbital information for the GNSS satellites combined with antenna phase center offset data for one or more GNSS satellites. The antenna phase center offset data may indicate an offset distance from the center of mass of the GNSS satellite to a position on an antenna of the respective GNSS satellite. The modified orbital assistance data may be in an earth-centered earth-fixed (ECEF) frame of reference and the antenna phase center offset data may be in a body-centered frame of reference.

СПОСОБ ПРОВЕДЕНИЯ ГЕОДЕЗИЧЕСКИХ ИЗМЕРЕНИЙ И СИСТЕМА ДЛЯ ВЫСОТНЫХ СООРУЖЕНИЙ

Изобретение относится к технологии проведения геодезических измерений для высотного здания, подлежащего возведению, а также к системе для координатного преобразования для привязки и согласования, по меньшей мере, одного геодезического измерительного прибора. Техническим результатом изобретения является создание точной и надежной технологии геодезических измерений для каркаса любой высоты, подлежащего возведению, и особенно для высотных зданий, подвергаемых наклоняющему воздействию и с затрудненным использованием опорных точек на поверхности земли. По меньшей мере, три опорные точки задаются приемниками спутниковой системы глобального позиционирования на текущем самом верхнем уровне конструкции каркаса. Положение электронно-оптического геодезического инструмента, установленного на каркасе, определяется относительно трех опорных точек. Угол наклона реальной линии, развивающейся из воображаемой оси от наклоняющих воздействий на каркас, регистрируют с помощью гравиметрического датчика. Статическую ...

Anordnung zur digitalen Azimutmessung

Systeme und Verfahren zur Verbesserung eines Trägheitsnavigationssystems

Systeme und Verfahren zur Verbesserung eines Trägheitsnavigationssystems (INS) umfassen das Ausgeben einer mit dem Arbeitsgerät assoziierten Positionsinformation von dem INS, und das Einstellen des Arbeitsgeräts basierend auf einem Vergleich der Positionsinformation des Arbeitsgeräts mit einer gewünschten Position des Arbeitsgeräts. Das INS wird in regelmäßigen Abständen unter Verwendung von Fehlerabschätzungen, die von einem Kalman-Filter als Funktion von Positionsinformationen erzeugt wurden, neu initialisiert, wobei die Positionsinformationen von einer oder mehreren Positionierungs- (oder Mess-)vorrichtungen wie beispielsweise einem Fächerlaser, einer automatischen Totalstation (ATS), einem GNSS-Empfänger, oder einem bodenbasierten Funkentfernungsmesssystem stammen, um eine Abweichung der Positionsinformation zu korrigieren, die durch inhärente Eigenschaften des INS verursacht werden können.

Verfahren zur Konfiguration einer Geräteelektronik eines handgeführten Arbeitsgeräts

Verfahren zur Konfiguration einer Geräteelektronik eines handgeführten Arbeitsgeräts (10), die Sensormittel (20) zur Erfassung von Messdaten, eine Steuereinheit (50) zur Messdatenverarbeitung und zur Steuerung von Gerätefunktionen und eine Datenübertragungseinrichtung (30) aufweist, wobei eine Datenübertragung zwischen der Datenübertragungseinrichtung (30) und einer Auswertestelle (62) über ein Mobilfunknetz erfolgt, wobei – in einem ersten Schritt (71) wenigstens die Steuereinheit (50) und die Datenübertragungseinrichtung (30) der Geräteelektronik zu einem in einem Steuerprogramm als Zeitparameter hinterlegten Zeitpunkt aus einem Ruhemodus (70) geweckt und aktiviert werden, – die Datenübertragungseinrichtung (30) in einem nachfolgenden zweiten Schritt (72) in eine drahtlose, digitale Datenkommunikation mit einem Mobilfunknetz tritt und die über das Mobilfunknetz eine von der Auswertestelle (62) bereitgestellte Konfigurationsdatei abruft, – die Datenübertragungseinrichtung (30) in einem ...

RTK-GPS-Vermessungssystem

Ein RTK-GPS-Vermessungssystem zum Vermessen eines Objekts enthält zumindest eine Satellitenpositionierungsvorrichtung als eine Basisstation (15), die zum Senden von Korrekturdaten ausgebildet ist, mehrere Satellitenpositionierungsvorrichtungen als Erkundungsstationen (16, 17), zum Empfangen der Korrekturdaten ausgebildet sind, und einen in einem IP-VPN-Kommunikationsnetzwerk vorgesehenen Server (9) zum Herstellen einer Kommunikation zwischen der Satellitenpositionierungsvorrichtung als der Basisstation und den mehreren Satellitenpositionierungsvorrichtungen als den Erkundungsstationen, wobei jede der Satellitenpositionierungsvorrichtungen ein Satellitenpositionierungsteil (11) zum Empfangen einer Funkwelle von einem Satelliten, ein Kommunikationsteil (12) zum Durchführen einer Kommunikation zwischen jeder der Satellitenpositionierungsvorrichtungen und ein Steuerteil (13) zum Steuern des Satellitenpositionierungsteils und des Kommunikationsteils hat.

Verfahren und Anordnung zur genauen Ortsbestimmung eines elektromagnetisch abgeschirmten Ortes mittels Satelliten

Improved system for measuring distances by means of radiated waves

... 1,088,514. Radar. SOUTH AFRICAN INVENTIONS DEVELOPMENT CORPORATION. April 14, 1965 [April 20, 1964], No. 16046/65. Heading H4D. In order to measure the range of a station B at a station A, the stations transmit electromagnetic waves of respective frequencies f A , # B , # A ~# B being a relatively low frequency, station B forms a signal of frequency # A ~# B and compares it with the output of a local reference oscillator f RB of high stability to produce a control signal acting on frequency # B to establish a predetermined phase and frequency relationship between signals # A ~# B and # RB , and at station A a signal of frequency # A ~# B is derived and compared in phase with a reference signal of frequency # RA nominally the same as # RB . The transmission of signal frequency# A ~# B from B to A, as in Specification 811,762, is thereby avoided. In the embodiment # RB = # A ~# B ; signals # A ,# B are radiated by frequency modulation; a choice of frequencies # A .# B is available; light ...

Measuring system

... 1,147,553. Radio navigation. INTERNATIONAL STANDARD ELECTRIC CORP. 22 March, 1967 [31 March, 1966], No. 13457/67. Addition to 1,147,552. Heading H4D. The Specification describes a digital TACAN receiver, using the modulation crossover selector described in Specification and a basic counter system as described in the parent Specification 1,147,552. Thus the coarse 15 cycles/sec. modulation envelope is detected to produce a pulse train B, Fig. 2, defining the positive crossover points and a pulse train C defining the negative crossover points. The 15 cycle/sec. north reference pulses A are also detected. The fine 135 cycles/sec. modulation envelope is also detected to produce pulse trains indicating positive and negative crossover points. The 15 cycles/sec. crossover pulse trains B and C are fed to inputs 12 and 13, Fig. 1, of 15-cycle modulation crossover selector 18 and the 15- cycle north reference pulses A are fed to selector 18, to reset input of bi-stable circuit 16 and to a counter ...

Satellite radiodetermination

MOBILE POSITIONING

PROCEDURE AND DEVICE FOR TRANSMISSION WITH VARIABLE DATA RATE

HEIGHT GENERATING SATELLITE NAVIGATION SYSTEM

SYSTEM, METHOD, AND APPARATUS FOR GENERATING A TIMING SIGNAL

System and method for generating precise code based and carrier phase position determinations

Phase based measurement corrections

GNSS (Global Navigation Satellite System) Dynamic Kalman Filter Method In Autonomous Cooperation

Abstract The invention discloses a GNSS dynamic Kalman filter method in autonomous cooperation. The method comprises the following steps: calculating a double-difference observation value, calculating an observation equation, calculating a double-difference pseudo range observation value, calculating double-difference pseudo-range observation equations, calculating double-difference observation equations based on a pseudo-range and a carrier phase, listing the double-difference observation equations and performing Kalman filter calculation. According to the invention, receiver clock errors and satellite clock errors are eliminated by calculating double-difference observation values. Satellites with high elevation angles are called as the first choice of reference satellites, so that the accuracy of each double difference observation value is ensured. Pseudo-range measurement values corresponding to different stations and between satellites form a double-difference pseudo-range, and the ...

REAL-WORLD PERSPECTIVE DISPLAY FOR USE WITH AN INDEPENDENT AIRCRAFT LANDING MONITOR SYSTEM

TIME AND FREQUENCY SYNCHRONISATION OF EQUIPMENT AT DIFFERENT LOCATIONS

Method and apparatus for providing accurately synchronised timing signals at mutually distant locations employs a GPS or similar receiver at each location. These receivers are interconnected by a communications network, and exchange data over network to agree a common timing reference.

RELATIVE POSITIONING METHOD AND RELATIVE POSITIONING SYSTEM USING SATELLITE

METHOD FOR POSITION DETERMINATION WITH MEASUREMENT STITCHING

A mobile Communications device uses a method for determining position that involves a positioning filter, such as a Kalman filter, which is initialized with measurements from reference stations such as satellite vehicles and/or base stations which may be acquired during different epochs. Accordingly, the positioning filter may be used for position estimation without the need to first acquire at least three different signals during the same measurement epoch.

METHOD FOR POSITION DETERMINATION WITH MEASUREMENT STITCHING

SYSTEM AND METHOD FOR GNSS POSITION AIDED SIGNAL ACQUISITION

A Global Navigation Satellite System (GNSS) device, such as the Global Positioning System (GPS) device, uses satellite orbital position information from almanac and/or ephemeris data to change a search parameter, such as reducing the number of analyzed frequency bins or setting signal strength threshold, so that satellite signal acquisition times are reduced. An exemplary embodiment estimates an orbital position for at least one GNSS satellite based upon at least one of almanac data and ephemeris data, detects a signal emitted from the at least one GNSS satellite, and based upon the estimated orbital position information fo r the at least one GNSS satellite that is determined from the almanac data and the ephemeris data, adjusts at least one parameter used in the analysis of the detected signal.

SYSTEM AND METHOD FOR GNSS POSITION AIDED SIGNAL ACQUISITION

A Global Navigation Satellite System (GNSS) device, such as the Global Positioning System (GPS) device, uses satellite orbital position information from almanac and/or ephemeris data to change a search parameter, such as reducing the number of analyzed frequency bins or setting signal strength threshold, so that satellite signal acquisition times are reduced. An exemplary embodiment estimates an orbital position for at least one GNSS satellite based upon at least one of almanac data and ephemeris data, detects a signal emitted from the at least one GNSS satellite, and based upon the estimated orbital position information for the at least one GNSS satellite that is determined from the almanac data and the ephemeris data, adjusts at least one parameter used in the analysis of the detected signal.

A SYSTEM USING LEO SATELLITES FOR CENTIMETER-LEVEL NAVIGATION

Disclosed herein is a system for rapidly resolving position with centimeterlevel accuracy for a mobile or stationary receiver (4). This is achieved by estimating a set of parameters that are related to the integer cycle ambiguities which arise in tracking the carrier phase of satellite downlinks (5, 6). In the preferred embodiment, the technique involves a navigation receiver (4) simultaneously tracking transmissions (6) from Low Earth Orbit Satellites (LEOS) (2) together with transmissions (5) from GPS navigation satellites (1). The rapid change in the line-of-sight vectors from the receiver (4) to the LEO signal sources (2), due to the orbital motion of the LEOS, enables the resolution with integrity of the integer cycle ambiguities of the GPS signals (5) as well as parameters related to the integer cycle ambiguity on the LEOS signals (6). These parameters, once identified, enable real-time centimeter-level positioning of the receiver (4).

A DATA ACQUISITION UNIT, SYSTEM AND METHOD FOR GEOPHYSICAL DATA

СПОСОБ УГЛОВОЙ ОРИЕНТАЦИИ ОБЪЕКТА ПО СИГНАЛАМ СПУТНИКОВЫХ РАДИОНАВИГАЦИОННЫХ СИСТЕМ

Изобретение относится к области радионавигации, может быть использовано для определения угловой ориентации объектов по сигналам космических аппаратов глобальных навигационных спутниковых систем и направлено на повышение точности определения угловой ориентации объекта в условиях наличия систематической погрешности измерения фазовых сдвигов принимаемых сигналов. Указанный технический результат достигается предлагаемым способом, который обеспечивает определение угловой ориентации по результатам одного или нескольких разновременных измерений фазовых сдвигов сигналов n космических аппаратов (n>4). Способ реализуется подбором целочисленных неоднозначностей измеренных значений фазовых сдвигов, определением неизвестных значений ориентации объекта и разности группового времени запаздывания, исключением избыточных значений угловой ориентации путем проверки на соответствие априорным данным, проверкой оставшихся значений с использованием сигналов дополнительных космических аппаратов. Искомое значение ...

Surveying procedure and system for a high-rise structure

The invention concerns a surveying procedure for a structure (1'), more particularly a high-rise building, to be erected which has an ideal axis (a) oriented relative to the gravity vector. At least three reference points (A5', B5', C5') are defined by receivers (AA, BB, CC) of a satellite-based positioning system (2), on the uppermost construction level (E5) of the structure (1'). The position of an electro-optical geodesic instrument (3) assigned to the structure (1') is determined relative to the three reference points (A5', B5', C5') and to a singular point (P5') of structure (1'). The tilt (a5) of a real line (a') developing from the ideal axis (a) under tilt effects acting on the structure (1; 1') is acquired gravimetrically, more particularly with a gravimetric tilt sensor (I5). A static coordinate system tied to ideal axis (a) is transformed to a coordinate system tied to real line (a') and depending dynamically on tilt (a5) , by adducing the at least three reference points (A5' ...

Signal transmission system by phase difference, in particular light

Improvements with the whole of directing antennas

Radio beacons

Ambiguity Windowing in Communications Among Global Navigation System Satellite Receivers

A method of communicating corrections for information related to satellite signals among global navigation satellite system (GNSS) receivers is described. The method includes at a first GNSS device determining a component of position of a satellite. The component is then divided by a first value to thereby obtain an integer value and a remainder value, and the only the remainder value is transmitted from the first GNSS device to the second GNSS device. Knowing the first value, the second GNSS device calculates the component of position. 1. A method of reducing bandwidth required to transmit data from a first GNSS device to a second GNSS device comprising:at the first GNSS device determining data A for a satellite to be sent;dividing the data A by a dynamically selectable value M to thereby obtain an integer value I and a remainder value R; andtransmitting only the remainder value R from the first GNSS device to the second GNSS device.2. A method as in further comprising at the second GNSS device:dividing a value of different data B for the satellite by the first value M;discarding any remainder S resulting from the step of dividing the received value of different data B, to thereby obtain an integer value J; andadding the remainder value R transmitted from the first GNSS device to the integer J to thereby obtain data A at the second GNSS device.3. A method as in wherein the data to be transmitted from the first GNSS device to the second GNSS device comprises orbit data from the satellite.4. A method as in wherein the data to be transmitted from the first GNSS device to the second GNSS device comprises position data of the satellite.5. A method as in wherein the data to be transmitted from the first GNSS device to the second GNSS device comprises clock data from the satellite.6. A method as in wherein the data to be transmitted from the first GNSS device to the second GNSS device comprises carrier phase data.7. A method as in wherein the data to be transmitted from ...

