Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8130. Отображено 100.
08-03-2012 дата публикации

Apparatus and method for ultra-fast gnss initial positioning scheme with peer assistance, and recording medium thereof

Номер: US20120056781A1
Автор: Seung-Hyun Kong, Wooseok Nam
Принадлежит: Korea Advanced Institute of Science and Technology KAIST

A method and an apparatus for acquiring an ultra-fast global navigation satellite systems (GNSS) initial position with peer assistance are disclosed. The apparatus includes a communication unit configured to receive assistance generated using a distance from a master terminal to a slave terminal and frequency error of a counterpart's terminal, a communication signal system configured to immediately receive immediately necessary information of the assistance, a Global Positioning System (GPS) receiver configured to rapidly search for a GPS satellite signal using the assistance and continuously track the GPS satellite signal so as to extract a pseudorange, and a computation processor configured to compute the position of the slave terminal using the assistance and the pseudorange. By this configuration, it is possible to perform fast initial position measurement as compared to the existing A-GPS technique, achieve direct communication between two GPS receivers regardless of presence/absence of a mobile communication network, and solve various limitations of the A-GPS technique.

Подробнее
Номер записи: 1
10-05-2012 дата публикации

Access point, mobile terminal, global navigation satellite system using the access point, and method of providing position information using the access point

Номер: US20120112960A1
Автор: In-One Joo, Sang-Uk Lee
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An access point (AP), a mobile terminal, a global navigation satellite system (GNSS), and a method of providing position information using the AP are provided. The AP may be equipped with or connected to a GNSS receiver, and the GNSS may precisely determine the position of the mobile terminal using auxiliary satellite navigation information that is generated by the GNSS receiver.

Подробнее
Номер записи: 2
17-05-2012 дата публикации

Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas

Номер: US20120122479A1
Автор: Jeffrey Thomas Martin, Lance Douglas Pitt, Leslie Johann Lamprecht
Принадлежит: TeleCommunication Systems Inc

Locating satellites (e.g., GPS) are culled into a preferred group having a longest dwell time based on a time passing through an ellipsoid arc path through a cone of space, and communicated to mobile devices within a particular region (e.g., serviced by a particular base station). The culled locating satellites may select those visible, or more preferably those locating satellites currently within a cone of space above the relevant base station are selected for communication by a mobile device within the service area of the base station. The inverted cone of space may be defined for each antenna structure for any given base station, and each has 360 degrees of coverage, or less than 360 degrees of coverage, with relevant locating satellites. Thus, cell sites may be specifically used as reference points for culling the ephemeris information used to expedite Assisted GPS location determinations.

Подробнее
Номер записи: 3
12-07-2012 дата публикации

Gps pre-aquisition for geotagging digital photos

Номер: US20120176510A1
Автор: David Noel Vanden Heuvel, Ngoc Bich Ngo, Piotr Konrad Tysowski
Принадлежит: Research in Motion Ltd

A handheld electronic device, such as a GPS-enabled wireless communications device with an embedded camera, a GPS-enabled camera-phone or a GPS-enabled digital camera, determines whether ephemeris data needs to be obtained for geotagging digital photos taken with the device. By monitoring user activity with respect to the camera, such as activation of the camera, the device can begin pre-acquisition of a GPS position fix by obtaining needed ephemeris data before the photograph is actually taken. This GPS pre-acquisition improves the likelihood that a position fix (GPS lock) is achieved by the time the photo is taken (to enable immediate geotagging). Alternatively, the photo can be geotagged retroactively by appending the current location to the metadata tag associated with the digital photo. An optional acquisition status indicator can be displayed on a user interface of the device to indicate that a position fix is being obtained.

Подробнее
Номер записи: 4
19-07-2012 дата публикации

Method and system for determining clock corrections

Номер: US20120182181A1
Автор: Liwen L. Dai, Michael A. Zeitzew, Yiqun Chen, Yujie Zhang
Принадлежит: Deere and Co

A satellite clock error is determined for each navigation satellite based on the pseudo-range code measurements, the carrier phase measurements, and broadcast satellite clock errors provided by a receiver network. Differences are determined between the computed satellite clock errors and the broadcast clock errors for each satellite. For each constellation, a clock reference satellite is selected from among the navigation satellites, where the clock reference satellite has the median value of clock error difference for that satellite constellation. A correction is determined for the broadcast clock error by applying a function of the reference satellite's clock error to the broadcast clock error for each satellite in the one or more constellations.

Подробнее
Номер записи: 5
19-07-2012 дата публикации

Implementations for wireless signal processing

Номер: US20120183023A1
Автор: Daniel F. Filipovic, Jifeng Geng
Принадлежит: Qualcomm Inc

Implementations including methods, apparatuses, and systems relating to processing wireless signals are disclosed. Such processing may be performed, at least in part, at a receiver platform receiving such wireless signals and/or at a remote computing platform to obtain information that may be used in a variety of contexts, including cellular communications, radio-frequency identification, and navigation. In some techniques, modulated signals are received at a receiver platform, and at least partially demodulated and used to generate data. The data is transmitted to one or more network resources, and processed to obtain information based on the information in the modulated signals.

Подробнее
Номер записи: 6
16-08-2012 дата публикации

Use of self and neighboring vehicle gps/gnss data to estimate current and approaching sky visibility changes

Номер: US20120209519A1
Автор: Chaminda Basnayake
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method and system for creating a sky visibility map, using data from a vehicle and its neighbors. A host vehicle with satellite-based navigation capability measures the quality of signals it receives from available satellites, where azimuth and elevation angles of the satellites are known from an ephemeris or almanac. The host vehicle also receives satellite signal data from surrounding vehicles via vehicle-to-vehicle communication. Using data from all of the vehicles, a sky visibility map is constructed, indicating where obstructions to satellite visibility exist for different locations. The sky visibility map is used to anticipate satellite signal quality. A driving environment classification can be used to configure other vehicle systems. The sky visibility map can also be constructed without using data from surrounding vehicles; the host vehicle can store its satellite signal data long-term and use it to estimate satellite visibility when returning to a location previously visited.

Подробнее
Номер записи: 7
30-08-2012 дата публикации

Precise Absolute Time Transfer From A Satellite System

Номер: US20120218147A1
Автор: David A. Whelan, Gregory M. Gutt
Принадлежит: Boeing Co

Various techniques are provided for obtaining a precise absolute time using a satellite system. In one example, a method of transferring precise absolute time from a satellite to a device includes receiving data from a messaging channel, wherein the data has a frame structure. The method also includes using the data to identify the satellite and a position of the satellite, correcting for signal time of flight using the satellite identity and the position, and using the data as a time reference to align a receiver clock to the frame structure. The method also includes, with the receiver clock aligned to the frame structure, receiving a precision time signal from the satellite, wherein the precision time signal comprises a periodic repeating code. The method also includes determining a timing phase of the code and using the timing phase to determine a precise absolute time.

Подробнее
Номер записи: 8
13-09-2012 дата публикации

Method and Apparatus for Enhanced Autonomous GPS

Номер: US20120229335A1
Автор: Charles Abraham, Frank van Diggelen, Sergei Podshivalov
Принадлежит: Broadcom Corp, Global Locate Inc

Method and apparatus for locating position of a remote receiver is described. In one example, long term satellite tracking data is obtained at a remote receiver. Satellite positioning system (SPS) satellites are detected. Pseudoranges are determined from the remote receiver to the detected SPS satellites. Position of the remote receiver is computed using the pseudoranges and the long term satellite tracking data. SPS satellites may be detected using at least one of acquisition assistance data computed using a previously computed position and a blind search. Use of long term satellite tracking data obviates the need for the remote receiver to decode ephemeris from the satellites. In addition, position of the remote receiver is computed without obtaining an initial position estimate from a server or network.

Подробнее
Номер записи: 9
06-12-2012 дата публикации

Distributed A-GNSS Positioning of Static Devices

Номер: US20120306693A1
Автор: Stephen William Edge
Принадлежит: Qualcomm Inc

Method and apparatus for determining locations of static devices are disclosed. The method includes identifying a plurality of static devices, obtaining location measurements by the plurality of static devices at different times, and determining locations of the plurality of static devices using the location measurements obtained at the different times. The method of determining locations of the plurality of static devices includes determining a group location of the plurality of static devices based on GNSS pseudo range measurements contributed by the one or more static devices, where the group location is near a centroid of the plurality of static devices weighted by the number of GNSS pseudo range measurements contributed by each of the plurality of static devices. The method of determining locations of the plurality of static devices further includes sharing a common time reference among the plurality of static devices.