GEOSPATIAL POSITIONING USING CORRECTION INFORMATION PROVIDED OVER CELLULAR CONTROL CHANNELS

Disclosed is a method of calculating a geospatial position by a mobile device by monitoring with the mobile device a first control channel from a first cell of a cellular communications system; monitoring with the mobile device a second control channel from a second cell of the cellular communications system at the same time as the first cellular control channel; receiving with the mobile device a first correction value sent over the first control channel; receiving with the mobile device a second correction value sent over the second control channel; receiving with the mobile device a signal from a global navigation satellite system; calculating with the mobile device the geospatial position based upon the signal from the global navigation satellite system and at least one of the first correction value and the second correction value. 120-. (canceled)21. A method of receiving geospatial positioning information , the method comprising:monitoring with a mobile device a first control channel from a first cell of a cellular communications system;determining from a past observation of a message on the first control channel of the first cell of the cellular communications system, a first time that a first correction value will be sent from the first control channel and a second time that a second correction value will be sent from a second control channel from a second cell of the cellular communication system;receiving with the mobile device the first correction value sent over the first control channel at the first time;receiving with the mobile device the second correction value sent over the second control channel at the second time;receiving with the mobile device a signal from a global navigation satellite system; andcalculating with the mobile device a geospatial position of the mobile device based upon the signal from the global navigation satellite system and at least one of the first correction value and the second correction value.22. The method of claim 21 , ...

CROWDSOURCING ATMOSPHERIC CORRECTION DATA

A system and method crowdsources atmospheric data from one or more rovers. The rovers calculate an estimated ionosphere delay value that indicates an adverse effect of ionospheric activity on signals received from the GNSS satellite. The values and identifiers may be transmitted to a server. The server utilizes the received information to generate an ionosphere map that reflects the magnitude of ionospheric delay at different locations. The ionosphere map is transmitted to one or more rovers. The rover determines if a pierce point associated with a selected GNSS satellite in view of the rover falls within the boundaries of the ionosphere map. If so, a corresponding ionosphere delay value is obtained utilizing the ionosphere map and then applied as a correction to account for ionospheric activity. In addition, the central server and/or rover may transmit the estimated ionosphere delay values and identifiers to other rovers. 1. A system , comprising: receive, from at least one rover, one or more estimated ionosphere delay values where each estimated ionosphere delay value is calculated for a corresponding global navigation satellite systems (GNSS) satellite in view of the rover, and wherein the estimated ionosphere delay value indicates an adverse effect of ionospheric activity on satellite signals transmitted by the corresponding GNSS satellite,', 'receive, from the at least one rover, coordinates of one or more pierce points and coordinates of the rover, wherein the coordinates of each pierce point indicate an intersecting location of the satellite signals transmitted by the corresponding GNSS satellite and the ionosphere, and', 'generate an ionosphere map that reflects the ionospheric activity, wherein the ionosphere map is generated utilizing the one or more estimated ionosphere delay values, the coordinates of the one or more pierce points received from the at least one rover, and the coordinates of the rover received from the at least one rover., 'a processor ...

INFORMATION PROCESSING APPARATUS, CALCULATION METHOD, AND POSITIONING SYSTEM

[Object] To calculate an integer bias according to a complicated calculation when an information processing apparatus switches reference stations. 1. An information processing apparatus comprising:a GPS reception unit configured to receive a radio wave from a satellite; anda processing unit configured to calculate an integer bias between a first reference station and the information processing apparatus on a basis of the radio wave from the satellite, whereinthe processing unit acquires an inter-reference-station integer bias between a second reference station different from the first reference station and the first reference station, andthe processing unit calculates an integer bias between the information processing apparatus and the second reference station on a basis of the integer bias between the first reference station and the information processing apparatus, and the inter-reference-station integer bias between the first reference station and the second reference station.2. The information processing apparatus according to claim 1 , further comprising:a communication unit configured to transmit a signal, whereinthe communication unit transmits a position of the information processing apparatus to a server that selects the second reference station.3. The information processing apparatus according to claim 2 , whereinthe second reference station is located at a position closest to the information processing apparatus among a plurality of reference stations.4. The information processing apparatus according to claim 1 , further comprising:a communication unit configured to receive a radio wave emitted from the second reference station, whereinthe processing unit selects the second reference station on a basis of reception strength of the radio wave emitted from the second reference station.5. The information processing apparatus according to claim 4 , whereinthe processing unit selects a reference station having greatest reception strength of a radio wave from a ...

Periodic Assistance Data Flow Control

An apparatus and method are provided for handling a periodic assistance session flow. Each periodic assistance data provision includes a session identification so that interlinked messages within the periodic assistance data delivery can be linked in the receiving end. Any modifications to the session are handled via the periodic session identification so that the changes to the assistance data delivery can be pointed to the right session.

RTK GNSS POSITIONING WITHOUT BASE STATIONS

Techniques described herein leverage MCMF functionality to provide a local RTK solution for a mobile device in which an initial highly-accurate location determination for the mobile device can be leveraged to generate RTK correction information that can be used to make subsequent, highly-accurate location determinations without the need for measurement information from an RTK base station. This RTK correction information can be applied to GNSS measurements taken by the mobile device over a long period of time while retaining the ability to produce highly-accurate location determinations for the mobile device. And additional correction information may be obtained and applied to the RTK correction information to extend this period of time even longer. 1. A method of Real-Time Kinematic (RTK) positioning of a mobile device , the method comprising:obtaining a first Global Navigation Satellite System (GNSS) measurement at a first time, wherein the first GNSS measurement comprises an ionosphere-free carrier phase combination at a first location of the mobile device;{'claim-text': ['the first GNSS measurement, and', 'the first location;'], '#text': 'determining an correction term based at least in part on:'}{'claim-text': 'the second GNSS measurement comprises an ionosphere-free carrier phase combination at a second location of the mobile device; and', '#text': 'obtaining a second GNSS measurement at a second time, wherein:'}determining the second location of the mobile device at the second time based at least in part on the second GNSS measurement and the correction term.2. The method of claim 1 , wherein the ionosphere-free carrier phase combination for the first GNSS measurement and the ionosphere-free carrier phase combination for the second GNSS measurement have the same ambiguity term.3. The method of claim 1 , wherein determining the second location of the mobile device at the second time is performed without receiving RTK measurement information at a time ...

SYSTEMS AND METHODS FOR DISTRIBUTED DENSE NETWORK PROCESSING OF SATELLITE POSITIONING DATA

A system for generating satellite positioning corrections includes a global correction module that generates a set of global pre-corrections based on modeling of global positioning error, a set of local correction modules that, for each local correction module of the set, takes input from a unique reference source and generates a set of local pre-corrections based on modeling of local positioning error; and a correction generator that generates a positioning correction from the set of global pre-corrections and the sets of local pre-corrections to correct a position of the mobile receiver. 1. A system for generating satellite positioning corrections for a mobile receiver comprising:a global correction module that receives, from a first set of reference sources, at least one of positioning code data and carrier phase data; wherein the positioning code data and carrier phase data from the first set of reference sources results from the reception of satellite signals from a first set of satellites at the first set of reference sources; wherein the global correction module generates a set of global pre-corrections;a set of local correction modules that receive, from a second set of reference sources, at least one of positioning code data and carrier phase data; wherein the positioning code data and carrier phase data from the second set of reference sources results from the reception of satellite signals from a second set of satellites at the second set of reference sources; wherein each local correction module of the set takes input from a unique reference source; wherein each local correction module of the set generates a set of local pre-corrections;a local modeler coupled to a plurality of the local correction modules; wherein the local modeler produces a spatial local model of the local pre-corrections; anda correction generator that generates a positioning correction of the mobile receiver from the set of global pre-corrections and the spatial local model.2. The ...

DISTRIBUTED SYNCHRONIZATION MECHANISM

Aspects of the present disclosure provide synchronization techniques for user equipment (UEs) that may be otherwise unable to support sidelink communication a synchronized UE and may have also lost global navigation satellite system (GNSS) and/or Evolved Node Base Stations (eNBs) as a synchronization source. In such instance, the unsynchronized UE may utilize reference signals (RS) from the data packets received from other UEs to track the timing and perform autonomous timing adjustments based thereon for synchronized packet transmission or reception. 1. A method for wireless communications , comprising:receiving, at an unsynchronized user equipment (UE), a data packet from a synchronized UE;determining an adjusted timing offset value based on reference signals included in the data packet from the synchronized UE;adjusting a timing of the unsynchronized UE based on the adjusted timing offset value to define an adjusted timing; andtransmitting or receiving, at the unsynchronized UE, a signal based on the adjusted timing.2. The method of claim 1 , wherein the unsynchronized UE was previously synchronized to one or both of a base station or a global navigation satellite system (GNSS) claim 1 , wherein losing communication with the one or the both of the base station and the GNSS triggers the adjusting of the timing based on the adjusted timing offset value.3. The method of claim 1 , wherein the unsynchronized UE lacks sidelink synchronization capability to support transmission and reception of sidelink synchronization signals.4. The method of claim 1 , wherein the data packet received from the synchronized UE includes a synchronization state of the synchronized UE claim 1 , wherein the synchronization state identifies whether the synchronized UE is synchronized to one or more of a global navigation satellite system (GNSS) claim 1 , a base station claim 1 , or a second synchronized UE.5. The method of claim 1 , wherein the signal transmitted by the unsynchronized UE ...

SYSTEM AND METHOD FOR GENERATING A PHASE SCINTILLATION MAP UTILIZED FOR DE-WEIGHTING OBSERVATIONS FROM GNSS SATELLITES

A system and method generates a phase scintillation map that is utilized to de-weight satellite signal observations from GNSS satellites. One or more base stations each assign an index value to one or more GNSS satellite in view, where the index value indicates an adverse effect of ionospheric scintillation on signals received from the GNSS satellite. The values and identifiers may be transmitted to a server. The server utilizes the received information to generate the phase scintillation map that may include one or more scintillation bubbles, wherein a location of each scintillation bubble is based on the received information. The phase scintillation map is transmitted to one or more rovers. The rover determines if a pierce point associated with a selected GNSS satellite in view of the rover falls within the boundaries of a scintillation bubble. If so, satellite signal observations from the selected GNSS satellite are de-weighted. 1. A system , comprising: receive, from at least one base station, one or more index values where each index value is assigned to a corresponding global navigation satellite systems (GNSS) satellite in view of the base station, wherein the index value indicates an adverse effect of ionospheric scintillation on satellite signals transmitted by the corresponding GNSS satellite,', 'receive, from the base station, coordinates of one or more pierce points, wherein the coordinates of each pierce point indicate an intersecting location of the satellite signals transmitted by the corresponding GNSS satellite and the ionosphere, and', 'generate a phase scintillation map that includes one or more scintillation bubbles, wherein a location of each scintillation bubble on the phase scintillation map is based on the one or more index values and the coordinates of the one or more pierce points received from the at least one base station., 'a processor and a memory, the processor configured to24. The system of claim 1 , wherein the index value assigned ...

BASE STATION TRANSMISSION OF GNSS CORRECTION DATA VIA BEACON FRAME

Techniques for transmitting global navigation satellite system (GNSS) correction data to a rover. GNSS signals are wirelessly received by a base station from one or more GNSS satellites. GNSS correction data is generated by the base station based on the GNSS signals. A beacon frame is formed by the base station to include a frame header, a frame body, and a frame check sequence (FCS). The frame body is formed to include the GNSS correction data. The beacon frame is wirelessly transmitted by the base station for receipt by the rover. The rover wirelessly receives the beacon frame. The GNSS correction data is extracted by the rover from the beacon frame. A geospatial position of the rover is calculated based on the GNSS correction data. 1. A method of transmitting global navigation satellite system (GNSS) correction data to a rover , the method comprising:wirelessly receiving, by a base station, GNSS signals from one or more GNSS satellites;generating, by the base station, the GNSS correction data based on the GNSS signals;forming, by the base station, a beacon frame comprising a frame header, a frame body, and a frame check sequence (FCS), wherein the frame body is formed to include the GNSS correction data;wirelessly transmitting, by the base station, the beacon frame for receipt by the rover;wirelessly receiving, by the rover, the beacon frame;extracting, by the rover, the GNSS correction data from the beacon frame; andcalculating, by the rover, a geospatial position of the rover based on the GNSS correction data.2. The method of claim 1 , wherein the beacon frame is a Wi-Fi beacon frame.3. The method of claim 1 , wherein forming the beacon frame includes:calculating the FCS based on the frame header and the frame body; andappending the FCS to the frame header and the frame body.4. The method of claim 1 , wherein forming the beacon frame includes:forming an element comprising an element ID, a length, and information containing the GNSS correction data.5. The method ...

PRECISE POINT POSITIONING METHOD AND POSITIONING APPARATUS AND RECORDING MEDIUM THEREOF

Precise point positioning (PPP) method and a PPP device are provided. The precise point positioning method includes obtaining a first satellite signal of a target satellite and a second satellite signal of a reference satellite. The first satellite signal and the second satellite signal are combined to eliminate a signal error and obtain a combined satellite signal. A smoothing process is performed on a code data of the combined satellite signal, to obtain a satellite positioning data for positioning process. The satellite positioning data includes modified code data and modified carrier-phase data. 1. A precise point positioning method , performed by a user equipment , comprising:obtaining a first satellite signal of a target satellite and a second satellite signal of a reference satellite;combining the first satellite signal and the second satellite signal to eliminate a signal error and obtain a combined satellite signal; andperforming a smoothing process on a code data of the combined satellite signal, to obtain a satellite positioning data for a positioning process, wherein the satellite positioning data comprises a modified code data and a modified carrier-phase data.2. The precise point positioning method of claim 1 , wherein the step of combining the first satellite signal and the second satellite signal to eliminate the signal error and obtain the combined satellite signal comprises:eliminating a first ionospheric error of the first satellite signal; andeliminating a second ionospheric error of the second satellite signal.3. The precise point positioning method of claim 2 , wherein the step of combining the first satellite signal and the second satellite signal to eliminate the signal error and obtain the combined satellite signal further comprises:using the first satellite signal and the second satellite signal to perform a between satellite single difference (BSSD) process to eliminate a common error.4. The precise point positioning method of claim 3 , ...

SYSTEM AND METHOD FOR SATELLITE POSITIONING

A system and method for determining a position of a mobile receiver including receiving a set of satellite observations, the set of satellite observations corresponding to a set of satellites; determining a state vector at each of a plurality of filters, wherein each filter determines the respective state vector based on a unique subset of the set of satellite observations; after a convergence criterion is satisfied, determining a converged state vector based on the respective integer ambiguity hypotheses; and determining the position of the mobile resolver based on the converged state vector. 1receiving, at the mobile receiver, a set of satellite observations, the set of satellite observations comprising code data and carrier phase data, the set of satellite observations corresponding to a set of satellites, wherein the set of satellites correspond to a plurality of satellite constellations, wherein the set of satellite observations are measured during a time period;correcting the set of satellite observations based on a location correction received from a set of reference stations;independently determining an integer ambiguity hypothesis at each of a plurality of Kalman filters, wherein each Kalman filter determines the respective integer ambiguity hypothesis based on a unique subset of the set of satellite observations, while each Kalman filter satisfies a continuing criterion;after a convergence criterion is satisfied, determining a converged integer ambiguity based on the respective integer ambiguity hypotheses; anddetermining the position of the mobile resolver based on the converged integer ambiguity.. A method for determining a position of a mobile receiver comprising: This application is a continuation of U.S. patent application Ser. No. 16/685,927 filed 15 Nov. 2019 which claims the benefit of US Provisional Application number 62,768,499, filed 16 Nov. 2018, which is incorporated in its entirety by this reference.This application is related to U.S. ...

DISTRIBUTED SYNCHRONIZATION MECHANISM

Aspects of the present disclosure provide synchronization techniques for user equipment (UEs) that may be otherwise unable to support sidelink communication a synchronized UE and may have also lost global navigation satellite system (GNSS) and/or Evolved Node Base Stations (eNBs) as a synchronization source. In such instance, the unsynchronized UE may utilize reference signals (RS) from the data packets received from other UEs to track the timing and perform autonomous timing adjustments based thereon for synchronized packet transmission or reception. 1. A method for wireless communications , comprising:receiving, at an unsynchronized user equipment (UE), a data packet from a synchronized UE;determining an adjusted timing offset value based on reference signals included in the data packet from the synchronized UE;adjusting a timing of the unsynchronized UE based on the adjusted timing offset value to define an adjusted timing; andtransmitting or receiving, at the unsynchronized UE, a signal based on the adjusted timing.2. The method of claim 1 , wherein the unsynchronized UE was previously synchronized to one or both of a base station or a global navigation satellite system (GNSS) claim 1 , wherein losing communication with the one or the both of the base station and the GNSS triggers the adjusting of the timing based on the adjusted timing offset value.3. The method of claim 1 , wherein the unsynchronized UE lacks sidelink synchronization capability to support transmission and reception of sidelink synchronization signals.4. The method of claim 1 , wherein the data packet received from the synchronized UE includes a synchronization state of the synchronized UE claim 1 , wherein the synchronization state identifies whether the synchronized UE is synchronized to one or more of a global navigation satellite system (GNSS) claim 1 , a base station claim 1 , or a second synchronized UE.5. The method of claim 1 , wherein the signal transmitted by the unsynchronized UE ...

OBTAINING AND PROVIDING POSITIONING ASSISTANCE DATA

A method performed by a target device to obtain positioning assistance data from a location server is provided. The target device and the location server are operating in a wireless communications network. The target device transmits a request to the location server. The request is a request for positioning assistance data and provides first logical position information. The target device obtains positioning assistance data from the location server. The positioning assistance data is based on the first logical position information. When being associated with a second logical position, the target device transmits a request to the location server. The request requests for positioning assistance data and provides second logical position information. The target device obtains positioning assistance data from the location server. The positioning assistance data is based on the second logical position information. 1. A method performed by a target device to obtain positioning assistance data from a location server , wherein the target device and the location server are operating in a wireless communications network , and wherein the method comprises:transmitting, to the location server, a request for positioning assistance data and providing first logical position information,obtaining, from the location server, positioning assistance data, based on the first logical position information,when being associated with a second logical position, transmitting, to the location server, a request for positioning assistance data and providing second logical position information; andobtaining, from the location server, positioning assistance data, based on the second logical position information;wherein the first and second logical position information each refer to a respective identifier of a respective network entity associated with the target device, and a base station Identity, ID,', 'an evolved NodeB, eNB, ID,', 'a gNB ID,', 'a Transmission and Reception Point, TRP, ID,', 'a ...

Methods for Provisioning of Reference Station Transfer Information for Global Navigation Satellite System Real Time Kinematics

A method performed by a wireless device () is disclosed. The method comprises sending (), to a network node (), a request for reference station transfer information. The method comprises obtaining () the reference station transfer information for at least one pair of satellites (). The method comprises determining () an integer ambiguity solution associated with a new reference station (B) based on the obtained reference station transfer information and an integer ambiguity solution associated with a current reference station (A). 1. A method performed by a wireless device , the method comprising:sending, to a network node, a request for reference station transfer information;obtaining the reference station transfer information for at least one pair of satellites; anddetermining an integer ambiguity solution associated with anew reference station based on the obtained reference station transfer information and an integer ambiguity solution associated with a current reference station.213.-. (canceled)14. A method performed by a network node , the method comprising:determining reference station transfer information for at least one pair of satellites associated with a current reference station of a wireless device and a new reference station of the wireless device; andsending the determined reference station transfer information to the wireless device.1526.-. (canceled)27. A wireless device , comprising:a receiver;a transmitter; and send, to a network node, a request for reference station transfer information;', 'obtain the reference station transfer information for at least one pair of satellites; and', 'determine an integer ambiguity solution associated with a new reference station based on the obtained reference station transfer information and an integer ambiguity solution associated with a current reference station., 'processing circuitry coupled to the receiver and the transmitter, the processing circuitry configured to28. The wireless device of claim 27 , ...

COLLECTION AND DISTRIBUTION OF TIMING INFORMATION IN A WIRELESS NETWORK

According to one configuration, an example communication system includes multiple wireless base stations such as a first wireless base station and a second wireless base station. The first wireless base station resides outdoors and receives timing information from remote radio hardware such as a satellite or other suitable resource; the second wireless base station resides indoors and is unable to receive the timing information from the satellite. The communication system includes a communication link or network connecting the second wireless base station to the first wireless base station. In one configuration, the second wireless base station receives the timing information from the first wireless base station over the network. The first wireless base station and the second wireless base station both use the timing information to synchronize wireless communications in the wireless network environment. 1. A method comprising:receiving timing information at a first wireless base station in a wireless network environment;distributing the timing information from the first wireless base station to a second wireless base station in the wireless network environment; andutilizing the timing information at the first wireless base station and the second wireless base station to synchronize wireless communications in the wireless network environment.2. The method as in claim 1 , wherein the timing information is wirelessly received by the first wireless base station from remote radio hardware.3. The method as in claim 2 , wherein the remote radio hardware is GPS (Global Positioning System) hardware that generates the timing information.4. The method as in claim 1 , wherein the timing information includes master clock information indicating a time of day.5. The method as in claim 1 , wherein the timing information includes an operating frequency in which to synchronize wireless communications transmitted by multiple base stations in the wireless network environment including ...

OFFSHORE GNSS REFERENCE STATION APPARATUS, OFFSHORE GNSS POSITIONING SYSTEM, AND METHOD OF GENERATING POSITIONING REFERENCE DATA OFFSHORE

An offshore GNSS reference station apparatus comprises: a processing resource and an underwater acoustic communications unit. The underwater acoustic communications unit comprises an underwater acoustic transducer, the underwater acoustic communications unit being arranged to cooperate with the processing resource in order to calculate a position. The apparatus also comprises a GNSS antenna site and an orientation determination unit operably coupled to the processing resource. The orientation determination unit is arranged to determine an orientation associated with the GNSS antenna site and the acoustic transducer of the underwater acoustic communications unit. 1. An offshore GNSS reference station apparatus comprising:a processing resource;an underwater acoustic communications unit comprising an underwater acoustic transducer, the underwater acoustic communications unit being arranged to cooperate with the processing resource in order to calculate, when in use, a position;a GNSS antenna site; andan orientation determination unit operably coupled to the processing resource, the orientation determination unit being arranged to determine an orientation associated with the GNSS antenna site and the acoustic transducer of the underwater acoustic communications unit.2. The apparatus according to claim 1 , further comprising:a wireless communications module operably coupled to the processing resource.3. The apparatus according to claim 2 , whereinthe calculated position is a position of the underwater acoustic transducer; andthe processing resource is arranged to calculate a vector extending between the position of the underwater acoustic transducer and the position of the GNSS antenna site, the vector being calculated using a predetermined lever arm offset and the orientation determined by the orientation determination unit.4. The apparatus according to claim 3 , wherein the processing resource is arranged to translate the position of the underwater acoustic transducer ...

Method and apparatus for generating and distributing satellite tracking information

A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-positioning-system satellite, computing an orbit model using the initial model parameters, wherein a duration of the orbit model is longer than a duration of the satellite-tracking data, comparing, for an overlapping period of time, the orbit model to the satellite-tracking data; and adjusting the orbit model to match the satellite tracking data for the overlapping period of time so as to form an adjusted orbit model. The adjusted orbit model comprises the long-term-satellite-tracking data.

GNSS REFERENCE FOR SUBSCRIBED PRECISIONS

This application discloses a GNSS reference apparatus having a vector error generator and a reference data server. The vector error generator generates one or more sequences of keyed intentional errors made confidential with confidential error keys, and then combines the sequences to generate a sequence of reference erroneous positions. The reference data server issues GNSS position-determination reference data based on the reference erroneous positions where the keyed intentional errors for at least one of the confidential sequences are reversible with confidential access to the corresponding confidential error key for determining a GNSS-based position. 1. A GNSS reference apparatus , including:a vector error generator to generate a sequence of reference erroneous positions by combining one or more sequences of keyed intentional errors, the keyed intentional error sequences made confidential with one or more confidential error keys, respectively; anda reference data server to issue GNSS position-determination reference data based on the reference erroneous positions to enable GNSS position determination where the keyed intentional errors for at least one of the confidential sequences are reversible with confidential access to a corresponding at least one of the confidential error keys.2. The GNSS reference apparatus of claim 1 , further including:a synthetic reference carrier phase processor to synthesize GNSS reference carrier phases for the reference erroneous positions from GNSS signals, and wherein the reference data server is configured to provide the synthesized GNSS reference carrier phases in the GNSS position-determination reference data.3. The GNSS reference apparatus of claim 1 , wherein:the GNSS position-determination reference data is composed to permit a GNSS rover having the confidential access to use the at least one confidential error key for the GNSS position determination.4. The GNSS reference apparatus of claim 1 , further including:a subscribed ...

SYSTEM AND METHOD FOR PROVIDING INFORMATION FROM REFERENCE STATIONS TO ROVER RECEIVERS IN A SATELLITE NAVIGATION SYSTEM

A navigation satellite system, one or more NSS reference station is set out for providing information to one or more rover receivers. The NSS reference station comprises a processing unit configured to determine one or more first range intervals representing first ambiguity windows based on estimated atmospheric effects, and determine one or more second range intervals representing a second ambiguity window smaller than each of the first ambiguity windows based on uncertainties of range measurements within a predetermined previous period. The NSS reference station further comprises a transmission unit configured to transmit, to the NSS rover receivers, first messages each comprising a modulo a first ambiguity window, and transmission of two first messages, to range measurement transmit between the NSS rover receiver, a plurality of second messages, each second message comprising a range measurement modulo one of the second ambiguity windows. 19.-. (canceled)10. A navigation satellite system , NSS , rover receiver for receiving information from a NSS reference station , the NSS rover receiver comprising: receive, from the NSS reference station, first messages each comprising a range measurement modulo a first range interval, wherein a time interval between transmission of each first message is equal to or less than a time duration of a predetermined previous time period; and', 'receive between reception of two first messages, from the NSS reference station, a plurality of second messages, each second message comprising a size of a second range interval, the time duration of the predetermined previous time period, and a range measurement modulo the second range interval, the second range interval being smaller than the first range interval; and, 'a reception unit configured toa processing unit configured to reconstruct the range measurement associated with each second message.11. Method for providing information from a navigation satellite system , NSS , reference ...

SYSTEM AND METHOD FOR DETERMINING GNSS POSITIONING CORRECTIONS

A system or method for generating GNSS corrections can include receiving satellite observations associated with a set of satellites at a reference station, determining atmospheric corrections valid within a geographical area; wherein geographical areas associated with different atmospheric corrections can be overlapping, and wherein the atmospheric corrections can be provided to a GNSS receiver when the locality of the GNSS receiver is within a transmission region of the geographical area. 2. The system of claim 1 , wherein the atmospheric effects are modelled as a function of least one of a pierce point or a pierce angle for satellite rays for each satellite of the set of satellites.3. The system of claim 1 , wherein the geographic region and the second geographic region are overlapping.4. The system of claim 3 , wherein the geographic region and the second geographic region overlap by at least 1° latitude or 1° longitude.5. The system of claim 1 , wherein the geographic region comprises an approximately 5° latitude by 5° longitude geographic region.6. The system of claim 1 , wherein the cloud computing server transmits the satellite corrections to a corrections server claim 1 , wherein the corrections server transmits the satellite corrections to the GNSS receiver based on the locality of the GNSS receiver.7. The system of claim 1 , wherein the residual correction comprises an interpolated residual determined from discrete points proximal the locality of the GNSS receiver.8. The system of claim 7 , wherein the interpolated residual comprises a residual interpolated between 2 claim 7 , 3 claim 7 , or 4 discrete points proximal the locality of the GNSS receiver.9. The system of claim 1 , wherein the discrete points are separated from neighboring discrete points by about 1° latitude or about 1° longitude.11. The method of claim 10 , wherein the fitting function is selected when the locality of the GNSS receiver is within a transmission region of the unique ...

SYSTEM AND METHOD FOR SATELLITE POSITIONING

A system and method for determining a position of a mobile receiver including receiving a set of satellite observations, the set of satellite observations corresponding to a set of satellites; determining a state vector at each of a plurality of filters, wherein each filter determines the respective state vector based on a unique subset of the set of satellite observations; after a convergence criterion is satisfied, determining a converged state vector based on the respective integer ambiguity hypotheses; and determining the position of the mobile resolver based on the converged state vector. 1. A method for determining a position of a mobile receiver comprising:receiving, at the mobile receiver, a set of satellite observations, the set of satellite observations comprising code data and carrier phase data, the set of satellite observations corresponding to a set of satellites, wherein the set of satellites correspond to a plurality of satellite constellations, wherein the set of satellite observations are measured during a time period;correcting the set of satellite observations based on a location correction received from a set of reference stations;independently determining an integer ambiguity hypothesis at each of a plurality of Kalman filters, wherein each Kalman filter determines the respective integer ambiguity hypothesis based on a unique subset of the set of satellite observations, while each Kalman filter satisfies a continuing criterion;after a convergence criterion is satisfied, determining a converged integer ambiguity based on the respective integer ambiguity hypotheses; anddetermining the position of the mobile resolver based on the converged integer ambiguity.2. The method of claim 1 , wherein the continuing criterion comprises an estimated residual value greater than an intermediate convergence threshold.3. The method of claim 1 , wherein each unique subset of the satellite observations comprises nonconsecutive satellite observations from the set ...