Подробнее
Номер записи: 10
28-03-2013 дата публикации

PRECISE GPS DEVICE AND METHOD USING A WIRELESS AP

Номер: US20130076562A1
Автор: Ahn Do Seob, Lee Jae Eun, LEE Sang Uk
Принадлежит: Electronics and Telecommunications Research Institute

In the present invention, a GPS reference station generates and transmits GPS error correction information for each wireless AP and a user terminal recognizes the GPS error correction information to be used for correcting reception information of a user terminal GPS receiver, thereby acquiring precision positioning performance. That is, a precision poisoning system of the present invention includes: a GPS reference station generating navigation correction information for a wireless access point by receiving a first satellites' signal from a GPS satellite with respect to the reference station and transmitting the generated navigation correction information to the wireless access point; a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; and a user terminal receiving a second satellites' signal from the GPS satellite with respect to the user terminal and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information. 1. A precision positioning system , comprising:a GPS reference station generating navigation correction information for a wireless access point by receiving first satellites' signal from a GPS satellite and transmitting the generated navigation correction information to the wireless access point;a wireless access point receiving the navigation correction information from the GPS reference station and transmitting the received information to a user terminal; anda user terminal receiving second satellites' signal from the GPS satellite and recognizing the navigation correction information from the wireless access point to generate precise user position information on the basis of the second satellite signal and the navigation correction information.2. The system of claim 1 , wherein the wireless ...

Подробнее
Номер записи: 11
11-04-2013 дата публикации

Portable Communication Terminals and Methods for Cooperative Positioning Support During Poor Satellite Coverage

Номер: US20130088384A1
Автор: Jokinen Altti Samuli, SYRJARINNE Jari Tapani
Принадлежит: Nokia Corporation

In one or more embodiments described herein, there is provided an apparatus including a memory having computer code stored thereon, and a processor. The code is configured to cause the apparatus to: receive partial GNSS data from one or more GNSS satellites relating to the geographical location of a first portable electronic device, wherein the received partial GNSS data is insufficient for determining the geographical location of the first portable electronic device; communicate with one or more further portable electronic devices in proximity to the first portable electronic device to access partial GNSS data relating to the geographical location of the respective further portable electronic devices; and use the accessed partial GNSS data of the further portable electronic devices to supplement the received partial GNSS data of the first portable electronic device to thereby determine the geographical location of the first device. 1. An apparatus comprising:at least one memory; andat least one processor, wherein the memory comprises computer code stored thereon, the code being configured to, when run on the processor, cause the apparatus to perform at least:receiving partial GNSS data from one or more GNSS satellites relating to the geographical location of a first portable electronic device, wherein the received partial GNSS data is insufficient for determining the geographical location of the first portable electronic device;communicating with one or more further portable electronic devices in proximity to the first portable electronic device to access partial GNSS data relating to the geographical location of the respective further portable electronic devices;measuring a synchronisation error between the first and respective further devices based on a comparison between the respective further and first device partial GNSS data to allow for synchronisation of the respective further and first device partial GNSS data; andusing the accessed partial GNSS data of ...

Подробнее
Номер записи: 12
11-04-2013 дата публикации

Space Based Augmentation System Adapted for Improving the Accuracy and Reliability of Data Provided by a Satellite Navigation System and Associated Method

Номер: US20130088385A1
Автор: Bernard Charlot, Gonzagues BERTIN DE LA HAUTIERE, Sebastien Trilles
Принадлежит: Thales SA

A space-based augmentation system improving the accuracy and reliability of satellite navigation system data includes, each at least: a ground station transmitting data to satellites, a ground station receiving signals transmitted by a satellite and by a satellite equipped with transmitting/receiving means for transmitting data received from the ground transmitting station for a given geographical area; two ground computing centres, redundantly and respectively calculating navigation message streams and transmitting to the ground transmitting station navigation message streams and information representative of Quality of Service provided by the system, from signals transmitted by the ground receiving stations. The computing centres, ground receiving station and ground transmitting station are connected by a communication network. The ground transmitting station selects navigation message streams of a master computing centre according to information representative of respective Quality of Service of said computing centres, and said computing centres are synchronized on said master computing centre.

Подробнее
Номер записи: 13
18-04-2013 дата публикации

DUAL FREQUENCY RECEIVER FOR SATELLITE BASED POSITIONING AND ASSOCIATED METHOD OF RECEPTION

Номер: US20130093620A1
Автор: REVOL Marc
Принадлежит: THALES

Dual-frequency (L, L) receiver for satellite-based positioning, comprising a main measurement channel (L) and a secondary channel (L) for a calculation for correction of ionospheric propagation robust to differential errors linked to the local reception environment of the signals, each channel comprising a code generator, a carrier phase generator, integrators, phase and code discriminators, a code phase numerically-controlled oscillator (NCOC), a carrier phase numerically-controlled oscillator (NCOP), carrier phase loop matched filtering means, and code phase loop matched filtering means, comprising, furthermore: 11212. Dual-frequency (L , L) receiver for satellite-based positioning , comprising a main measurement channel (L) and a secondary channel (L) for a calculation for correction of ionospheric propagation robust to differential phase errors linked to the local reception environment of the signals , each channel comprising a code phase generator , a carrier phase generator , integrators , phase and code discriminators , a code phase numerically-controlled oscillator (NCOC) , a carrier phase numerically-controlled oscillator (NCOP) , carrier phase loop matched filtering means , and code phase loop matched filtering means , characterized in that it comprises:{'b': 3', '3', '1', '2, 'means for determining the respective code and carrier phase errors in the said main and secondary channels comprising means of interspectral correlation (INT, M) of the signals of the main and secondary channels (L, L) already correlated by the local code, after frequency compensation of the relative Doppler shifts of the said signals; and'}{'b': 1', '2, 'respective feedback loops (B, B) for the said code and carrier phase errors in the said main and secondary channels.'}23312. Receiver according to claim 1 , in which the said determination means comprise means for compensating for the output signal of the said dedicated means of interspectral correlation (INT claim 1 , M) by the ...

Подробнее
Номер записи: 14
25-04-2013 дата публикации

Satellite Based Positioning

Номер: US20130099965A1
Автор: Sairo Hanna, Syrjarinne Jari
Принадлежит: Nokia Corporation

The invention relates to a positioning of an assembly . An assembly comprises a GNSS receiver and a wireless communication module and may exchange GNSS information with other assemblies using cellular or non-cellular links. Relative positions between assemblies are determined based on GNSS measurements at the assemblies . An API supports a communication between a GNSS receiver and a wireless communication module . A positioning is made controllable by a user interface . A positioning server may forward information from one assembly to the other or take care of the position computations for assemblies . An absolute positioning is enabled by means of a GNSS receiver arranged at a known location and coupled to such a server . A network of positioning servers enables an information exchange between positioning servers 179-. (canceled)80. A method comprising at a server:providing a request for code and carrier-phase measurements on satellite signals for transmission to a mobile unit, wherein said request is applicable for requesting measurements on satellite signals of a single global navigation satellite systems including at least one of a global positioning system, a global orbiting navigation satellite system and Galileo as well as for requesting measurements on satellite signals of a plurality of global navigation satellite systems including at least two of a global positioning system, a global orbiting navigation satellite system and Galileo; andreceiving code and carrier-phase measurements in response to said request.81. An apparatus comprising a memory storing a software code and a processor , the memory and the software code configured to , with the processor , cause a server at least to perform:a request for code and carrier-phase measurements on satellite signals for transmission to a mobile unit, wherein said request is applicable for requesting measurements on satellite signals of a single global navigation satellite systems including at least one of a global ...

Подробнее
Номер записи: 15
25-04-2013 дата публикации

METHOD AND SYSTEM FOR PROPAGATING GNSS ASSISTANCE DATA AMONG COMMUNICATION DEVICES

Номер: US20130099966A1
Автор: ABRAHAM Charles, BUER Mark, GARRETT David, Karaoguz Jeyhan, LUNDGREN David Albert, MURRAY David
Принадлежит: BROADCOM CORPORATION

A communication device within a GNSS group propagates GNSS assistance data to one or more other communication devices in the GNSS group. The GNSS assistance data includes ephemeris received from one or more GNSS satellites and/or predicted ephemeris. As a source device, the communication device generates, and/or acquires from other resources such as a remote location server, the predicted ephemeris. As a destination device, the communication device receives existing GNSS assistance data from a source device and/or other communication devices in the GNSS group. A GNSS position for the communication device and corresponding time information are used to refresh the received GNSS assistance data. In instances where the communication device further acts as a relay device, the refreshed GNSS assistance data is relayed to other communication devices over wired and/or wireless direct device-to-device connections utilizing appropriate communication technologies such as WiFi, Bluetooth and/or Bluetooth low energy. 1. A method for communication , the method comprising:calculating, in a communication device, a position for the communication device utilizing Global Navigation Satellite Systems (GNSS) assistance data;refreshing the GNSS assistance data by incorporating the position for the communication device and corresponding time information; andpropagating the refreshed GNSS assistance data from the communication device to one or more communication devices.2. The method according to claim 1 , further comprising:establishing a device-to-device connection from the communication device to the one or more communication devices.3. The method according to claim 1 , wherein the propagating further comprises:utilizing a device-to-device connection to propagate the refreshed GNSS assistance data to the one or more communication devices.4. The method according to claim 1 , further comprising:receiving the GNSS assistance data from one or more GNSS satellites, wherein the GNSS ...