CONTROL OF WIRELESS FIDELITY ACCESS FOR 5G OR OTHER NEXT GENERATION NETWORK

Techniques for facilitating cellular or wireless fidelity access point selection are provided. In one example herein a method is provided comprising receiving, by a mobile device comprising a processor, first radio load data associated with a predicted radio load of a first channel of a first wireless device. Based on a first condition associated with the first radio load being determined to have been satisfied, the method can facilitate, by the mobile device, receiving second radio load data, indicative of a current radio load, from a second wireless device. Additionally, in response to a second condition associated with the current radio load being determined to have been satisfied, the method can utilize, by the mobile device, a second channel of the second wireless device for a communication. 1. A system , comprising:a processor; anda memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:receiving predicted radio load data associated with a predicted radio load of a channel of a first wireless communication device;in response to a first condition associated with the predicted radio load being determined to have been satisfied, receiving current radio load data, indicative of a current radio load, from a second wireless communication device; andin response to a second condition associated with the current radio load being determined to have been satisfied, performing an action.2. The system of claim 1 , wherein the operations further comprise:sending radio load request data, indicative of a radio load request, to the second wireless communication device.3. The system of claim 1 , wherein the second wireless communication device is a wireless fidelity device.4. The system of claim 1 , wherein the second wireless communication device is a wireless base station device associated with a cellular network.5. The system of claim 1 , wherein the channel is a first channel claim 1 , and wherein ...

Rover And Rover Measuring System

The invention provides a rover, which comprises a pole of which lower end indicates a point to be measured, a measurement auxiliary apparatus provided at a predetermined position of the pole, a direction detecting device integrally provided with the measurement auxiliary apparatus and for detecting a direction of the measurement auxiliary apparatus, and an object to be measured provided at a known distance from the lower end of the pole, 1. A rover comprising: a pole of which lower end indicates a point to be measured , a measurement auxiliary apparatus provided at a predetermined position of said pole , a direction detecting device integrally provided with said measurement auxiliary apparatus and for detecting a direction of said measurement auxiliary apparatus , and an object to be measured provided at a known distance from the lower end of said pole ,wherein said measurement auxiliary apparatus comprises a horizontal detecting unit which is supported so as to be rotatable around two shafts orthogonal to each other and detects the tilts in two axial directions, motors provided so as to rotate said shafts, encoders provided respectively on said shafts, and an arithmetic processing component for controlling said motors in such a manner that said horizontal detecting unit becomes horizontal based on a detection result from said horizontal detecting unit, wherein said encoders are configured to detect a rotation amount of each shaft in a case where said horizontal detecting unit becomes horizontal, and said arithmetic processing component is configured to calculate the tilts in said two axial directions based on the detection results from said encoders and to calculate a deviation of said object to be measured in two horizontal directions with respect to said point to be measured and a deviation in a vertical direction with respect to said known distance based on a calculation result, said known distance, and a tilting direction obtained from a direction detecting ...

SYSTEM AND METHOD FOR RECONVERGING GNSS POSITION ESTIMATES

A system and method for determining a receiver position can include determining a receiver position based on a set of satellite observations, determining the receiver position based on sensor measurements, determining a satellite observation discontinuity; based on the satellite observation discontinuity, determining a second receiver position. 1. A system for determining a receiver position , comprising:a positioning engine executing on a computing system collocated with a receiver, the positioning engine comprising:an observation monitor configured to receive a set of satellite observations from a set of global navigation satellites;an integer fixing module configured to determine an integer-valued carrier phase ambiguity associated with each satellite of the set of global navigation satellites;a reconvergence module configured to determine the cycle slip based on IMU data acquired during a phase lock loss period and a receiver position determined before the phase lock loss period; anda position filter configured to estimate a position of the receiver based on the satellite observations with the associated integer-valued carrier phase ambiguities removed.2. The system of claim 1 , further comprising a dead reckoning module configured to determine the position of the receiver based on the IMU data during the phase lock loss period.3. The system of claim 1 , wherein the integer fixing module is further configured to validate the integer-valued carrier phase ambiguity using a multistep validation process; wherein the integrity risk of the estimated position of the receiver depends on a validation step of the multi-step process.4. The system of claim 1 , wherein before the phase lock loss period claim 1 , the integrity risk of the estimated position is at most about 10per hour.5. The system of claim 1 , wherein the position engine is operable in a first mode and a second mode claim 1 , wherein a reconvergence time for the positioning engine to estimate the position of ...

METHOD AND APPARATUS TO DETERMINE RELATIVE LOCATION USING GNSS CARRIER PHASE

Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to determine proximate vehicles, for example, vehicles within a pre-designated range or within broadcast distance or otherwise geographically proximate, through the use of broadcast or other messages sent by the other vehicles, and to obtain GNSS carrier phase measurement data from the proximate vehicles wherein the shared carrier GNSS phase measurement data may be utilized to update the location(s) of proximate vehicles. 1. A method of updating a location of target vehicles using GNSS phase measurement data , comprising:determining a location of an ego vehicle;receiving, at the ego vehicle from a first proximate vehicle, a broadcast message comprising a first location of the first proximate vehicle and a vehicle ID of the first proximate vehicle;determining, based at least in part upon a distance between the location of the ego vehicle and the first location of the first proximate vehicle, that the first proximate vehicle is within a threshold range from the ego vehicle;obtaining GNSS phase measurement data for the first proximate vehicle;determining GNSS phase measurement data for the ego vehicle;determining a second location of the first proximate vehicle based, at least in part, upon the GNSS phase measurement data for the first proximate vehicle and the GNSS phase measurement data for the ego vehicle.2. The method of claim 1 , wherein the second location of the first proximate vehicle comprises a location of the first proximate vehicle relative to the ego vehicle.3. The method of claim 1 , wherein the second location of the first proximate vehicle comprises an absolute location of the first proximate vehicle.4. The method of claim 1 , wherein the broadcast message is a basic safety message (BSM) or a Cooperative Awareness Message (CAM).5. The method of claim 1 , further comprising requesting claim 1 , by the ego vehicle claim 1 , the GNSS phase measurement ...

METHOD AND APPARATUS TO DETERMINE RELATIVE LOCATION USING GNSS CARRIER PHASE

Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to determine location relative to a roadside unit (RSU) or other nearby point of reference. Vehicles within a pre-designated range or within broadcast distance or otherwise geographically proximate to a roadside unit, through the use of broadcast or other messages sent by the vehicles and/or the RSU may share carrier GNSS phase measurement data, wherein the shared GNSS carrier phase measurement data may be utilized to control and coordinate vehicle movements, velocity and/or position by the RSU and/or to determine location of each vehicle relative to the RSU and/or to other vehicles or determine the absolute location of each vehicle. An RSU may coordinate vehicle access to an intersection, manage vehicle speeds and coordinate or control vehicle actions such as slowing, stopping, and changing lanes or sending a vehicle to a particular location. 1. A method of interaction with a roadside unit , comprising:broadcasting, from a vehicle, location information and identification information;receiving, at the vehicle from the roadside unit, a request for periodic GNSS measurement data or sensor-based measurement data or a combination thereof;sending, from the vehicle to the roadside unit, the periodic GNSS measurement data or the sensor-based measurement data or the combination thereof;receiving, at the vehicle from the roadside unit, an at least one action request; andperforming the at least one requested action.2. The method of claim 1 , wherein the broadcast location information comprises latitude and longitude information.3. The method of claim 1 , wherein the broadcast location information comprises velocity and heading information.4. The method of claim 1 , further comprising broadcasting status information or priority information or a combination thereof.5. The method of claim 1 , wherein the periodic GNSS measurement data comprises phase offset information for at ...

METHOD AND SYSTEM FOR SHARING CONVERGENCE DATA

Systems and methods for sharing convergence data between GNSS receivers are disclosed. Convergence data received at a GNSS receiver via a communication connection may be utilized to determine a position of the GNSS receiver. 120.-. (canceled)21. A method for determining a position of a vehicle , the method comprising:receiving, at a first Global Navigation Satellite System (GNSS) receiver coupled to a first vehicle, GNSS signals from a plurality of GNSS satellites;sending, using a first wireless communication transceiver coupled to the first vehicle, a request for convergence data, the request sent to a second wireless communication transceiver coupled to a second vehicle, the convergence data generated at the second vehicle using correction data from one or more base stations;receiving, using the first wireless communication transceiver, the convergence data from the second wireless communication transceiver; anddetermining the position of the first vehicle using the GNSS signals from the plurality of GNSS satellites and the convergence data.22. The method of wherein the first vehicle is moving while the position of the first vehicle is determined.23. The method of further comprising:determining that the second vehicle is within a predetermined distance of the first vehicle; and thereaftersending the request for convergence data to the second wireless communication transceiver.24. The method of further comprising:determining that the convergence data was generated less than a threshold length of time from a current time; and thereafterdetermining the position of the first vehicle.25. The method of wherein the convergence data comprises at least one of correction bias errors estimated by a second GNSS receiver coupled to the second vehicle claim 21 , or correction data refined using the correction bias errors estimated by the second GNSS receiver.26. The method of wherein the correction bias errors comprise adjustments to at least one of orbit models or satellite ...

System and Method for Integer-Less GNSS Positioning

A system for tracking a state of a GNSS receiver uses a subset of the measurements of satellite signals selected to avoid the need for intermediate integers ambiguity estimate. The system selects the subset of measurements for the state tracking such that each measurement in the selected subset of measurements is formed by a weighted combination of multiple different measurements from the set of measurements. The system uses a probabilistic state estimator that tracks the state of the GNSS receiver using a probabilistic motion model subject to noise and a probabilistic measurement model relating the selected subset of the measurements of satellite signals to the current state of the receiver. 1. A system for tracking a state of a receiver of a global navigational satellite system (GNSS) , comprising:an input interface to accept motion data indicative of a change of a state of the receiver and measurements of satellite signals including a combination of carrier signals and code signals transmitted from a set of GNSS satellites, wherein a measurement for each satellite signal includes at least a single difference measurement of a satellite signal to represent a relative position of the receiver of the satellite signal with respect to a position of a satellite transmitting the satellite signal subject to integer ambiguity of the carrier signal of the satellite and noise, such that all possible measurements for each satellite signal at a current time step form a set of measurements;a memory configured to store a motion model transitioning a previous state of the receiver to a current state of the receiver according to the motion data, wherein the motion model is a probabilistic model subject to process noise, to store a measurement model relating a subset of the measurements of satellite signals to the current state of the receiver, wherein the size of the subset of measurements is less than the size of the set of measurements, and wherein the measurement model is a ...

INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD

Provided is an information processing apparatus intended to address problems in which positioning devices simply equipped with a plurality of antennas will fail to perform the carrier positioning. The information processing apparatus includes a receiving unit having a plurality of antennas located at second positions (Pa, Pb) and capable of receiving a carrier wave transmitted from a satellite, and a processing unit configured to perform positioning of a set first position (Po) on the basis of second phase information obtained by correcting first phase information of carrier waves respectively received by a plurality of the antennas. 1. An information processing apparatus comprising:a receiving unit including a plurality of antennas capable of receiving a carrier wave transmitted from a satellite; anda processing unit configured to perform positioning of a set first position on a basis of first phase information of carrier waves respectively received by a plurality of the antennas.2. The information processing apparatus according to claim 1 ,wherein the processing unit corrects each piece of the first phase information corresponding respectively to a plurality of the antennas as if the carrier wave is received at the first position, andperforms positioning of the first position on a basis of a plurality of pieces of second phase information in which respective pieces of the first phase information are corrected.3. The information processing apparatus according to claim 2 ,wherein, in a case of correcting the first phase information of a carrier wave received by one antenna among a plurality of the antennas,the processing unit corrects the first phase information on a basis of a first distance between the first position and a second position corresponding to the one antenna and a positional relationship between the first position, the second position, and the satellite that has transmitted the received carrier wave.4. The information processing apparatus according to ...

Reducing Time and Increasing Reliability of Ambiguity Resolution in GNSS

A first plurality of differences (first differences or second differences) of carrier phase measurements of global navigation satellite system (GNSS) signals corresponding to a first measurement epoch is received. A plurality of differences of carrier phase ambiguities of the first plurality of differences of carrier phase measurements is resolved. A first fixed position of the rover is computed. A first plurality of sub-corrections is computed based at least in part on the first fixed position of the rover, a position of the base, a position of each specific GNSS satellite, and the first plurality of differences of carrier phase measurements. The first plurality of sub-corrections is then used to reduce the processing time for ambiguity resolution of carrier phase measurements in subsequent measurement epochs. The sub-corrections can be smoothed, aged, or smoothed and aged. 1. A method for processing global navigation satellite system (GNSS) signals , the method comprising the steps of:receiving a first plurality of first differences of carrier phase measurements, wherein the first plurality of first differences of carrier phase measurements is based at least in part on GNSS signals received by a rover from a first plurality of GNSS satellites at a first measurement epoch and GNSS signals received by a base from the first plurality of GNSS satellites at the first measurement epoch;resolving a plurality of first differences of carrier phase ambiguities of the first plurality of first differences of carrier phase measurements;computing a first fixed position of the rover, wherein the first fixed position of the rover is based at least in part on the plurality of first differences of carrier phase ambiguities of the first plurality of first differences of carrier phase measurements; andcomputing a first plurality of sub-corrections, wherein the first plurality of sub-corrections is based at least in part on the first fixed position of the rover, a position of the base ...

Method and system for performing precise point positioning (ppp) ambiguity resolution using gnss triple frequency signals

Methods and systems for performing Precise Point Positioning (PPP) ambiguity resolution using Global Navigation Satellite Systems (GNSS) triple frequency signals are described. In an embodiment, the method may include computing, using a processing device, an L1/L2 or L2/L5 wide-lane fractional bias model, in which the bias is split into one direction-independent and three direction-dependent bias components for each satellite. Additionally, the method may include resolving, using the processing device, PPP ambiguity using triple-frequency signals. The method may also include applying, using the processing device, a carrier smooth carrier function to resolve measurement noise. Resolving the PPP ambiguity may include fixing the L2/L5 wide-lane ambiguities in a geometry-free function. Additionally, resolving the PPP ambiguity may include fixing the L1/L2 wide-lane ambiguities in a geometry-based function. Similarly, resolving the PPP ambiguity may also include fixing the L1/L5 wide-lane ambiguities in a geometry-based function.

METHODS FOR SUBNANOSECOND TIME SYNCHRONIZING USING RTK RECEIVERS AND DEVICES THEREOF

A method, non-transitory computer readable medium and timing computing device for subnanosecond time synchronization. A difference between synchronized measurements of one of a plurality of satellite signals from a reference receiver and another receiver for each of N values within a cycle is determined. A clock bias error is calculated for each of the N values. The calculated clock bias errors are stored in a vector over time for each of the N values, with one of the vectors for each of the N values. A trajectory of the vectors over time is determined. The one of the vectors with a best convergence over time is selected. A timing signal is adjusted based on the N value for the selected one of the vectors with the best convergence over time. 1. A method for subnanosecond time synchronization , the method comprising:determining, by the timing computing device, a difference between synchronized measurements of one of a plurality of satellite signals from a reference receiver and another receiver for each of N values within a cycle;calculating, by the timing computing device, a clock bias error for each of the N values;storing, by the timing computing device, the calculated clock bias errors in a vector over time for each of the N values, with one of the vectors for each of the N values;determining, by the timing computing device, a trajectory of the vectors over time;selecting, by the timing computing device, the one of the vectors with a best convergence over time; andadjusting, by the timing computing device, a timing signal based on the N value for the selected one of the vectors with the best convergence over time.2. The method of further comprising:selecting, by the timing computing device, the one of the plurality of satellite signals based on one or more of a signal strength of each of the plurality of satellite signals, a Doppler shift of each of the plurality of satellite signals, or an elevation angle of each of the satellites for each of the plurality of ...

GEOPOSITIONING METHOD USING ASSISTANCE DATA

A method for determining assistance data to facilitate processing of radio-navigation signals from a set of radio-navigational satellites of a reference network, each radio-navigational satellite broadcasting at least a first radio-navigation signal on a first frequency and a second radio-navigation signal on a second frequency, the second frequency being distinct from the first frequency, is provided. 1. A method for determining assistance data to facilitate processing of radio-navigation signals from a set of radio-navigational satellites of a reference network , each radio-navigational satellite broadcasting at least a first radio-navigation signal on a first frequency and a second radio-navigation signal on a second frequency , the second frequency being distinct from the first frequency , the method comprising:recording, by the at least one signal receiver of the reference network, as radio-navigation signals any first radio-navigation signal and second radio-navigation signal broadcasted by each radio-navigational satellite;deriving, by the at least one signal receiver, code and phase measurements from the said radio-navigation signals recorded, the phase measurements having ambiguities, each of which is an a priori unknown integer number of cycles;resolving, by the at least one signal receiver, the ambiguities in the phase measurements on the first frequency in a same manner for all the satellites and reference receivers of the reference network to produce a resolution;deducing, by the at least one signal receiver, a set of iono-free transmitter phase clock values arising from the resolution and a set of iono-free receiver phase clock values arising from the resolution;calculating, by the at least one signal receiver, for each satellite-reference receiver pair, a carrier code shift combination value from the code and phase measurements for each respective satellite on the first frequency;calculating, by the at least one signal receiver, a plurality of ...

SYSTEMS AND METHODS FOR DISTRIBUTED DENSE NETWORK PROCESSING OF SATELLITE POSITIONING DATA

A system for generating satellite positioning corrections includes a global correction module that generates a set of global pre-corrections based on modeling of global positioning error, a set of local correction modules that, for each local correction module of the set, takes input from a unique reference source and generates a set of local pre-corrections based on modeling of local positioning error; and a correction generator that generates a positioning correction from the set of global pre-corrections and the sets of local pre-corrections to correct a position of the mobile receiver. 1a global correction module that receives, from a first set of reference sources, at least one of positioning code data and carrier phase data; wherein the positioning code data and carrier phase data from the first set of reference sources results from the reception of satellite signals from a first set of satellites at the first set of reference sources; wherein the global correction module generates a set of global pre-corrections;a set of local correction modules that receive, from a second set of reference sources, at least one of positioning code data and carrier phase data; wherein the positioning code data and carrier phase data from the second set of reference sources results from the reception of satellite signals from a second set of satellites at the second set of reference sources; wherein each local correction module of the set takes input from a unique reference source; wherein each local correction module of the set generates a set of local pre-corrections;a local modeler coupled to a plurality of the local correction modules; wherein the local modeler produces a spatial local model of the local pre-corrections; anda correction generator that generates a positioning correction of the mobile receiver from the set of global pre-corrections and the spatial local model.. A system for generating satellite positioning corrections for a mobile receiver comprising: This ...

Rapid recovery of precise position after temporary signal loss

A real-time kinematic (RTK) filter uses the backup data to estimate a relative position vector between the mobile receiver at the first measurement time and the mobile receiver at the second measurement time and to provide recovery data associated with a satellite-differenced double-difference estimation for the mobile receiver between the first measurement time and the second measurement time. A navigation positioning estimator can apply the relative position vector, the backup data, the recovery data from the RTK filter, and received correction data with precise clock and orbit information on the satellite signals, as inputs, constraints, or both for convergence or resolution of wide-lane and narrow-lane ambiguities, and determination of a precise position, in accordance with a precise positioning algorithm.

Method for Precise Point Positioning in a Satellite Navigation System

Base stations of a satellite navigation system have receivers Phase biases and instrumental and atmospheric errors, are determined and transmitted to navigation devices. Precise Point Positioning includes steps of: obtaining code and phase measurements which were performed on the satellite signals by the plurality of receivers at two or more frequencies, determining separate individual values for a plurality of phase ambiguities and a plurality of the errors based on the code and phase measurements, wherein the receivers are grouped into clusters, and in each cluster a determination of a single cluster solution is performed, in which satellite errors selected from the group of satellite position errors, satellite clock errors and satellite phase biases are determined based on the phase and code measurements performed by the receivers of the respective cluster; and a multi-cluster solution is performed, in which the single cluster solutions are adjusted. 2. The method according to claim 1 , wherein the vector elements of the measurement vector formed for the determination of the single cluster solution are undifferenced and uncombined code and phase measurements.3. The method according to claim 1 , wherein the determination of the single cluster solution comprises the following operations:the code and phase measurements are used to form a measurement vector,variables for unknown phase ambiguities and unknown errors are mapped into other variables in order to establish a state vector and a full-rank observation matrix between the measurement vector and the state vector, anda recursive state estimator is performed using the observation matrix for estimating values for the variables in each cluster.4. The method according to claim 3 , wherein claim 3 , in each cluster claim 3 , phase ambiguities are determined together with the selected satellite error and an intermediate phase ambiguity fixing is performed while performing the recursive state estimator.5. The method ...

GROUND-BASED SYSTEM AND METHOD TO EXTEND THE DETECTION OF EXCESSIVE DELAY GRADIENTS USING DUAL PROCESSING

A processing module to monitor a horizontal delay gradient in satellite signals is provided. The processing module includes a dual-processing-satellite-differencing module, a double differencing module, and a gradient estimator module. The dual-processing-satellite-differencing module is operable to: receive carrier phase measurements for at least two satellites from at least two reference receivers; implement a first processing mode to normalize first satellite differences between +λ/2 and −λ/2; implement a second processing mode configured to normalize second satellite differences between 0 and λ; and select for further processing one of: data indicative of the first satellite differences processed according to the first processing mode; and data indicative of the second satellite differences processed according to the second processing mode. The double differencing module forms double-differences based on the selected data input from the dual-processing-satellite-differencing module. The gradient estimator module estimates a magnitude of the horizontal delay gradient. 1. A processing module to monitor a horizontal delay gradient in satellite signals , the processing module comprising: receive carrier phase measurements for at least two satellites from at least two reference receivers, the at least two satellites including a monitored satellite and at least one other satellite, wherein the at least two reference receivers have a known geometric relationship to each other; and', 'implement a first processing mode to normalize first satellite differences between +λ/2 and −λ/2;', 'implement a second processing mode configured to normalize second satellite differences between 0 and λ; and', 'select for further processing one of: data indicative of the first satellite differences processed according to the first processing mode; and data indicative of the second satellite differences processed according to the second processing mode;, 'a dual-processing-satellite- ...

GROUND-BASED SYSTEM AND METHOD TO EXTEND THE DETECTION OF EXCESSIVE DELAY GRADIENTS USING PARITY CORRECTIONS

A processing function to monitor a horizontal delay gradient in satellite signals is provided. The processing function includes a satellite differencing module, a double differencing module, a parity test module, and a gradient estimator module. The satellite differencing module receives carrier phase measurements for at least two satellites from at least three reference receivers. The satellite differencing module determines differences in the carrier phase measurements between signals from the monitored satellite and at least one of the at least one other satellite. The double differencing module: forms double-differences between pairs of the reference receivers; compensates the double-differences between the pairs; performs a modulo operation; and averages the double differences. The parity test module inputs the averaged compensated double differences when the average exceeds a parity enable threshold. The gradient estimator module configured is to estimate a magnitude of the horizontal delay gradient. 1. A processing function to monitor a horizontal delay gradient in satellite signals , the processing function comprising:a satellite differencing module configured to receive carrier phase measurements for at least two satellites from at least three reference receivers, the at least two satellites including a monitored satellite and at least one other satellite, wherein the at least three reference receivers have a known geometric relationship to each other, and wherein the satellite differencing module determines differences in the carrier phase measurements between signals from the monitored satellite and at least one of the at least one other satellite; form double-differences between one or more pairs of the at least three reference receivers based on the differences in the carrier phase measurements,', 'compensate the double-differences between the pairs for the known difference-in-position of the reference receivers in the pairs,', 'perform a modulo ...

PPP-RTK METHOD AND SYSTEM FOR GNSS SIGNAL BASED POSITION DETERMINATION

GNS signal correction system and method for calculating GNSS corrections, and complementary mobile and mobile position determination method based on these GNSS corrections. The methods employ satellite-single-differenced mixed code-and-phase system hardware delays in modelling carrier phase system observables. These system hardware delays are dynamically estimated by the signal correction system using a dynamic system state model. The estimated system hardware delays are transmitted to the mobile, which applies these delays to a dynamic mobile state model, in order to improve the accuracy and/or convergence time of mobile position estimations. 123-. (canceled)24. A method for calculating global navigation satellite system (GNSS) corrections for transmission to a mobile , using a global navigation satellite (GNS) signal correction system comprising a reference station and a system signal transmitter , wherein the method comprises:acquiring at the reference station GNSS data comprising pseudo range system observations and carrier phase system observations from a plurality of GNSS satellites transmitted over multiple epochs;applying the GNSS data received from the reference station to a dynamic system state model having the pseudo range system observations and carrier phase system observations as measurements;dynamically estimating satellite-single-differenced floating value mixed code-and-phase system hardware delays for distinct carrier phase observations via the dynamic system state model; andtransmitting the mixed code-and-phase system hardware delays to the mobile in real time via the system signal transmitter.25. The method according to claim 24 , wherein the dynamic system state model is defined by:{'br': None, 'i': p', 't', 'R', 't', 'T', 't', 'b', 't', 'd', 't', 'I', 't, 'sub': i,r', 'r', 'r', 'p', {'sub2': 'i'}, ',r', 'p', {'sub2': 'i'}, ',p', {'sub2': '1'}, ',r', 'i', 'r, 'sup': s', 's', 's', 'ref', 's,ref', 's,ref, '()=()+()+()+()+γ()'}{'br': None, 'sub': i ...

USING LORAN FOR TERRESTRIAL TIME TRANSFER

Techniques for allowing a remote receiver (such as a small cell) to derive a precise time reference (such as Coordinated Universal Time (UTC)) when the remote receiver is not able to derive time directly from received GPS signals. The remote receiver receives LORAN signals from a LORAN station and determines the propagation time from the LORAN station to the remote receiver. The remote receiver derives a precise time reference from the received LORAN signals and the propagation time. The remote receiver may receive additional timing information from a reference station. 1. A method for deriving a precise time reference at a receiver when GNSS signals are not directly available at the receiver , comprising:determining that GNSS signals are not directly available for acquisition at the receiver;receiving LORAN signals from a LORAN station at the receiver;determining the propagation time for the LORAN signals traveling between the LORAN station and the receiver; andderiving a precise time reference from the received LORAN signals and the propagation time.2. A method for deriving a precise time reference at a device when another precise time reference is not available at the device , comprising:receiving LORAN signals at the device from a LORAN station;determining the propagation time for the LORAN signals traveling between the LORAN station and the receiver; andderiving a precise time reference at the device from the received LORAN signals and the propagation time when the another precise time reference is not available.3. A method for deriving a precise time reference at a GNSS receiver when GNSS signals are not directly available at the GNSS receiver , comprising:determining that GNSS signals are not directly available at the GNSS receiver;receiving a plurality of LORAN signals from a LORAN station at the GNSS receiver;receiving precise timing information from a reference station remote from the GNSS receiver, wherein the precise timing information includes time tags ...

GNSS CORRECTION DATA DISTRIBUTION DEVICE, GNSS CORRECTION DATA DISTRIBUTION SYSTEM, AND GNSS CORRECTION DATA DISTRIBUTION METHOD

GPS (Global Positioning System) correction data distribution device includes: first communicator that communicates with terminal device; second communicator that communicates with server; HDD (hard drive) that stores a database, the database having at least one coordinate and GPS correction data in association with each other; and manager that manages the database. Manager obtains GPS correction data from server with respect to the coordinate in the database, and updates the database while associating the coordinate with the GPS correction data. Manager refers to the database upon receipt of the GPS correction data distribution request from terminal device, extracts the GPS correction data of the coordinate corresponding to a position of the terminal device, and distributes the extracted GPS correction data to terminal device. 1. A GNSS (Global Navigation Satellite System) correction data distribution device that distributes GNSS correction data to a terminal device , the terminal device performing real time kinematic positioning using a GNSS , the GNSS correction data distribution device comprising:a first communicator that communicates with the terminal device;a second communicator that communicates with a GNSS correction data server;a storage that stores GNSS correction data information, the GNSS correction data information having at least one coordinate and GNSS correction data in association with each other; anda manager that manages the GNSS correction data information,wherein the managerobtains the GNSS correction data from the GNSS correction data server through the second communicator with respect to the coordinate in the GNSS correction data information, and updates the GNSS correction data information while associating the coordinate with the GNSS correction data, andrefers to the GNSS correction data information upon receipt of a GNSS correction data distribution request from the terminal device through the first communicator, extracts the GNSS ...

Virtual Reference Station Switching Method and Device in Real Time Kinematic System

A virtual reference station switching method includes obtaining networking change information of a reference station network, obtaining prediction information based on the networking change information of the reference station network, where the prediction information includes a reference station combination used to calculate a virtual reference station of a mobile station is switched from a first reference station combination to a second reference station combination, obtaining a first virtual reference station through calculation based on the first reference station combination, and obtaining a second virtual reference station through calculation based on the second reference station combination, and providing at least one of first virtual reference station information or second virtual reference station information to the mobile station. 1. A virtual reference station switching method in a real time kinematic system , comprising:obtaining networking change information of a reference station network;obtaining prediction information based on the networking change information of the reference station network, wherein the prediction information comprises a reference station combination used to calculate a virtual reference station of a mobile station that is switched from a first reference station combination to a second reference station combination;obtaining a first virtual reference station based on the first reference station combination;obtaining a second virtual reference station based on the second reference station combination;obtaining first virtual reference station information and second virtual reference station information; andproviding at least one of the first virtual reference station information or the second virtual reference station information to the mobile station to perform positioning correction on the mobile station.2. The method according to claim 1 , wherein before obtaining the networking change information of the reference station network ...