Подробнее
Номер записи: 16
09-05-2013 дата публикации

Pre-scaling of a-gps positioning accuracy data

Номер: US20130115973A1
Автор: Ari Kangas, Torbjörn WIGREN
Принадлежит: Telefonaktiebolaget LM Ericsson AB

A method in conjunction with positioning of a mobile terminal in a cellular telecommunication system is disclosed. According to the method, an end user's requested positioning accuracy for the positioning of the mobile terminal is determined ( 510 ). Also, an estimated confidence value for the positioning of the mobile terminal is determined ( 520 ), and so is a required confidence value for the end user ( 530 ). Then, a pre-scale value is produced ( 540 ) based on at least the estimated confidence value and the required confidence value. The pre-scale value is applied ( 550 ) to the requested positioning accuracy to obtain a pre-scaled requested positioning accuracy. Then, the pre-scaled requested positioning accuracy is sent ( 560 ) in the cellular telecommunication system towards the mobile terminal.

Подробнее
Номер записи: 17
23-05-2013 дата публикации

SATELLITE BASED AUGMENTATION SYSTEM AND SATELLITE BASED AUGMENTATION METHOD

Номер: US20130127661A1
Автор: Iwasaki Ryuichiro, Nozaki Yutaka
Принадлежит: NEC Corporation

Provided is a satellite based augmentation system comprising: a threshold value calculation unit which calculates a monitoring threshold value for determining whether or not a value of carrier to noise power density ratio (C/No) at a time when a pseudorange is measured on the basis of a signal from a GPS satellite is proper; and a pseudorange determination unit which determines whether or not the pseudorange has proper accuracy by comparing the C/No value and the monitoring threshold value. 110-. (canceled)11. A satellite based augmentation system comprising:a threshold value calculation unit which calculates a monitor threshold value for determining whether or not a value of carrier to noise power density ratio (C/No) at a time when a pseudorange is measured on the basis of a signal from a GPS satellite is proper; anda pseudorange determination unit which determines whether or not the pseudorange is of proper accuracy, by comparing the C/No value with the monitor threshold value.12. The satellite based augmentation system according to claim 11 , further comprising a reliability computation unit which calculates and outputs reliability of the signal from the GPS satellite used for the measurement of the pseudorange when the pseudorange determination unit determined the C/No value to be smaller than the monitor threshold value.13. The satellite based augmentation system according to claim 11 , wherein:the threshold value calculation unit calculates a frequency distribution of the C/No values with respect to a plurality of measured the pseudoranges, and calculates the monitor threshold value the monitor threshold value that a probability P_CN_min of the C/No value which takes frequency smaller than the monitor threshold value is equal to the sum of a missed-detection probability P_md_cno and a false alarm probability P_fa_cno, whereinthe missed-detection probability P_md_cno is a probability of situations where the properness of the pseudorange cannot be determined ...

Подробнее
Номер записи: 18
30-05-2013 дата публикации

Systems and methods for ip and voip device location determination

Номер: US20130135147A1
Автор: Richard Keegan, Richard M. Lee
Принадлежит: Iposi Inc

A method and system for precise position determination of general Internet Protocol (IP) network-connected devices. A method enables use of remote intelligence located at strategic network points to distribute relevant assistance data to IP devices with embedded receivers. Assistance is tailored to provide physical timing, frequency and real time signal status data using general broadband communication protocols. Relevant assistance data enables several complementary forms of signal processing gain critical to acquire and measure weakened or distorted in-building Global Navigation Satellite Services (GNSS) signals and to ultimately extract corresponding pseudo-range time components. A method to assemble sets of GNSS measurements that are observed over long periods of time while using standard satellite navigation methods, and once compiled, convert using standard methods each pseudo-range into usable path distances used to calculate a precise geographic position to a known degree of accuracy.

Подробнее
Номер записи: 19
06-06-2013 дата публикации

GNSS Signal Processing Methods and Apparatus

Номер: US20130141276A1
Автор: Artushkin Igor, Boriskin Alexey, Ivanov Dmitry, Kozlov Dmitry, Sunitsky Evgeny, Zyryanov Gleb
Принадлежит: TRIMBLE NAVIGATION LIMITED

Methods and apparatus are presented for determining position a GNSS rover antenna from single-frequency observations of GNSS signals collected at the antenna over multiple epochs and from correction data for at least one of the epochs. Coded raw data prepared from the single-frequency observations in a binary format are obtained and decoded to obtain decoded raw data. The decoded raw data are used to construct multiple epochs of measurement data of time, range and phase. Correction data are obtained for at least one of the epochs. The measurement data are processed with the correction data in a realtime kinematic positioning engine to obtain a position estimate for each of a plurality of epochs. 1. A method of determining a position of an antenna of a GNSS rover from single-frequency observations of GNSS signals collected at the antenna over multiple epochs and from correction data for at least one of the epochs , comprising:a. obtaining coded raw data prepared from the single-frequency observations in a binary format,b. decoding the coded raw data to obtain decoded raw data,c. using the decoded raw data to construct multiple epochs of measurement data of time, range and phase,d. obtaining correction data for at least one of the epochs,e. processing the measurement data with the correction data in a realtime kinematic positioning engine to obtain a position estimate for each of a plurality of epochs.2. The method of claim 1 , wherein the single frequency is the GNSS L1 frequency.3. The method of claim 1 , wherein the coded raw data are prepared by a consumer-quality GNSS receiver.4. The method of claim 1 , wherein the consumer-quality GNSS receiver comprises at least one of: a MobileMapper 10 GNSS receiver claim 1 , a SiRF GNSS receiver chip claim 1 , a Trimble Juno41 handheld having a Ublox chip claim 1 , and a Ublox chip.5. The method of claim 1 , wherein the consumer-quality GNSS receiver has at least one of the following characteristics: (a) narrow band RF front ...

Подробнее
Номер записи: 20
27-06-2013 дата публикации

Positioning support device and positioning support method

Номер: US20130162471A1
Автор: Miho Kikkawa, Takashi Suzuki, Tomoharu Aoki
Принадлежит: NTT DOCOMO INC

Provided is a positioning support device that provides approximate location information including more appropriate error radius information. With a positioning method (positioning support method) by a positioning support system 10 and a positioning system 1 including the positioning support system 10 , it is determined in a SUPL server 20 whether an error radius included in location information (approximate location information) of a base station device 70 acquired from a mobile communication network N 2 that is another communication network falls within a prescribed range. If out of the prescribed range, the error radius is updated to a predetermined value, and approximate location information including the updated error radius information is thereafter transmitted to a mobile station 60 for positioning computation. This makes it possible to provide approximate location information including more appropriate error radius information for positioning computation.

Подробнее
Номер записи: 21
27-06-2013 дата публикации

METHOD FOR DETERMINING A PROTECTION SPACE IN THE EVENT OF TWO SIMULTANEOUS SATELLITE FAILURES

Номер: US20130162472A1
Автор: Faurie Frederic, Giremus Audrey, Najim Mohamed
Принадлежит:

The present invention relates to a method for determining a protection space in the event of two faulty measurements of a pseudo-range between a satellite and a receiver for receiving signals transmitted by various satellites in a radio-navigation constellation, characterized in that said method includes the steps of: (a) determining, on the basis of the pseudo-ranges measured by the receiver, a test variable representative of the likelihood of a fault; (b) estimating, for each pair of pseudo-ranges from among the pseudo-ranges measured by the receiver and from the expression of the thus-obtained test variable, a set of minimum-bias pairs detectable for a given missed detection probability; (c) expressing, for each pair of pseudo-ranges, the estimated set of detectable minimum-bias pairs in the form of an equation defining an ellipse associated with the pair of pseudo-ranges in question; (d) expressing the equation of each ellipse in parametric coordinates and expressing each detectable associated minimum-bias pair on the basis of a single parameter; (e) projecting each of the thus-parameterized detectable minimum-bias pairs over at least one subspace of R3; (f) calculating, for each subspace and for each bias pair, the maximum position error induced by the bias pair; (g) selecting, for each subspace, the maximum from among all of the calculated maximum position errors, and transmitting the results of said selection outward. The present invention also relates to an integrity-monitoring system and to a vehicle therefor. 1. A method for determining a protection volume in the event of two faulty measurements of pseudorange between a satellite and a receiver receiving signals transmitted by different satellites of a radio-positioning constellation , characterised in that it comprises steps of:(a) Determining a test variable representative of the likelihood of a fault as a function of the pseudoranges measured by the receiver;(b) Estimating, for each pair of pseudoranges ...

Подробнее
Номер записи: 22
04-07-2013 дата публикации

METHOD AND DEVICE FOR DETECTING AND EXCLUDING MULTIPLE SATELLITE FAILURES IN A GNSS SYSTEM

Номер: US20130169478A1
Автор: Vourch Sebastien
Принадлежит: SAGEM DEFENSE SECURITE

According to a first aspect, the invention relates to a method for checking the integrity of position information output by a satellite (GNSS) positioning device () including a bank () of Kalman filters each producing a navigation solution (dX, dXi, dXn) from raw measurements of signals transmitted by the satellites, characterized in that the method comprises the steps of, for each filter in the bank: (i) correcting the navigation solution produced by the filter according to an estimate of the impact of a failure of a satellite on the navigation solution; (ii) calculating a cross-innovation reflecting the deviation between an observation corresponding to a raw measurement from a satellite not used by the filter and an a posteriori estimate of said observation from the navigation solution produced by the filter and corrected in accordance with step (i); and (iii) performing a statistical test of the cross-innovation in order to declare whether or not the satellite, the raw measurement of which is not used by the filter, is faulty. 1130. A method for checking the integrity of pieces of position information delivered by a satellite positioning device () (GNSS) comprising a bank () of Kalman filters each elaborating a navigation solution (dX , dXi , dXn) from raw measurements of signals transmitted by satellites , characterized in that for each filter of the bank , it includes the steps of:(i) correcting the navigation solution elaborated by the filter according to an estimate of the impact of a failure of a satellite on the navigation solution;(ii) calculating a cross-innovation reflecting the deviation between an observation corresponding to a raw measurement from a satellite not used by the filter and an a posteriori estimate of said observation from the navigation solution elaborated by the filter and corrected according to step (i);(iii) conducting a statistical test of the cross-innovation in order to declare whether the satellite, for which the raw measurement is ...

Подробнее
Номер записи: 23
11-07-2013 дата публикации

Method and Device for Deciding Location of Terminal in a Wireless Communication System

Номер: US20130176883A1
Автор: Jaehoon Chung, SEUNGHEE HAN
Принадлежит: LG ELECTRONICS INC

The present invention relates to a method for deciding a location of a terminal in a wireless communication system, and provides the method for deciding the location comprising the following steps: receiving reference signals from a plurality of base stations; and transmitting reference signal time difference (RSTD) which is received from the plurality of base stations, wherein the reference signal is mapped according to a predetermined pattern inside a subframe.

Подробнее
Номер записи: 24
18-07-2013 дата публикации

Autonomous orbit propagation system and method

Номер: US20130181866A1
Автор: Dave Cayer, Eric Derbez, Guylain Roy-MacHabee
Принадлежит: RX NETWORKS Inc

A method of predicting a location of a satellite is provided wherein the GPS device, based on previously received information about the position of a satellite, such as an ephemeris, generates a correction acceleration of the satellite that can be used to predict the position of the satellite outside of the time frame in which the previously received information was valid. The calculations can be performed entirely on the GPS device, and do not require assistance from a server. However, if assistance from a server is available to the GPS device, the assistance information can be used to increase the accuracy of the predicted position.

Подробнее
Номер записи: 25
01-08-2013 дата публикации

SATELLITE RECEIVER AND SYSTEM EMPLOYING SERVER FOR IDENTIFYING SATELLITE STATE

Номер: US20130194132A1
Автор: CHUNG Do-Hyoung, Kim Woo-young, LEE Seung-Yoon
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a system and method for transmitting a satellite state to a satellite receiver to determine use or non-use of a satellite signal in positioning estimation. A satellite navigation system includes at least one satellite, a satellite control center for controlling the at least one satellite, and a server. The server transmits satellite state information about the at least one satellite identified through the satellite control center to the satellite receiver. The satellite receiver restricts the use of the satellite signal for positioning estimation when the satellite state is identified as erroneous. 1. A method operative in a satellite receiver , comprising:receiving satellite state information from a server;determining whether an erroneous satellite is present based on the satellite state information received from the server; andwhen at least one erroneous satellite is present, restricting the use of a satellite signal received from the at least one erroneous satellite.2. The method of claim 1 , wherein receiving the satellite state information includes:receiving extended ephemeris data from the server; andidentifying satellite state information included in the extended ephemeris data.3. The method of claim 1 , further comprising:prior to receiving the satellite state information from the server, receiving satellite state information from a transmitting satellite;determining whether the transmitting satellite is erroneous based on the satellite state information received from that satellite; andrestricting the use of a satellite signal received from the transmitting satellite when it is determined to be erroneous.4. The method of claim 1 , further comprising:prior to receiving the satellite state information from the server, determining whether a satellite state request event occurs; if so, requesting satellite state information from the server.5. The method of claim 4 , wherein determining whether the satellite state request event occurs is based on at ...

Подробнее
Номер записи: 26
08-08-2013 дата публикации

METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION

Номер: US20130201056A1
Автор: Biacs Zoltan, Gum Arnold Jason, Moeglein Mark Leo, Sheynblat Leonid, Wengler Michael James
Принадлежит: QUALCOMM Incorporation

A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. 1. A method by a mobile station of locating a satellite , the method comprising:receiving by the mobile station coarse orbit data of the satellite including a coarse estimate of the satellite's position;generating by the mobile station a coarse satellite position of the satellite using at least the coarse estimate of the satellite's position;receiving by the mobile station coarse orbit correction data of the satellite calculated using the coarse orbit data and predicted orbit data of the satellite, wherein the calculation of the coarse orbit correction data occurs at an entity geographically distinct from the mobile station, and wherein the predicted orbit data is more accurate than the coarse orbit data;reconstructing by the mobile station at least one spatial correction value to the coarse orbit data at least based on the coarse orbit correction data; anddetermining by the mobile station a corrected position of the satellite using the coarse satellite position of the satellite and the at least one spatial correction value, wherein the corrected position of the satellite is more accurate than the coarse satellite position.2. The method of claim 1 , wherein the coarse orbit data ...

Подробнее
Номер записи: 27
05-09-2013 дата публикации

RECEIVING METHOD AND RECEIVING APPARATUS

Номер: US20130229304A1
Автор: MURAKI Kiyotaka, Sasahara Hideo
Принадлежит: SEIKO EPSON CORPORATION

In a baseband process circuit unit, a demodulation unit demodulates a received satellite signal which carries a navigation message to obtain a demodulated data. Further, an error bit detection unit detects an error bit from among the demodulated data using a parity code included in the demodulated data. An inconsistent bit detection unit detects an inconsistent bit by comparing the demodulated data with prescribed comparison data. An adoption determination unit determines whether or not to adopt the demodulated data, based on a difference between the error bit and the inconsistent bit. In addition, a correction unit corrects the demodulated data, in a case where the demodulated data is determined to be adopted by the adoption determination unit. 1. A receiving method comprising:receiving a satellite signal which carries a navigation message;demodulating the received satellite signal to obtain a demodulated data;detecting an error bit from among the demodulated data using an error detection code included in the demodulated data;detecting an inconsistent bit, comparing the demodulated data with prescribed comparison data;determining whether or not to adopt the demodulated data, based on a difference between the error bit and the inconsistent bit; andcorrecting the demodulated data, in a case where the demodulated data is determined to be adopted by the determination.2. The receiving method according to claim 1 ,wherein the demodulated data comprises word data for each predetermined transport data unit, following a data format of the navigation message,wherein the detecting of the error bit includes detecting the error bit for each word data,the detecting of the inconsistent bit includes comparing the demodulated data with the comparison data with respect to word data in which an orbit calculation parameter is stored, andthe determining whether or, not to adopt the demodulated data includes determining whether or not to adopt the word data in which the orbit ...

Подробнее
Номер записи: 28
12-09-2013 дата публикации

Adaptive Method for Estimating the Electron Content of the Ionosphere

Номер: US20130234886A1
Автор: Gonzague BERTIN DE LA HAUTIERE, Mathias Van Den Bossche, Sebastien Trilles
Принадлежит: Thales SA

An adaptive method for estimating the electron content of the ionosphere comprises: collecting a set of measurements carried out by a plurality of beacons receiving radio frequency signals transmitted by a plurality of transmitting satellites; computing coordinates of the points of intersection between the transmission axis of the signals and a surface surrounding the Earth, and of a vertical total electron content determined at each of these points; computing a vertical total electron content for each of the nodes of an initial mesh of the surface; a statistical dispersion analysis of the vertical total electron content; a computation step making it possible to define a suitable statistical estimator, or a computation step making it possible to generate a suitable mesh of the surface; a statistical error analysis making it possible to select between a validation of the adaptation of the method and a stopping of the method.