POSITIONING METHOD AND APPARATUS

Embodiments of this application provide a positioning method and apparatus. The method may include setting an ambiguity adjustment parameter for a mobile device, where the ambiguity adjustment parameter is used to record an ambiguity change status used to determine a virtual station observation value for the mobile device. The method may also include adjusting an observation value of a first primary datum station based on a first ambiguity adjustment parameter of the mobile device in a first serving cell to generate a first virtual station observation value, where the first primary datum station is a primary datum station of the first serving cell, and the first virtual station observation value is used to position the mobile device in the first serving cell; and sending the first virtual station observation value to the mobile device. 1. A positioning method , comprising:setting an ambiguity adjustment parameter for a mobile device, wherein the ambiguity adjustment parameter is used to record an ambiguity change status used to determine a virtual station observation value for the mobile device;adjusting an observation value of a first primary datum station based on a first ambiguity adjustment parameter of the mobile device in a first serving cell, to generate a first virtual station observation value, wherein the first primary datum station is a primary datum station of the first serving cell, and the first virtual station observation value is used to position the mobile device in the first serving cell; andsending the first virtual station observation value to the mobile device.2. The method according to claim 1 , wherein before the adjusting the observation value of the first primary datum station based on the first ambiguity adjustment parameter of the mobile device in the first serving cell claim 1 , to generate the first virtual station observation value claim 1 , the method further comprises:determining that the first primary datum station that provides a ...

Wireless Device, Network Node and Methods therein for Reporting a Measurement

A method, performed by a wireless device (), for reporting at least one measurement to a network node () is disclosed. The wireless device () determines () an extended format to be used for reporting, to the network node (), at least one of: a code phase measurement, a carrier phase measurement or a GNSS Signal ID. The extended format extends at least one of: a range or a resolution, of an existing format for reporting the at least one of: the code phase measurement, the carrier phase measurement or the GNSS Signal ID. The wireless device () then sends () a measurement report comprising the at least one of: the code phase measurement, the carrier phase measurement or the GNSS Signal ID, to the network node (), using the determined extended format. A method performed by the network node () is also described, whereby the network node () receives the measurement report. 140-. (canceled)41. A method , performed by a wireless device , for reporting at least one measurement to a network node , the wireless device and the network node operating in a wireless communications network , the method comprising: the extended format extends an existing format for reporting the at least one of the code phase measurement, the carrier phase measurement, and the GNSS Signal ID, and', 'the extended format extends at least one of a range and a resolution of the existing format; and, 'determining an extended format to be used for reporting, to the network node, at least one of a code phase measurement, a carrier phase measurement, and a Global Navigation Satellite System (GNSS) Signal Identifier (ID), whereinsending, to the network node using the determined extended format, a measurement report including the at least one of the code phase measurement, the carrier phase measurement, and the GNSS Signal ID.42. The method according to claim 41 , wherein the extended format comprises at least one information element (IE) in a GNSS-MeasurementList IE.43. The method according to claim 41 , ...

DEVICE, SYSTEM AND METHODS USING ANGLE OF ARRIVAL MEASURMENTS FOR ADS-B AUTHENTICATION AND NAVIGATION

The present disclosure is directed to a receiver for Automatic Dependent Surveillance Broadcast (ADS-B) verification of a target aircraft including a first input for receiving flight tracking information from a target aircraft that indicates positional information of the target aircraft. The receiver further includes a second input for receiving positional and heading information indicating the location and orientation of a multi-element array antenna configured to be attached to the receiver, and a processing module that generates a measured bearing derived from angle of arrival data, and an expected bearing of the target aircraft derived from the indicated positional information of the target aircraft and the positional and heading information defining the receiver location and orientation. A comparator compares the expected bearing to the measured bearing and verifies the ADS-B flight tracking information of the target aircraft and outputs an indication of authenticity based on the verification. 1. A method of measuring an Angle of Arrival (AOA) , comprising:cycling a commutating solid state switch between each antenna element of a multi-element array antenna based on a synchronization signal received from a receiver system;receiving at least one signal at the multi-element array antenna so that a time multiplexed RF signal is received at an output of the commutating solid state switch;converting the time multiplexed RF signal at an analog-to-digital (A/D) converter based on the synchronization signal into a plurality of antenna element specific digital samples for each discrete signal;de-multiplexing the plurality of antenna element specific digital samples into discrete digital data streams for each antenna element of the multi-element array antenna; anddetermining a measured AOA of the at least one signal based on measuring a relative phase of a carrier signal identified in each discrete digital data stream of the respective antenna elements of the commutating ...

STORING AND PROVIDING RAW SATELLITE DATA

A microservice node can store first raw satellite data, associated with a first satellite constellation, in a first electronic file in a first data store, can combine the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file, and can store the first compressed electronic file in a second data store. The first raw satellite data and second raw satellite data can be received during a particular time period. The second data store can include a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation. The microservice node can receive a request from a client device, can combine the first compressed electronic file and the second compressed electronic file into a third compressed electronic file based on the request, and can transmit the third compressed electronic file to the client device. 1. A method , comprising: 'wherein the first raw satellite data is associated with a first satellite constellation;', 'storing, by a microservice node, first raw satellite data, received from a reference station, in a first electronic file in a first data store,'} 'wherein the first raw satellite data and second raw satellite data, stored in the one or more second electronic files, were received during a particular time period;', 'combining, by the microservice node, the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file,'} 'wherein the second data store includes a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation;', 'storing, by the microservice node, the first compressed electronic file in a second data store,'} the particular time period,', 'the first satellite constellation, and', 'the second satellite constellation;, 'wherein the request ...

FACTORY-SPECIFIC INERTIAL MEASUREMENT UNIT ERROR MODEL

Systems and methods providing a factory-specific inertial measurement unit error model are described herein. In certain embodiments, a system includes a storage medium configured to store measurements received from one or more units located within a controlled environment, wherein the controlled environment provides environmental information about the environmental changes experienced by the one or more units. The system also includes a processing unit configured to execute code that causes the processing unit to calculate residuals based on the stored measurements and the provided environmental information. Additionally, the code causes the processing unit to calculate a stochastic model for the one or more units based on the calculated residuals and the provided environmental information, wherein the stochastic model is applied to the measurements of the one or more units. 1. A system comprising:a storage medium configured to store measurements received from one or more units located within a controlled environment, wherein the controlled environment provides environmental information about the environmental changes experienced by the one or more units; and calculate residuals based on the stored measurements and the provided environmental information; and', 'calculate a stochastic model for the one or more units based on the calculated residuals and the provided environmental information;, 'a processing unit configured to execute code that causes the processing unit towherein the stochastic model is applied to the measurements of the one or more units.2. The system of claim 1 , wherein the processing unit is further configured to execute code that causes the processing unit to compute a deterministic model based on the stored measurements and the provided environmental information claim 1 , wherein the one or more units are calibrated using the deterministic model and the residuals are calculated based on measurements provided by the calibrated one or more units. ...

Ionosphere modeling apparatus and methods

Methods and apparatus which characterize the ionospheric error across a network of GNSS reference stations are presented. The method relies on dual-frequency phase measurements in a geometry-free linear combination. The data are filtered for ambiguities and the characteristic parameters of the ionosphere. In combination with filter results from other combinations of phase measurements (ionosphere free combination), the physically-based model provides rapid and reliable ambiguity resolution.

Compact Transmission of GPS Information Using Compressed Measurement Record Format

A format for providing messages among GNSS apparatus includes providing a message identification block and a message body. The message identification block includes information specifying a message length and a message type block specifying a message type. Rather than sending all data from one apparatus to another, ambiguous observation data is sent to conserve bandwidth. At the sender a deconstruction of GNSS code and carrier observations using knowledge of the signal structure and constellation geometry, together with simplifications of atmospheric models, allows removal from the observation data of that information which can be implicitly understood or recreated by the recipient. This enables only the necessary information to be packed for transmission to the recipient.

Gnss signal processing methods and apparatus

Methods and apparatus for processing of data from a network of GNSS reference stations are presented. An ionosphere-free, federated geometry filter is employed so that computation time increases only linearly with the increase in number of reference stations, significantly reducing processing time as compared to a centralized filter approach.

海上gnss参考站装置、海上gnss定位系统以及生成海上定位参考数据的方法

一种海上GNSS参考站装置(102)包括：处理资源(118)和水声通信单元(115)。水声通信单元(115)包括水声换能器(116)，水声通信单元(115)被布置为与处理资源(118)协作以便计算位置。装置(102)还包括GNSS天线(128)站点和可操作地耦合到处理资源(118)的方向确定单元(124)。方向确定单元(124)被布置为确定与GNSS天线(128)站点以及水声通信单元(115)的水声换能器(116)相关联的方向。

위치결정 방법 및 장치

본 출원의 실시예들은 위치결정 방법 및 장치를 제공하고, 이 방법은: 모바일 디바이스에 대해 모호성 조정 파라미터를 설정하는 단계 - 모호성 조정 파라미터는 모바일 디바이스에 대한 가상 스테이션 관측값을 결정하는데 사용되는 모호성 변경 상태를 기록하는데 사용됨 -; 제1 서빙 셀에서 모바일 디바이스의 제1 모호성 조정 파라미터에 기초하여 제1 프라이머리 기준 스테이션의 관측값을 조정하여, 제1 가상 스테이션 관측값을 생성하는 단계 - 제1 프라이머리 기준 스테이션은 제1 서빙 셀의 프라이머리 기준 스테이션이고, 제1 가상 스테이션 관측값은 제1 서빙 셀에서 모바일 디바이스를 위치결정하는데 사용됨 -; 및 제1 가상 스테이션 관측값을 모바일 디바이스에 송신하는 단계를 포함한다. 본 출원의 실시예들에서의 방법 및 장치에 따르면, 모호성 조정 파라미터는 모바일 디바이스에 대해 설정되고, 상이한 셀들의 프라이머리 기준 스테이션들의 관측값들은 상이한 셀들에서의 모바일 디바이스의 모호성 조정 파라미터 값들에 기초하여 조정되어, 위치결정 서비스 연속성이 보장될 수 있도록 한다.

Digital position detector

내용 없음. No content.

Navigation system and method of resolving integer ambiguities using limitation ambiguity double difference

FIELD: radar ranging and radio navigation. SUBSTANCE: state of plurality of global navigation satellites (110-1, 110-2, 110-N) is calculated on basis of received satellite navigation measurements. Base lines are identified, each corresponding to a pair of reference stations (140-1, 140-2, 140-M). For each identified base line is calculated floating and integer value for integer ambiguity double difference. Integer ambiguities of double difference are identified, which satisfy a set of preset conditions, and calculated state of plurality of global navigation satellites, in accordance with an integer limitation used to each integer ambiguity double difference which satisfy a set of preset conditions. Correcting information is calculated from specified calculated state of plurality of global navigation satellites. EFFECT: improved correction of information for navigation receivers (120) by means of resolution of integer ambiguities in range measurements of reference stations using restrictions of integer ambiguity of double difference. 28 cl, 9 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК G01S 19/04 (11) (13) 2 591 953 C2 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013137442/07, 22.12.2011 (24) Дата начала отсчета срока действия патента: 22.12.2011 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ДАЙ Ливэнь Л. (US), ХЭТЧ Рональд Р. (US), ЧЖАН Юйцзе (US), ВАН Мин (US) R U (73) Патентообладатель(и): ДИР ЭНД КОМПАНИ (US) 12.01.2011 US 61/432,172; 17.11.2011 US 13/299,324 (43) Дата публикации заявки: 20.02.2015 Бюл. № 5 (56) Список документов, цитированных в отчете о поиске: US5841026 А, 24.11.1998. US2009135057 А1, 28.05.2009. WO2008150390; 11.12.2008. WO2004028060 A2, 01.04.2004. RU2181490 C2, 20.04.2002. RU2318222 C2, 27.02.2008. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.08.2013 2 5 9 1 9 5 3 (45) Опубликовано: 20.07.2016 Бюл. № 20 US 2011/066720 (22.12.2011) C ...

Landing radar

FIELD: radar ranging and radio navigation.SUBSTANCE: invention relates to radiolocation and can be used as a landing radar in modern air traffic control systems for detecting and monitoring aircraft flight on approach trajectory on landing strip of aerodrome. Technical result is achieved by introducing blocks of digital phase detectors (23), (24), (27) and (28) and coordinate measurement units (25) and (29) into units of information processing units of phase changers (22) and (26), as well as use of monopulse signal processing using quadrature components of normalized difference signal with respect to total on complex plane.EFFECT: high accuracy of determining elevation coordinates of low-altitude aircraft.1 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 721 785 C1 (51) МПК G01S 13/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01S 13/913 (2019.08); G01S 13/422 (2019.08); G01S 1/00 (2019.08); G01S 19/04 (2019.08); B64D 45/04 (2019.08) (21)(22) Заявка: 2019110484, 08.04.2019 08.04.2019 Дата регистрации: 22.05.2020 (54) Посадочный радиолокатор (57) Реферат: Изобретение относится к области радиолокации и может быть использовано в качестве посадочного радиолокатора в современных системах управления воздушным движением для обнаружения и контроля за полетом воздушного судна на траектории захода на посадку на взлетно-посадочную полосу аэродрома. Техническим результатом является повышение точности определения угломестных координат низколетящих ВС. Упомянутый R U 2 7 2 1 7 8 5 Адрес для переписки: 192012, Санкт-Петербург, пр. Обуховской обороны, 120, Акционерное общество "Ордена Трудового Красного Знамени Всероссийский научно-исследовательский институт радиоаппаратуры" (АО "ВНИИРА") Стр.: 1 (56) Список документов, цитированных в отчете о поиске: RU 2341774 C2, 20.12.2008. RU 2371737 C1, 27.10.2009. RU 2551448 C1, 27.05.2015. RU 2516697 C2, 20.05.2014. US 3564543 A, 16.02.1971. US 3197777 A, 27.07.1965. ...