Подробнее
Номер записи: 29
26-09-2013 дата публикации

METHOD FOR DETECTING AND EXCLUDING MULTIPLE FAILURES IN A SATELLITE

Номер: US20130249734A1
Автор: Faurie Frederic, Giremus Audrey, Najim Mohamed
Принадлежит:

The present invention relates to a method for detecting and excluding at least one pseudo-range measured between a satellite and a receiver for receiving signals transmitted by different satellites of a radio-positioning constellation when said pseudo-range is faulty, characterized in that said method includes the steps of: (a) determining an estimation of the position of the receiver from the pseudo-ranges measured by the receiver, (b) estimating, from the thus-estimated position, biases in the measured pseudo-ranges; (c) processing the thus-obtained biases in order to derive a value representative of the probability of a fault for each pseudo-range; (d) preselecting, on the basis of the resulting values, a given number of pseudo-ranges which are most likely to be faulty; (e) determining, for each combination of pseudo-ranges from among the thus-preselected pseudo-ranges, a value of a test variable representative of the likelihood the combination is faulty; (f) selecting, on the basis of the values of the thus-obtained test variables, at least one combination of pseudo-ranges which are most likely to be faulty; and (g) comparing the test variable associated with the selected combination with a predetermined threshold, and transmitting the signals to the receiver or outward on the basis of the result of said comparison. The invention also relates to an integrity-monitoring system and to a vehicle therefor. 1. A method for detection and exclusion of at least one pseudorange measured between a satellite and a receiver receiving signals emitted by different satellites of a radio-positioning constellation , when this pseudorange is faulty , characterised in that it comprises steps of:(a) Determining estimation of the position of the receiver from the pseudoranges measured by the receiver;(b) Estimating, from the accordingly estimated position, biases in the pseudoranges measured;(c) Processing accordingly obtained biases to deduce therefrom a value representative of the ...

Подробнее
Номер записи: 30
17-10-2013 дата публикации

Enhancement of the Integrity Concept of a Satellite Navigation System

Номер: US20130271315A1
Автор: TRAUTENBERG Hans
Принадлежит: Astrium GmbH

A method for determining the integrity risk at an alert limit of a position solution determined with a satellite navigation system involves calculating a first integrity risk at the alert limit assuming that one satellite j of the satellites is faulty. A first position solution is determined with the signals from all of the satellites and a second position solution is determined with the signals from all of the satellites except for the signal received from the satellite j. A difference between the first and the second position solution is identified and subtracted from the alert limit to create a reduced alert limit. A second integrity risk at the reduced alert limit is calculated with the signals received from all satellites except the signal received from the satellite j. The integrity risk at the alert limit is determined using the minimum of the first and second integrity risks. 1. A method for determining an integrity risk at an alert limit of a position solution determined by processing signals received from satellites of a satellite navigation system , the method comprising:calculating a first integrity risk at the alert limit assuming that one satellite of the satellites is faulty;determining a first position solution is determined with signals received from all of the satellites;determining a second position solution with signals received from all of the satellites except for a signal received from the assumed faulty satellite;determining a difference between the first and the second position solution;creating a reduced alert limit by subtracting the determined difference from the alert limit;calculating a second integrity risk at the reduced alert limit with the signals received from all satellites except the signal received from the assumed faulty satellite; anddetermining the integrity risk at the alert limit using a lower of the first and second integrity risks.2. The method in accordance with claim 1 , wherein the integrity risk at the alert limit is ...

Подробнее
Номер записи: 31
17-10-2013 дата публикации

ADVANCED GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) POSITIONING USING PRECISE SATELLITE INFORMATION

Номер: US20130271318A1
Автор: Doucet Kenneth Donald, Landau Herbert
Принадлежит: TRIMBLE NAVIGATION LIMITED

A method is provided for estimating parameters useful to determine the position of a global navigation satellite system (GNSS) receiver or a change in the position thereof. The method includes the steps of: obtaining at least one GNSS signal received at the GNSS receiver from each of a plurality of GNSS satellites; obtaining, from at least one network node, precise satellite information on: (i) the orbit or position of at least one of the plurality of GNSS satellites, and (ii) a clock offset of at least one of the plurality of GNSS satellites; identifying, among the obtained GNSS signals, a subset of at least one GNSS signal possibly affected by a cycle slip, the identified subset being hereinafter referred to as cycle-slip affected subset; and estimating parameters useful to determine the position of the GNSS receiver or a change in the position of the GNSS receiver using at least some of the obtained GNSS signals which are not in the cycle-slip affected subset, and the precise satellite information. 1. Method for estimating parameters useful to determine the position of a global navigation satellite system (GNSS) receiver or a change in the position of the GNSS receiver , the method including the steps of:obtaining at least one GNSS signal received at the GNSS receiver from each of a plurality of GNSS satellites; (i) the orbit or position of at least one of the plurality of GNSS satellites, and', '(ii) a clock offset of at least one of the plurality of GNSS satellites;, 'obtaining, from at least one network node, information, here referred to as “precise satellite information”, onidentifying, among the obtained GNSS signals, a subset of at least one GNSS signal possibly affected by a cycle slip, the identified subset being hereinafter referred to as cycle-slip affected subset; and at least some of the obtained GNSS signals which are not in the cycle-slip affected subset, and', 'the precise satellite information., 'estimating parameters useful to determine the ...

Подробнее
Номер записи: 32
17-10-2013 дата публикации

Generation of a Data Stream Comprising User Messages in a Satellite-Based Augmentation System

Номер: US20130273955A1
Автор: Hans Trautenberg
Принадлежит: Astrium GmbH

In a satellite-based augmentation system a data stream is generated that includes user messages having different message types. A plurality of predetermined unique sequences of message types are formed and each formed sequence is allocated to one of a plurality of data sources that are used for generating user messages in the satellite-based augmentation system. A data source is selected for generating a data stream that includes user messages. The selected data source generates the data stream including user messages by using the predetermined unique sequence of message types that is allocated to the selected data source.

Подробнее
Номер записи: 33
31-10-2013 дата публикации

Method and Apparatus for Maintaining Integrity of Long-Term Orbits in a Remote Receiver

Номер: US20130285851A1
Автор: Frank van Diggelen, Matthew Riben
Принадлежит: Broadcom Corp, Global Locate Inc, Globate Locate Inc

A method and apparatus for maintaining integrity of long-term-orbit information used by a Global-Navigation-Satellite-System or other positioning receiver is described. The method comprises obtaining a predicted pseudorange from a first set of long-term-orbit information possessed by a positioning receiver; obtaining, at the positioning receiver from at least one satellite, a measured pseudorange; determining validity of the predicted pseudorange as a function of the predicted pseudorange and the measured pseudorange; and excluding from the long-term-orbit information at least a portion thereof when the validity of the predicted pseudorange is deemed invalid. Optionally, the method may comprise updating or otherwise supplementing the long-term-orbit information with other orbit information if the validity of the predicted pseudorange is deemed invalid.

Подробнее
Номер записи: 34
21-11-2013 дата публикации

Automatic Detection of Mode of Transportation by Analyzing Signal Strength of Received GNSS Signals and Speed

Номер: US20130307722A1
Автор: Shahram Rezaei
Принадлежит: Individual

Object of the present invention is to provide a method to reduce power consumption of location based services applications, that run on mobile devices, by utilizing processor and positioning resources only when location changes. A method also is provided for detecting or inferring mode of transportation of user of a GNSS-enabled mobile device, such as smart phone, tablet, etc. Modes of transportation consist of: traveling on foot, biking, motor biking, driving or riding on a car, riding on bus, and riding on train. This method is based on analyzing signal strength information of GNSS signals received at location of the user and speed. The latter is used to make distinction between travelling on foot, biking, and motor biking modes. GNSS signal cannot penetrate metal, therefore when the mobile device is inside a vehicle, such as car, bus, or train, GNSS signals that their path collides with roof or metal body of the vehicle would be weak and have low SNR.

Подробнее
Номер записи: 35
12-12-2013 дата публикации

SINGLE RECEIVER GPS POINTING VECTOR SENSING

Номер: US20130328718A1
Автор: Frey, JR. Robert D.
Принадлежит: BAE Systems Information and Electronic Systems Integration Inc.

A system and method of determining a pointing vector using two GPS antennas and a single GPS receiver is disclosed. Two stationary GPS antennas, with a separation preferably less than half of a wavelength (˜100 mm) may use a single receiver to determine the pointing vector of the system. Incorporation of a three axis angular rate measurement allows pointing determination during system rotation. Incorporation of three axis gyroscope system allows pointing determination while in motion. The system provides the ability to sense multipath and jamming. Also the system can potentially eliminate the impact and certainly alert the user that the measurement may not be reliable. 1. A system for determining the pointing direction of a system relative to an earth reference comprising:at least two stationary GPS antennas configured to receive a satellite transmission, wherein said antennas are separated from each other by a distance less than half a wavelength; anda single receiver configured to determine a pointing vector of said system.2. The system of claim 1 , wherein outputs of said antennas are scaled with time varying gains and summed in order to generate a carrier phase modulation that is dependent on orientation of said satellite.3. The system of claim 1 , further comprising a three axis gyroscope system configured to allow pointing determination while in motion.4. The system of claim 1 , wherein said position vector is updated based on difference between a predicted carrier phase and a measured carrier phase.5. The system of claim 1 , wherein said position vector accuracy is measured based on comparison of said predicted carrier phase and said measured carrier phase.6. The system of claim 1 , wherein jamming and muitipath is detected and mitigated based on comparison of said predicted carrier phase and said measured carrier phase with elimination of compromised satellite measurements from the solution.7. A method for determining the pointing direction of a system ...