Ground-based system and method to extend detection of excessive delay variations using parity corrections

FIELD: electrical communication engineering.SUBSTANCE: invention relates to communication engineering and can be used in satellite communication systems. To this end, a data processing circuit includes a satellite signal differentiation module, a double differencing module, a parity test module and a variation estimation module. Satellite signal differentiation module receives carrier phase measurement results from at least two satellites from at least three reference receivers. Satellite signal differentiation module determines the differences in the carrier phase measurement results between the signals received from the tracked satellite and at least one satellite from among other satellites, the number of which is at least one. Double differencing module forms double differences between pairs of reference receivers; corrects double differences between pairs of receivers; performs a modulo operation and averages the double differences. Parity test module inputs the averaged corrected double differences if the average value exceeds a predetermined threshold value, allowing parity testing. Variation estimation module is configured to estimate the magnitude of the horizontal delay variation.EFFECT: technical result consists in higher reliability of communication by processing data to track the horizontal variation of satellite signal delays.20 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 684 899 C2 (51) МПК H04B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H04B 7/00 (2013.01); H04B 7/185 (2013.01); H03M 13/036 (2013.01) (21) (22) Заявка: 2015104567, 11.02.2015 (24) Дата начала отсчета срока действия патента: 11.02.2015 (72) Автор(ы): УИД Дуглас (US), РЕУТЕР Рэнди Дж. (US) 16.04.2019 15.04.2014 US 14/253,445 (43) Дата публикации заявки: 27.08.2016 Бюл. № 2503970 C2, 10.01.2014. WO2004/057364 A1, 08.07.2004. WO2009/069700 A1, 04.06.2009. WO2014/199865 A1, 18.12.2014. 24 (45) Опубликовано: 16.04. ...

Method and device for positioning

本申请实施例提供了一种用于定位的方法和装置，该方法包括：为移动设备设置模糊度调整参数，该模糊度调整参数用于记录为该移动设备确定虚拟站观测值所使用的模糊度变化情况；根据该移动设备在第一服务小区的第一模糊度调整参数值，对第一主基准站的观测值进行调整，生成第一虚拟站观测值，该第一主基准站为该第一服务小区的主基准站，该第一虚拟站观测值用于该移动设备在该第一服务小区进行定位；向该移动设备发送该第一虚拟站观测值。本申请实施例的方法和装置，通过为移动设备设置模糊度调整参数，并通过移动设备在不同小区的模糊度调整参数值对不同小区的主基准站的观测值进行调整，从而能够保证定位服务的连续性。

Navigation satellite system positioning with enhanced satellite-specific correction information

The invention relates to methods, notably carried out by global or regional navigation satellite system (NSS) receivers, which involve receiving satellite-specific, nadir-angle dependent correction information associated with each of at least two NSS satellites among a plurality of NSS satellites. The correction information is useful to correct observed NSS signals, so as to mitigate the effects of satellite-specific, nadir-angle dependent biases in the NSS signals, and thus improve the performance of position determination systems. The invention also relates to methods for generating such correction information, to methods for designing a satellite, to NSS receivers, to apparatuses for generating correction information to be sent to the receivers, and to computer programs and storage mediums.

Monitor based ambiguity verification for enhanced guidance quality

Methods and systems useful in determining relative position of moveable vehicle, for example including a GPS receiver, may include determining candidate integer ambiguities in groups, and performing tests to check usefulness of those candidate integer ambiguities.

Rapid recovery of precise position after temporary signal loss

A real-time kinematic (RTK) filter uses the backup data to estimate a relative position vector between the mobile receiver at the first measurement time and the mobile receiver at the second measurement time and to provide recovery data associated with a satellite-differenced double-difference estimation for the mobile receiver between the first measurement time and the second measurement time. A navigation positioning estimator can apply the relative position vector, the backup data, the recovery data from the RTK filter, and received correction data with precise clock and orbit information on the satellite signals, as inputs, constraints, or both for convergence or resolution of wide-lane and narrow-lane ambiguities, and determination of a precise position, in accordance with a precise positioning algorithm.

Rapid determination of precise position by aiding data

A relative positioning module applies a real-time kinematic (RTK) algorithm to provide relative position vector between reference receiver and rover receiver and to provide recovery data. At the rover, the precise positioning module applies the relative position vector, the aiding data, recovery data, and correction data as inputs, constraints, or both for convergence of one or more predictive filters on wide-lane and narrow-lane ambiguities (e.g., in accordance with a precise positioning algorithm). At the rover, the precise positioning module or the navigation positioning estimator estimates a precise position of the rover based on the converged or fixed narrow-lane ambiguities and wide-lane ambiguities.

Systems and methods for distributed dense network processing of satellite positioning data

A system for generating satellite positioning corrections includes a global correction module that generates a set of global pre-corrections based on modeling of global positioning error, a set of local correction modules that, for each local correction module of the set, takes input from a unique reference source and generates a set of local pre-corrections based on modeling of local positioning error; and a correction generator that generates a positioning correction from the set of global pre-corrections and the sets of local pre-corrections to correct a position of the mobile receiver.

System and method for satellite positioning

A system and method for determining a position of a mobile receiver including receiving a set of satellite observations, the set of satellite observations corresponding to a set of satellites; determining a state vector at each of a plurality of filters, wherein each filter determines the respective state vector based on a unique subset of the set of satellite observations; after a convergence criterion is satisfied, determining a converged state vector based on the respective integer ambiguity hypotheses; and determining the position of the mobile resolver based on the converged state vector.

System and method for determining GNSS positioning corrections

A system or method for generating GNSS corrections can include receiving satellite observations associated with a set of satellites at a reference station, determining atmospheric corrections valid within a geographical area; wherein geographical areas associated with different atmospheric corrections can be overlapping, and wherein the atmospheric corrections can be provided to a GNSS receiver when the locality of the GNSS receiver is within a transmission region of the geographical area.

Ionosphere modeling apparatus and method

Ein Verfahren zum Verarbeiten eines Satzes von GNSS-Signaldaten, abgeleitet von Signalen mit mindestens zwei Trägerfrequenzen und empfangen von zwei oder mehr Satelliten bei zwei oder mehr Referenzstationen über mehrere Zeiträume, umfassend: a. für jeden Satelliten, Bilden einer geometriefreien Kombination von GNSS-Signaldaten, abgeleitet von zwei Trägerfrequenzen, empfangen bei den Referenzstationen während eines Zeitraums; b. für jeden Satelliten, Anwenden eines Filters auf die geometriefreie Kombination zum Erhalten von Zustandswerten, die repräsentieren (i) eine Träger-Phasen-Mehrdeutigkeit für jede Referenzstation und (ii) ein ionosphärisches Vorrücken bei einem Referenzpunkt und Zustandswerten, die eine Variation des ionosphärischen Vorrückens repräsentieren relativ zu dem Referenzpunkt über einen Netzwerkbereich, zusammen mit Fehlerschätzungen für die Zustandswerte; und c. Wiederholen von a. und b. für jeden der mehreren Zeiträume zum Aktualisieren der Zustandswerte und Fehlerschätzungen. A method of processing a set of GNSS signal data derived from signals having at least two carrier frequencies and receiving two or more satellites at two or more reference stations over a plurality of time periods, comprising: a. for each satellite, forming a geometry-free combination of GNSS signal data derived from two carrier frequencies received at the reference stations during a time period; b. for each satellite, applying a filter to the geometry-free combination to obtain state values representing (i) a carrier phase ambiguity for each reference station and (ii) ionospheric advancing at a reference point and state values representing a variation of the ionospheric advance relative to the reference point over a network range, along with error estimates for the state values; and c. Repeat a. and b. for each of the multiple time periods for updating the state values and error estimates.

Positioning using a reference station

为了支持参考站的变动，首先提供对第一参考站有效的数据以便传输给设备，然后，在有限时间内并行提供对第一参考站有效的数据和对第二参考站有效的数据以便传输给所述设备，最后，提供对第二参考站有效的数据以便传输给所述设备。第一参考站的数据和第二参考站的数据包括对卫星信号的测量数据。在接收端，可以提供分别接收到的数据以便对包含卫星信号接收器的设备进行定位。

Navigation system and method for resolving integer ambiguities using double difference ambiguity constraints

A system and method for providing improved correction information to navigation receivers includes receiving, from a plurality of reference stations at known locations, a plurality of satellite navigation measurements of signals from a plurality of global navigation satellites. A state of the plurality of global navigation satellites is computed based on the received satellite navigation measurements. Baselines, each corresponding to a pair of the reference stations, are identified. For each identified baseline, computing floating and integer values for a double-differenced integer ambiguity. Double-differenced integer ambiguities that satisfy a set of predefined conditions are identified, and the computed state of the plurality of global navigation satellites is adjusted in accordance with an integer value constraint applied to each double-differenced integer ambiguity that satisfies the set of predefined conditions. The correction information is computed from the adjusted computed state of the plurality of global navigation satellites.

Network for carrier phase differential GPS corrections

Method and apparatus for providing GPS pseudorange correction information over a selected geographic region S with a diameter of up to 3000 km with an associated inaccuracy no greater than 5 cm. N spaced apart GPS fiducial stations (N≧3), whose location coordinates (u n , v n , v n ) are fixed and are known with high accuracy, are provided within or adjacent to the region R. Each fiducial station n (n=1, 2, . . . , N) receives GPS signals from at least four common-view GPS satellites, numbered m=1, 2, . . . , M (M≧3), computes its own GPS-determined location coordinates, compares these coordinates with its known location coordinates determines the pseudorange corrections PRC(t;t0;m;n) for its GPS-determined location, and transmits these correction signals to a central station located within or adjacent to the region S. The central station retransmits the pseudorange correction signals throughout the region S. A mobile GPS station within or adjacent to the region S has stored within its coordinates (u', v', w') of the GPS determined last location of that mobile station and the spatial coordinates (u n (k), v n (k), w n (k)) (k=1, 2, . . . , K; K≧3) of K GPS fiducial stations within S that are closest to the last determined location of that mobile station. The mobile station then computes the differential GPS corrections for the GPS- determined present location of that mobile station. Alternatively, the fiducial stations can transmit to the central station unprocessed GPS signals for determination of the pseudorange correction signals at the central station. This approach can be modified it the region S is two-dimensional, where only one coordinate u is needed.

High resolution ionospheric technique for regional area high-accuracy global positioning system applications

A Global Positioning System includes a ground monitoring network having a plurality of dual frequency receivers that obtain ionospheric delay measurements to provide double difference ionospheric delay residuals. These double difference delay residuals are converted to zero differences based upon a new mathematical technique. The zero differences are fit to measurement epoch specific and transmitter specific mathematical surfaces (i.e. planes). These planes represent precise ionospheric delay corrections in the area of the ground monitoring network for a specific transmitter at the measurement epoch. The planes are then provided as correction information for use by inexpensive single frequency receivers to obtain highly accurate corrections for single frequency receivers by interpolating the correction planes to the location of the single frequency receiver. With this technique higher accuracy surveying results can be achieved with low cost single frequency receivers in real-time or in post-processing than what is currently achievable even with more expensive dual frequency receivers.

GPS correction methods, apparatus and signals

Methods and apparatus are described and illustrated for producing GPS corrections, comprising: collecting measurements from a plurality of network reference stations; determining network corrections from the measurements; determining residual errors at one or more vernier-cell reference stations; and preparing vernier-cell corrections to compensate the residual errors within a vernier-cell region. Network correction streams are described and illustrated which contain network corrections derived from a plurality of network reference stations and residual error corrections derived from one or more vernier-cell reference stations. Methods and apparatus are described for employing such network correction streams in a virtual reference station to produce corrections and/or virtual measurements for use in a GPS receiver.

Carrier phase differential GPS corrections network

Method and apparatus for providing GPS pseudorange correction information over a selected geographic region S with a diameter of up to 300 km with an associated inaccuracy no greater than 5 cm. N spaced apart GPS reference stations (N>4), whose location coordinates (u n ,v n ,w n ) are fixed and are known with high accuracy, are provided within or adjacent to the region R. Each reference station n(n=1, 2, . . . , N) receives GPS signals from at least four common-view GPS satellites, numbered m=1, 2, . . . , M (M≧4), computes its own GPS-determined location coordinates, compares these coordinates with its known location coordinates, determines the pseudorange corrections PRC(t;t0;m;n) for its GPS-determined location, and transmits these correction signals to a central station located within or adjacent to the region S. The central station retransmits the pseudorange correction signals throughout the region S. A mobile GPS station within or adjacent to the region S has stored within it the coordinates (u',v',w') of the GPS-determined last location of that mobile station and the spatial coordinates (u n (k),v n (k),w n (k)) (k=1, 2 , . . . , K; K>3) of K GPS reference stations within S that are closest to the last-determined location of that mobile station. The mobile station then computes the differential GPS corrections for the GPS-determined present location of that mobile station. Alternatively, the reference stations can transmit to the central station unprocessed GPS signals for determination of the pseudorange correction signals at the central station. This approach can be modified if the region R is two-dimensional, where only two coordinates u and v are needed, or if the region R is one-dimensional, where only one coordinate u is needed. Suitable algorithms for selection of the coefficients a k' are discussed.

Navigation satellite system positioning with enhanced satellite-specific correction information

The invention relates to methods, notably carried out by global or regional navigation satellite system (NSS) receivers, which involve receiving satellite-specific, nadir-angle dependent correction information associated with each of at least two NSS satellites among a plurality of NSS satellites. The correction information is useful to correct observed NSS signals, so as to mitigate the effects of satellite-specific, nadir-angle dependent biases in the NSS signals, and thus improve the performance of position determination systems. The invention also relates to methods for generating such correction information, to methods for designing a satellite, to NSS receivers, to apparatuses for generating correction information to be sent to the receivers, and to computer programs and storage mediums.

Ionosphere modeling apparatus and methods

Methods and apparatus which characterize the ionospheric error across a network of GNSS reference stations are presented. The method relies on dual-frequency phase measurements in a geometry-free linear combination. The data are filtered for ambiguities and the characteristic parameters of the ionosphere. In combination with filter results from other combinations of phase measurements (ionosphere free combination), the physically- based model provides rapid and reliable ambiguity resolution.

Gnss Signal Processing Methods and Apparatus

Methods and apparatus for processing of data from a network of GNSS reference stations are presented. An ionosphere-free, federated geometry filter is employed so that computation time increases only linearly with the increase in number of reference stations, significantly reducing processing time as compared to a centralized filter approach.

Autonomous projection of global navigation satellite orbits

In a method of autonomous orbit projection performed within a Global Navigation Satellite System (GNSS) receiver, distinct broadcast orbits are received over time from a GNSS satellite during operation of the GNSS receiver. A plurality of the distinct broadcast orbits are stored within the GNSS receiver. Within the GNSS receiver, a plurality of the stored broadcast orbits are converted into a time series of range data for the GNSS satellite. A projected orbit for the GNSS satellite is determined by utilizing the time series of range data as an input to an orbit projector of the GNSS receiver.

Method of compactly communicating ionospheric and tropospheric corrections in a network of global navigation system satellite receivers

A method of communicating corrections for information related to satellite signals among global navigation satellite system (GNSS) receivers is described. An ionosphere correction for ionosphere signal path delay is determined for a first satellite. This ionosphere correction is then compared to an ionosphere correction for ionosphere signal path delay for a satellite assumed to be directly over the receiver. The receiver then sends a message which includes only the difference between the ionosphere correction for the actual observation and the ionosphere correction for a satellite assumed to be at the zenith.