Подробнее
Номер записи: 36
12-12-2013 дата публикации

REFINING A POSITION ESTIMATE OF A LOW EARTH ORBITING SATELLITE

Номер: US20130332072A1
Автор: Janky James M., Riter Bruce D., Talbot Nicholas C., Vollath Ulrich
Принадлежит:

In a method for refining a position estimate of a low earth orbiting (LEO) satellite a first position estimate of a LEO satellite is generated with a GNSS receiver on-board the LEO satellite. Corrections are received at the LEO satellite. The corrections are processed on-board the LEO satellite such that a corrected LEO satellite position estimate of the LEO satellite is generated for the first position estimate. 1. A method for refining a position estimate of a low earth orbiting (LEO) satellite , said method comprising:generating a first position estimate of a LEO satellite with a GNSS receiver on-board said LEO satellite;receiving corrections at said LEO satellite; andprocessing said corrections on-board said LEO satellite such that a corrected LEO satellite position estimate of said LEO satellite is generated for said first position estimate.2. The method as recited in claim 1 , further comprising communicating said first position estimate to a Virtual Reference Station (VRS) processor by:transmitting said first position estimate using a telemetry downlink to communicate said first position estimate from said LEO satellite, wherein said downlink is further coupled to a communications network configured for delivering said first position estimate to a VRS processor.3. The method as recited in claim 2 , wherein said communicating said first position estimate to a VRS processor comprises:formatting said first position estimate into a GNSS information message along with an identifier associated with said LEO satellite; andcommunicating said GNSS information message to said VRS processor.4. The method as recited in claim 1 , further comprising:utilizing said corrected LEO position estimate as an input to an orbit control system of said LEO satellite.5. The method as recited in claim 1 , further comprising:transmitting said corrected LEO satellite position estimate from said LEO satellite for receipt by a GNSS rover receiver.6. The method as recited in claim 5 , ...

Подробнее
Номер записи: 37
19-12-2013 дата публикации

Method and device for determining the position of a vehicle

Номер: US20130335263A1
Автор: Reiner Schmid
Принадлежит: SIEMENS AG

A method determines a position of a vehicle. The method includes providing first raw position data from a satellite navigation system pertaining to the vehicle. At least one further vehicle is identified and a communication link is set up to the at least one further vehicle. Second raw position data of the satellite navigation system of the at least one further vehicle is received by way of the established communication link. The position of the vehicle is calculated by differential positioning based on the received second raw position data of the at least one further vehicle and on the first raw position data of the vehicle.

Подробнее
Номер записи: 38
19-12-2013 дата публикации

DETECTING METHOD OF GPS CLOCK SIGNAL JUMP USING CARRIER PHASE MEASUREMENTS IN REAL-TIME

Номер: US20130335267A1
Автор: CHO Jeongho, HEO Moon-Beom, HEO Youn Jeong
Принадлежит: KOREA AEROSPACE RESEARCH INSTITUTE

Provided is a method of detecting GPS clock signal jump, comprising a data obtaining step of obtaining GPS carrier phase measurements from a GPS receiver and satellite orbits from IGS to detect the GPS clock signal jump; a GPS clock bias calculating step of eliminating errors included in the data obtained from the data obtaining step and calculating GPS clock bias; a Teager energy calculating step of applying a Teager energy operator to the GPS clock bias calculated with respect to each satellite in the GPS clock bias calculating step and calculating Teager energy to determine whether the GPS clock jump is occurred; and a GPS clock jump detecting step of checking whether a Teager energy is larger than a threshold value. Therefore, the present invention can effectively detect the GPS clock signal jump in real-time. 1. A method of detecting GPS clock signal jump , comprising:{'b': '100', 'a data obtaining step S of obtaining GPS carrier phase measurements from a GPS receiver and precise satellite orbits from IGS to detect the GPS clock signal jump;'}{'b': 200', '100, 'sup': 'i', 'a GPS clock bias calculating step S of eliminating errors included in the data obtained from the data obtaining step S and calculating GPS clock bias B;'}{'b': 300', '200, 'sup': 'i', 'a Teager energy calculating step S of applying a Teager energy operator to the GPS clock bias Bcalculated with respect to each satellite in the GPS clock bias calculating step S and calculating Teager energy in order to determine whether the GPS clock jump is occurred; and'}{'b': 400', '300, 'a GPS clock jump detecting step S of checking whether a Teager energy obtained in the Teager energy calculating step S is larger than a threshold value, and it is determined that the GPS clock jump is occurred if the Teager energy is larger than the threshold value.'}4200. The method claims 1 , wherein the data used in the GPS clock bias calculating step S are data received from a receiver synchronized with an atomic clock ...

Подробнее
Номер записи: 39
26-12-2013 дата публикации

Selection of a Subset of Global Navigation Satellite System Measurements Based on Prediction of Accuracy of Target Parameters

Номер: US20130342396A1
Автор: "OConnor Raymond M.", Averin Sergey, Di Federico Ivan Giovanni, Milyutin Daniel
Принадлежит:

An optimum measurement subset with a specified number n of elements is generated from a set of N>n weighted input global navigation satellite system (GNSS) measurements. A group of trial measurement subsets is generated by removing a different individual weighted input GNSS measurement from the set. A value of accuracy criterion for a target parameter is calculated for each trial measurement subset, and the trial measurement subset with the minimum value of accuracy criterion is selected. A new group of trial measurement subsets is generated by removing a different individual weighted GNSS measurement from the previously selected trial measurement subset. A value of accuracy criterion is calculated for each new trial measurement subset, and a new trial measurement subset with the new minimum value of accuracy criterion is selected. The process is repeated until the selected trial measurement subset has the specified number n of elements. 1. A method for generating an optimum measurement subset from a set of weighted input global navigation satellite system (GNSS) measurements , wherein the number of weighted input GNSS measurements in the set of weighted input GNSS measurements is a first integer , wherein the number of weighted input GNSS measurements in the optimum measurement subset is a specified second integer , and wherein the specified second integer is less than the first integer , the method comprising: receiving the set of weighted input GNSS measurements;', 'generating a group of trial measurement subsets by removing a different individual weighted input GNSS measurement from the set of weighted input GNSS measurements;', 'for each trial measurement subset in the group of trial measurement subsets, calculating a value of accuracy criterion for at least one target parameter;', 'determining a minimum value of accuracy criterion based on the values of accuracy criterion calculated for each trial measurement subset in the group of trial measurement subsets; ...

Подробнее
Номер записи: 40
26-12-2013 дата публикации

Access point location identification methods and apparatus based on absolute and relative harvesting

Номер: US20130344886A1
Автор: Ben Tarlow, Murray Robert Jarvis, Nicolas Guy Albert Graube
Принадлежит: Cambridge Silicon Radio Ltd

A system and method which identifies locations associated with radio-frequency (RF) signal sources in an area, includes receiving multiple measurement sets from a plurality of collector devices. The collector devices obtain contemporaneous information on characteristics of the signal sources and absolute and/or relative location information of the collectors. These measurement sets are processed to discover positioning data for the RF signal sources that may be used to determine locations of devices in the area that are configured to receive or monitor the RF signals.

Подробнее
Номер записи: 41
06-02-2014 дата публикации

Devices, Methods, and Apparatuses for Mobile Device Acquisition Assistance

Номер: US20140035782A1
Автор: Edge Stephen William, Fischer Sven
Принадлежит: QUALCOMM INCORPORATED

Methods, apparatuses and/or articles of manufacture, which may be employed in a mobile device and/or in a location server, enable acquisition assistance at the mobile device. In at least one implementation, which is not intended to limit claimed subject matter, acquisition assistance may include expected Doppler frequency shift and expected code phase in the case of a particular Global Navigation Satellite System (GNSS) satellite vehicle, as well as a search window for each of these, and a confidence value. The confidence value may indicate the likelihood of detecting signals from the satellite vehicle at the current expected location of the mobile device and within the given search windows and may enable one or more of faster location estimation, reduced battery consumption, and detection of weaker satellite signals. 1. A method at a location server for providing acquisition assistance parameters for use in acquisition of one or more positioning system signals , comprising:determining an initial estimated location of a mobile device and an uncertainty area of said initial estimated location;determining a confidence value for said initial estimated location for use in computing said acquisition assistance parameters;determining said acquisition assistance parameters including one or more search windows; andtransmitting said acquisition assistance parameters and said confidence value to said mobile device.2. The method of claim 1 , wherein said confidence value is indicative of a likelihood that said mobile device is capable of obtaining measurements of one or more characteristics of one or more satellite positioning system (SPS) signals within said one or more search windows.3. The method of claim 1 , wherein said confidence value is indicative of a likelihood that said mobile device is capable of obtaining measurements of one or more characteristics of one or more positioning signals from at least one terrestrial base station.4. The method of claim 1 , wherein said ...

Подробнее
Номер записи: 42
13-02-2014 дата публикации

SYSTEM, METHOD AND APPARATUS FOR RADIO FREQUENCY BASED LOCATION AND TRACKING

Номер: US20140043186A1
Автор: KARAYIL THEKKOOTT Narayanan Manoj, Manoj Anila
Принадлежит: Loka Wireless Sdn. Bhd.

A method for wirelessly transmitting geographic coordinate information and a system and apparatus implementing the method. The method may include obtaining a latitude coordinate and a longitude coordinate, correlating a first radio frequency to the latitude coordinate, correlating a second radio frequency to the longitude coordinate, transmitting a signal at the first radio frequency, and transmitting a signal at the second radio frequency. 1. A computer program product , in a computer readable medium , for obtaining a frequency value from a decimal geographic coordinate , comprising:instructions for receiving geographic coordinate information; andinstructions for adding an integer to the geographic coordinate information so as to obtain a radio frequency value;wherein the value of the integer is determined based on one or more of the type of geographic coordinate and the hemispherical location of the geographic coordinate.2. The method of claim 1 , wherein the type of geographic coordinate is selected from the group consisting of latitude claim 1 , longitude claim 1 , and elevation.3. The method of claim 1 , wherein the hemispherical location of the geographic coordinate is selected from the group consisting of north of the equator claim 1 , south of the equator claim 1 , east of the prime meridian claim 1 , and west of the prime meridian.4. A method for wirelessly transmitting geographic coordinate information claim 1 , comprising:obtaining a latitude coordinate and a longitude coordinate;correlating a first radio frequency to the latitude coordinate;correlating a second radio frequency to the longitude coordinate;transmitting a signal at the first radio frequency; andtransmitting a signal at the second radio frequency.5. The method of claim 4 , further comprising:obtaining elevation information;correlating a third radio frequency to the elevation information; andtransmitting a signal at the third radio frequency.6. The method of claim 4 , wherein correlating a ...

Подробнее
Номер записи: 43
13-02-2014 дата публикации

GLOBAL POSITIONING SYSTEM RADIOMETRIC EVALUATION

Номер: US20140043188A1
Автор: DESAI Shailen D., HAINES Bruce J.
Принадлежит: California Institute of Technology

Methods and devices for the analysis of global positioning system (GPS) data are described. The methods and devices comprise several metrics to analyse GPS data, such as tracking coverage, signal to noise ratio, multipath noise, positioning and receiver clock, troposphere and data noise. 1. A method for analyzing Global Positioning System (GPS) measurements , the method comprising:providing GPS receiver data from a GPS receiver;evaluating, by a computer, a measurement quality of the GPS receiver data, thereby obtaining measurement quality metrics;obtaining GPS metrics from the GPS receiver data;evaluating, by a computer, a positioning quality of the GPS receiver data, by analyzing the GPS metrics with a computer, thereby obtaining positioning quality metrics; anddisplaying to a user the measurement quality metrics and/or positioning quality metrics.2. The method of claim 1 , wherein the evaluating claim 1 , by a computer claim 1 , the measurement quality comprises steps taken from the group of: counting a number of satellites tracked by a GPS receiver claim 1 , measuring a length of continuous tracking of the satellites claim 1 , measuring gaps in the tracking of the satellites claim 1 , measuring absolute and/or relative temporal variations in signal to noise ratio of the GPS receiver data claim 1 , determining multipath noise in the GPS receiver data claim 1 , determining systematic errors claim 1 , biases and/or drifts in the GPS receiver data.3. The method of claim 1 , wherein the evaluating claim 1 , by a computer claim 1 , the positioning quality comprises steps taken from the group of: measuring temporal variations in a position of a GPS receiver claim 1 , measuring variations in a clock of the GPS receiver claim 1 , measuring variations in troposphere relevant for reception of the GPS receiver data claim 1 , measuring post-fit residuals claim 1 , determining a distribution of measurements by an elevation of line-of-sight from a local horizon to GPS ...

Подробнее
Номер записи: 44
20-02-2014 дата публикации

SYSTEMS AND METHODS FOR USING A SATELLITE POSITIONING SYSTEM TO DETECT MOVED WLAN ACCESS POINTS

Номер: US20140049424A1
Автор: Alizadeh-Shabdiz Farshid
Принадлежит: Skyhook Wireless, Inc.

In one embodiment, an area in which a mobile device may be located is determined using a satellite-based positioning system (SPS). An area in which the mobile device may be located is determined using a wireless local area network based positioning system(WLAN-PS). The area determined using the SPS is compared to the area determined using the WLAN-PS. In response to the area determined using the SPS being remote from the area determined using the WLAN-PS, it is concluded that the one or more WLAN APs have been moved to be about the area determined using the SPS. One or more locations of the one or more WLAN APs are updated in the reference database. 1. A method comprising:determining an area in which a mobile device may be located using a satellite-based positioning system (SPS), the area determined using the SPS including a set of multiple location estimates determined from satellite measurements from at least two satellites received by the mobile device;determining an area in which the mobile device may be located using a wireless local area network based positioning system (WLAN-PS), the area determined using the WLAN-PS determined from one or more locations in a reference database associated with one or more wireless local area network (WLAN) access points (APs) detected by the mobile device;comparing the area determined using the SPS to the area determined using the WLAN-PS;in response to the area determined using the SPS being remote from the area determined using the WLAN-PS, concluding that the one or more WLAN APs have been moved to be about the area determined using the SPS; andupdating the one or more locations of the one or more WLAN APs in the reference database.2. The method of claim 1 , wherein the satellite measurements are satellite measurements from at least two satellites but less than four satellites.3. The method of claim 2 , wherein the satellite measurements are insufficient to select a single location estimate for the mobile device.4. The ...

Подробнее
Номер записи: 45
06-03-2014 дата публикации

Satellite Signal Receiver and Method for Updating Ephemeris Information Thereby

Номер: US20140062770A1
Автор: Gao Ke, Liu Mao
Принадлежит: O2MICRO INC.

A satellite signal receiver and a method for updating ephemeris information thereby are disclosed. The receiver includes an instruction module, a signal processing module, and an update module. The instruction module is configured to send an instruction for updating ephemeris information at a set time interval. The signal processing module is configured to obtain corresponding satellite data. The update module is configured to update the ephemeris information according to the obtained satellite data in response to the instruction for updating ephemeris information. 1. A satellite signal receiver , comprising:an instruction module configured to send an instruction for updating ephemeris information at a set time interval;a signal processing module configured to obtain corresponding satellite data; andan update module configured to update the ephemeris information according to the obtained satellite data in response to the instruction for updating ephemeris information.2. The receiver of claim 1 , wherein the signal processing module comprises:a capturing unit configured to capture satellite signals in response to the instruction for updating ephemeris information;a tracking unit configured to track the satellite signals captured by the capturing unit in response to the instruction for updating ephemeris information; anda demodulation unit configured to demodulate the satellite signals tracked by the tracking unit in response to the instruction for updating ephemeris information, and obtain corresponding satellite data.3. The receiver of claim 2 , further comprising:a signal intensity determination module configured to determine if the intensity value of the satellite signals is less than a predetermined threshold value,wherein the update module does not respond to the instruction for updating ephemeris information if the intensity value of the satellite signals is less than the predetermined threshold value.4. The receiver of claim 3 , further comprising:a counting ...

Подробнее
Номер записи: 46
06-03-2014 дата публикации

Ambiguity Windowing in Communications Among Global Navigation System Satellite Receivers

Номер: US20140062776A1
Автор: Albright Michael, Ferguson Kendall, Remondi Benjamin W.
Принадлежит: TRIMBLE NAVIGATION LIMITED

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 ...

Подробнее
Номер записи: 47
06-03-2014 дата публикации

Fast gps recovery using map vector data

Номер: US20140062777A1
Автор: Glenn D. MacGougan, Robert W. Mayor, Stephen J. Rhee
Принадлежит: Apple Inc

Methods and apparatuses to assist a global positioning system (GPS) module to determine GPS position estimates for a wireless communication device is disclosed. Processing circuitry in the wireless communication device determines a potential or an actual inaccuracy in a GPS position estimate obtained from a GPS module. The processing circuitry obtains a set of map vector data stored in or associated with the wireless communication device. The processing circuitry determines a location estimate of the wireless communication device based on at least a portion of the set of map vector data. The processing circuitry provides the location estimate to the GPS module and obtains an updated GPS position estimate from the GPS module, the updated GPS position estimate based at least in part on the location estimate provided to the GPS module.

Подробнее
Номер записи: 48
06-03-2014 дата публикации

CYCLE SLIP DETECTION

Номер: US20140062778A1
Автор: ASHJAEE Javad, YUDANOV Sergey
Принадлежит: JAVAD GNSS, Inc.