Continuous tracking counter for enabling cycle-slip free messages in a network of global navigation system satellite receivers

A method of communicating satellite tracking information among a network of global navigation satellite system receivers is described. The method includes determining at a first GNSS receiver which satellites in a constellation of satellites have been continuously tracked over a preceding selected time period, and for each such satellite determining its elevation with respect to the zenith. Only the elevation value for the lowest satellite in the set of satellites for which all satellites of higher elevation values have been continuously tracked over the selected time period is then transmitted to the second GNSS receiver. That receiver can then reconstruct the set of satellites which have been continuously tracked.

Compact transmission of GPS information using compressed measurement record format

A format for providing messages among GNSS apparatus includes providing a message identification block and a message body. The message identification block includes information specifying a message length and a message type block specifying a message type. Rather than sending all data from one apparatus to another, ambiguous observation data is sent to conserve bandwidth. At the sender a deconstruction of GNSS code and carrier observations using knowledge of the signal structure and constellation geometry, together with simplifications of atmospheric models, allows removal from the observation data of that information which can be implicitly understood or recreated by the recipient. This enables only the necessary information to be packed for transmission to the recipient.

System and method for providing information from reference stations to rover receivers in a satellite navigation system

Subscription GPS information service system

A GPS information service system for providing supplemental GPS correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS aiding information encrypted with subscription keys. A remote GPS subscription unit receives the key enablers for the subscription keys in service activation (SAM) messages for the services for which they have subscribed and then uses the subscription keys to decrypt the GPS aiding information. In order to prevent unauthorized access to the information, unsymmetrical signature generation and authentication algorithms are used for generating and authenticating signatures for the SAM messages.

Remote subscription unit for GNSS information

A GPS information service system for providing supplemental GPS correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS aiding information encrypted with subscription keys. A remote GPS subscription unit receives the key enablers for the subscription keys in service activation (SAM) messages for the services for which they have subscribed and then uses the subscription keys to decrypt the GPS aiding information. In order to prevent unauthorized access to the information, unsymmetrical signature generation and authentication algorithms are used for generating and authenticating signatures for the SAM messages.

Long baseline RTK using a secondary base receiver a non-continuous data link and a wireless internet connectivity

The system and method for long baseline RTK survey are disclosed. The system includes a primary base station (PBS), a secondary base station (SBS), a primary data link between the PBS and the SBS, and a secondary data link between the SBS and a rover. The PBS, the SBS, and the rover are equipped with satellite antennas for satellite navigational purposes, and with the wireless Internet data accesses devices (WIDAD). The long baseline vector between the PBS and the rover is established by combining the primary baseline vector between the SBS and the PBS and the secondary baseline vector between the SBS and the rover. The PBS is placed in a position with a known location. The PBS wirelessly downloads its logged set of data into the Internet server using the (PBS-WIDAD). The SBS determines its precise position coordinates by accessing wirelessly the PBS logged data on the Internet server using the (SBS-WIDAD). The rover determine its position coordinates in real time by accessing SBS directly using the (Rover-WIDAD), or determines its coordinates using the batch delayed delivery method by wirelessly accessing the SBS position coordinates published on the Internet server.

Subscription system for GPS information

A GPS information service system for providing supplemental GPS location correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS information encrypted with subscription keys. Remote GPS subscription unit receive the key enablers for the subscription keys in service activation (SAM) messages for the services for which they have subscribed and then use the subscription keys to decrypt the GPS information. In order to prevent unauthorized use, the SAM messages have signatures derived from identifications of the remote GPS subscription units using an unsymmetrical signature algorithm.

Compact transmission of GPS information using a compressed measurement recording format

Ein Format zur Bereitstellung von Nachrichten innerhalb einer GNSS-Vorrichtung umfasst das Bereitstellen eines Nachrichtenidentifizierungsblocks und eines Nachrichtenkörpers. Der Nachrichtenidentifizierungsblock umfasst Informationen zur Spezifizierung einer Nachrichtenlänge und einen Nachrichtentypblock zur Spezifizierung eines Nachrichtentyps. Anstatt dass alle Daten von einer Vorrichtung an eine andere gesendet werden, werden mehrdeutige Beobachtungsdaten zur Erhaltung der Bandbreite gesendet. Beim Absender ermöglicht eine Dekonstruktion des GNSS-Codes und der Trägerbeobachtungen unter Benutzung des Wissens der Signalstrukturen und Konstellationsgeometrie zusammen mit den Vereinfachungen der atmosphärischen Modelle das Entfernen derjenigen Information von den Beobachtungsdaten, die ohne weiteres verständlich ist oder durch den Empfänger nachgebildet werden kann. Dies ermöglicht, dass nur die notwendige Information zur Übertragung an den Empfänger paketiert wird. A format for providing messages within a GNSS device includes providing a message identifier block and a message body. The message identifier block includes information for specifying a message length and a message type block for specifying a message type. Instead of sending all the data from one device to another, ambiguous observation data is sent to preserve the bandwidth. At the sender, deconstruction of the GNSS code and carrier observations, using the knowledge of the signal structures and constellation geometry, along with the simplifications of the atmospheric models, enables removal of that information from the observation data which is readily understood or can be emulated by the receiver. This allows only the necessary information to be packetized for transmission to the receiver.

Hybrid ambiguity fixing method for GNSS real-time precise point positioning

本发明公开了一种用于GNSS实时精密单点定位的混合模糊度固定方法，属于卫星导航定位领域。针对实时应用场景下LAMBDA固定解可靠性不高、最优整数等变(Best Integer Equivariant，BIE)估计器固定效果强依赖于浮点模糊度精度等问题，提出一种依据判定条件在不同固定解之间自适应切换的精密单点定位(Precise Point Positioning，PPP)模糊度固定混合策略，以融合不同模糊度固定方法的优点并弥补相应的不足；适用于实时场景的稳定、可靠的PPP模糊度混合固定策略。

Phase Modulated Digital Position Detector

내용 없음

Positioning method and device

본 출원의 실시예들은 위치결정 방법 및 장치를 제공하고, 이 방법은: 모바일 디바이스에 대해 모호성 조정 파라미터를 설정하는 단계 - 모호성 조정 파라미터는 모바일 디바이스에 대한 가상 스테이션 관측값을 결정하는데 사용되는 모호성 변경 상태를 기록하는데 사용됨 -; 제1 서빙 셀에서 모바일 디바이스의 제1 모호성 조정 파라미터에 기초하여 제1 프라이머리 기준 스테이션의 관측값을 조정하여, 제1 가상 스테이션 관측값을 생성하는 단계 - 제1 프라이머리 기준 스테이션은 제1 서빙 셀의 프라이머리 기준 스테이션이고, 제1 가상 스테이션 관측값은 제1 서빙 셀에서 모바일 디바이스를 위치결정하는데 사용됨 -; 및 제1 가상 스테이션 관측값을 모바일 디바이스에 송신하는 단계를 포함한다.

A method of Global Navigation Satellite System (GNSS) reference station integrity monitoring and a GNSS reference station integrity system

GNSS 기준 국 무결성 감시 방법에 있어서는, GNSS 기준 국과 연관된 위치에 대해서 네트워크 실시간 운동학적(RTK:Real Time Kinematic) 정보가 액세스된다. 상기 GNSS 기준 국의 위치에 대해 로컬인 GNSS 정보의 적어도 하나의 측면이 상기 네트워크 RTK 정보의 대응하는 측면과 비교된다. 상기 GNSS 기준 국의 동작의 무결성에 대한 훼손의 발생을 표시하기 위해서, 상기 비교의 결과를 감시한다. In the GNSS reference station integrity monitoring method, the network real time kinematic (RTK) information is accessed for the location associated with the GNSS reference station. At least one aspect of the GNSS information that is local to the location of the GNSS reference station is compared with a corresponding side of the network RTK information. The result of the comparison is monitored to indicate the occurrence of corruption in the integrity of the operation of the GNSS reference station.

Controlling stream of periodic auxiliary data

FIELD: physics, computer engineering. SUBSTANCE: invention relates to positioning technologies. Each preparation of periodic auxiliary data includes session identification such that related messages upon delivery of periodic auxiliary data can be linked to each other at the receiving end. Any session modifications are processed by identifying a periodic session such that changes in delivery of auxiliary data can indicate the correct session. EFFECT: enabling efficient replacement of a virtual reference receiver within the same auxiliary data transmission session to ensure continuity of reference measurements by performing soft handover. 64 cl, 9 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК G01S 19/05 (11) (13) 2 524 177 C2 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012146409/07, 11.04.2011 (24) Дата начала отсчета срока действия патента: 11.04.2011 (72) Автор(ы): ВИРОЛА Лаури (FI), ХАЛИВААРА Исмо (FI) (73) Патентообладатель(и): Нокиа Корпорейшн (FI) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.05.2014 Бюл. № 14 R U 12.04.2010 US 61/323,298 (45) Опубликовано: 27.07.2014 Бюл. № 21 2008113698 A3, 25.09.2008. RU 2263412 C2, 27.10.2005. US 2009109090 A1, 30.04.2009. US 2009262016 A1, 22.10.2009. WO 2009129844 A1, 29.10.2009. US 2009135057 A1, 28.05.2009. WO 2006043123 A1, 27.04.2006 (86) Заявка PCT: C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.11.2012 FI 2011/050308 (11.04.2011) (87) Публикация заявки PCT: 2 5 2 4 1 7 7 WO 2011/128504 (20.10.2011) R U 2 5 2 4 1 7 7 (56) Список документов, цитированных в отчете о поиске: WO 2008142485 A1, 27.11.2008. WO Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) УПРАВЛЕНИЕ ПОТОКОМ ПЕРИОДИЧЕСКИХ ВСПОМОГАТЕЛЬНЫХ ДАННЫХ (57) Реферат: Изобретение относится к области технологий данных включает идентификацию сеанса так, позиционирования. Техническим результатом чтобы связанные сообщения ...

RTK-GPS survey system

PERIODIC AUXILIARY DATA FLOW MANAGEMENT

1. Способ, включающий:прием сообщения предоставления, включающего периодические вспомогательные данные, причем упомянутое сообщение предоставления связано с первой транзакцией;передачу сообщения запроса, запрашивающего модифицированные периодические вспомогательные данные; иприем сообщения предоставления, включающего модифицированные периодические вспомогательные данные, причем упомянутое сообщение предоставления связано с первой транзакцией;при этом упомянутые сообщения связаны параметром идентификации периодического сеанса.2. Способ по п.1, отличающийся тем, что периодические вспомогательные данные включают первые вспомогательные данные, связанные с первым опорным приемником.3. Способ по п.2, отличающийся тем, что запрос модификации периодических вспомогательных данных включает запрашивание вторых вспомогательных данных, связанных со вторым опорным приемником.4. Способ по п.3, отличающийся тем, что сообщение запроса, запрашивающее модификацию периодических вспомогательных данных, включает идентификатор второго опорного приемника.5. Способ по п.4, отличающийся тем, что идентификатор второго опорного приемника определяют из списка, включающего соседние опорные приемники.6. Способ по п.3, отличающийся тем, что сообщение запроса включает координаты второго опорного приемника.7. Способ по п.6, отличающийся тем, что сообщение запроса включает требование качества, которому должны удовлетворять параметры, связанные со вторым опорным приемником8. Способ по любому из пп.3-7, отличающийся тем, что периодические вспомогательные данные включают первые вспомогательные данные и вторые вспомогательные данные РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК G01S 19/05 (11) (13) 2012 146 409 A (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012146409/07, 11.04.2011 (71) Заявитель(и): Нокиа Корпорейшн (FI) Приоритет(ы): (30) Конвенционный приоритет: 12.04.2010 US 61/323,298 (85) Дата начала рассмотрения заявки PCT на национальной фазе ...

GPS rover station having position dithering for controlling accuracy of secure positions

A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established reference positions and measuring reference phases. The positioning system or the rover station selects a synthetic offset vector and uses the synthetic offset vector for inferring synthetic reference phases to a synthetic position. The rover station uses the synthetic reference phases with actual or virtual reference positions for determining a rover position having an added positional error controlled by the synthetic offset vector. For another embodiment a secure rover station dithers a secure position with a synthetic offset vector for providing an unsecure rover position having the added positional error.

GPS reference system providing a synthetic offset vector for dithering a rover station position

A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established reference positions and measuring reference phases. The positioning system or the rover station selects a synthetic offset vector and uses the synthetic offset vector for inferring synthetic reference phases to a synthetic position. The rover station uses the synthetic reference phases with actual or virtual reference positions for determining a rover position having an added positional error controlled by the synthetic offset vector. For another embodiment a secure rover station dithers a secure position with a synthetic offset vector for providing an unsecure rover position having the added positional error.

GPS reference system providing synthetic reference phases for controlling accuracy of high integrity positions

A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established reference positions and measuring reference phases. The positioning system or the rover station selects a synthetic offset vector and uses the synthetic offset vector for inferring synthetic reference phases to a synthetic position. The rover station uses the synthetic reference phases with actual or virtual reference positions for determining a rover position having an added positional error controlled by the synthetic offset vector. For another embodiment a secure rover station dithers a secure position with a synthetic offset vector for providing an unsecure rover position having the added positional error.

Position determination of a cellular device using carrier phase smoothing

A Global Navigation Satellite System (GNSS) chipset embedded within the cellular device is accessed. The GNSS chipset calculates raw observables that include raw pseudoranges and carrier phase information. The raw observables are extracted from the GNSS chipset for processing elsewhere in the cellular device outside of the GNSS chipset. Smoothed pseudoranges are provided by smoothing the raw pseudoranges based on the carrier phase information. The accessing, the extracting and the providing are performed by one or more hardware processors located in the cellular device and outside of the GNSS chipset.

A kind of positioning survey attitude positioning method based on double antenna GPS

本发明基于双天线GPS的定位测姿方法，在刚性载体上呈几何分布设置两个GPS信号接收天线且对应设置两台接收机，使得两个GPS信号接收天线构成了一个二维基线向量；利用两个GPS信号接收天线的真实坐标值求得基线向量 b A,B ；利用整周单差模糊度求得基线向量 A,B ；如果基线向量 b A,B 和 A,B 乘积的平方根值与基线向量真实长度的差的绝对值小于阈值e 1 ，则采用基线向量 b A,B 的坐标计算出刚性载体的二维坐标航向角α与俯仰角β，即完成刚性载体的定位测姿。本发明的有益技术效果是通过两种不同方法求解基线向量确定姿态，通过设计程序语言验证算法的可行性，保证了求解整周模糊度的快速性与准确性，有效提高了载体定位测姿的准确性和及时性。

IMPROVEMENTS TO REAL-TIME RADIO-SATELLITE LOCATION METHODS AND SYSTEMS, IN PARTICULAR OF THE GPS TYPE