Systems and methods for detecting and displaying cycle slips are provided. In one example method, a first L1 signal and a second L2 signal may be received. The coarse/acquisition code from the L1 signal may be extracted and may be monitored to detect a phase shift in the code. In response to detecting a phase shift in the code, a data bit of the L1 signal may be monitored for a predetermined length of time to detect a change in the data bit. A cycle slip may be detected in response to detecting a change in the data bit during the predetermined length of time. In another example, a cycle slip may be detected in response to detecting a change between a phase of the L1 signal and a phase of the L2 signal. 1. A computer-implemented method for detecting cycle slips in a global navigation satellite system (GNSS) device , the method comprising:receiving, by a GNSS receiver, a first signal from a GNSS satellite;extracting a coarse/acquisition (C/A) code from the first signal;detecting a phase shift in the C/A code; anddetecting a cycle slip in response to detecting a change in a data bit of the first signal within a predetermined length of time after detecting the phase shift in the C/A code.2. The method of claim 1 , wherein the first signal comprises an L1 signal.3. The method of claim 1 , further comprising:receiving, by the GNSS receiver, a second signal from the GNSS satellite; anddetecting the cycle slip in response to a change between a phase of the first signal and a phase of the second signal.4. The method of claim 3 , wherein the second signal comprises an L2 signal.5. The method of claim 3 , wherein detecting the cycle slip in response to the change between the phase of the first signal and the phase of the second signal comprises:compensating the phase of the first signal for multipath and ionosphere effects;compensating the phase of the second signal for multipath and ionosphere effects; anddetecting the cycle slip in response to a change between the ...

Подробнее
Номер записи: 49
13-03-2014 дата публикации

Method, Apparatus, and System for Determining a Position of an Object Having a Global Navigation Satellite System Receiver by Processing Undifferenced Data Like Carrier-Phase Measurements and External Products Like Ionosphere Data

Номер: US20140070992A1
Автор: Hernandez-Pajares Manuel, Juan Zornoza José Miguel, Samson Jaron, Sanz Subirana Jaume, Tossaint Michel Mathias Maria
Принадлежит: EUROPEAN SPACE AGENCY

A method for determining a position of an object having a Global Navigation Satellite System (GNSS) receiver comprises receiving signals that are transmitted by GNSS transmitters positioned on board satellites positioned in view of the object; updating service data in the object, the service data including satellite clock data, satellite orbit data, satellite delay code bias data relating to delay code biases of the GNSS transmitters, and ionospheric model data indicating a state of an ionosphere; determining, based on the ionospheric model data, ionospheric delay data indicating corrections relating to delays of the signals, the delays of the signals resulting from passage of the signals through the ionosphere, and reception of the signals by the GNSS receiver; and determining a position of the object based on the signals, the satellite clock data, the satellite orbit data, the satellite delay code bias data, and the determined ionospheric delay data. 1. A method for determining a position of an object having a Global Navigation Satellite System (GNSS) receiver , the method comprising the steps of:{'sub': E1', 'En', '1', 'n, 'receiving signals by the GNSS receiver that are transmitted by GNSS transmitters (GNSSto GNSS) positioned on board satellites (SATto SAT) that are positioned in view of the object;'} [{'sub': 1', 'n, 'satellite clock data indicating internal clocks of the satellites (SATto SAT);'}, {'sub': 1', 'n, 'satellite orbit data indicating positions of the satellites (SATto SAT);'}, {'sub': E1', 'En, 'satellite delay code bias data relating to delay code biases of the GNSS transmitters (GNSSto GNSS); and'}, 'ionospheric model data indicating a state of an ionosphere;, 'updating service data in the object, the service data being provided by a GNSS service provider and including{'sub': E1', 'En', 'GNSS, 'determining, based on the ionospheric model data, ionospheric delay data indicating corrections relating to delays of the signals, the delays of the ...

Подробнее
Номер записи: 50
20-03-2014 дата публикации

Ensuring Positioning Quality-of-Service for LTE Positioning

Номер: US20140080506A1
Автор: Siomina Iana
Принадлежит: Telefonaktiebolaget lM Ericsson (publ)

Methods in a radio network node for obtaining positioning QoS information and using the positioning QoS information, as well as corresponding radio network node apparatus, are disclosed. An example method begins with the receiving () of positioning QoS information for a target wireless device, such as a user equipment, UE. In some cases, for example, the positioning QoS information is received from a positioning node, using the LPPa protocol. The positioning QoS information may include, for example, a desired horizontal accuracy, a desired vertical accuracy, and a target response time. The received positioning QoS information is used () to configure uplink transmissions to be transmitted by the target wireless device, or to configure a receiver for reception of one or more uplink transmissions from the target wireless device, or both. 133-. (canceled)34. A method , in a radio network node , for assisting positioning of a target wireless device , the method comprising:receiving, at the radio network node, positioning quality-of-service (QoS) information for the target UE; andconfiguring one or more uplink transmissions for the target wireless device or configuring a receiver for reception of one or more uplink transmissions that are transmitted by the target wireless device, or both.35. The method of claim 34 , wherein the positioning QoS information is received from any of the following: a positioning node claim 34 , a core network node claim 34 , a second radio network node claim 34 , the target wireless device claim 34 , and a user equipment other than the target wireless device.36. The method of claim 35 , wherein the positioning QoS information is received from a positioning node claim 35 , using the LTE Positioning Protocol Annex (LPPa).37. The method of claim 35 , wherein the positioning QoS information is received from a positioning node claim 35 , using the SLmAP protocol.38. The method of claim 37 , wherein the positioning QoS information is included in an ...

Подробнее
Номер записи: 51
27-03-2014 дата публикации

Synchronization indication in networks

Номер: US20140085140A1
Автор: Ismo Halivaara, Jari Syrjärinne, Lauri Wirola
Принадлежит: Nokia Oyj

Systems and methods provide a network's synchronization status to a terminal when the terminal receives a transmission from the network. This network synchronization status can be indicated in accordance with various methods including, but not limited to the following: with a status flag in a network message; in a network capability indication; in a network's positioning capability indication; cell/network time relation information; in a time relation information of different Radio Access Technologies; and implicitly with another parameter and/or by a request for a certain measurement. When the network's synchronization status is determined, accurate time information/time assistance data can be maintained at the terminal.

Подробнее
Номер записи: 52
10-04-2014 дата публикации

SATELLITE WITH DEPLOYABLE PAYLOAD MODULES

Номер: US20140097981A1
Автор: CELERIER Bruno
Принадлежит:

A telecommunication satellite with geostationary orbit comprises an upper module, a lower module, and a lateral module, disposed in a storage configuration between the upper module and the lower module, and deployed to an operational configuration of the satellite in the orbit by a rotation in relation to an axis Z oriented towards the earth in the operational configuration. The lateral module comprises two substantially plane and mutually parallel main surfaces, termed dissipative surfaces, able to dissipate by radiation a quantity of heat generated by facilities of the satellite; the dissipative surfaces being, in the operational configuration, held in a manner substantially parallel to the plane of the orbit, making it possible to limit the solar flux received by the dissipative surfaces and to optimize the quantity of heat dissipated by the lateral module. 1. A telecommunication satellite with geostationary orbit comprising:an upper module and a lower module,a lateral module, disposed in a storage configuration between the upper module and the lower module, and deployed to an operational configuration of the satellite in the orbit by a rotation in relation to an axis Z oriented towards the earth in the operational configuration,the lateral module comprising at least one mission or service facility, two substantially plane and mutually parallel main surfaces, being dissipative surfaces, able to dissipate by radiation a quantity of heat generated by facilities of the satellite; the dissipative surfaces being, in the operational configuration, held in a manner substantially parallel to the plane of the orbit, making it possible to limit the solar flux received by the dissipative surfaces and to optimize the quantity of heat dissipated by the lateral module.2. The satellite according to claim 1 , wherein the lateral module comprises two articulations claim 1 , linked respectively to the upper module and to the lower module claim 1 , configured so as to allow the ...

Подробнее
Номер записи: 53
10-04-2014 дата публикации

SYSTEM AND METHOD FOR MONITORING INTEGRITY OF A GLOBAL NAVIGATION SATELLITE SYSTEM

Номер: US20140097984A1
Автор: STEVENS Tim
Принадлежит: LOCKHEED MARTIN CORPORATION

A system and method for monitoring integrity of a Global Navigation Satellite System (GNSS) are provided. Integrity of a GNSS location is assessed based on a comparison of the GNSS location with one or more locations received from at least one other GNSS. Integrity of the GNSS location is also assessed based on a comparison of the GNSS location with one or more locations obtained from signals generated by one or more known located emitters. Integrity of the GNSS location is also assessed based on a comparison of the GNSS location with historical data, which may include contextual information of recent GNSS locations of a user equipment, measurements made by an inertial navigation system of the user equipment, and prior measurements made by the user equipment during similar paths. An integrity warning is outputted when one or more of the integrity assessments indicate a loss of integrity of GNSS. 1. A method for monitoring integrity of a Global Navigation Satellite System (GNSS) , the method comprising:assessing integrity of a GNSS location based on a comparison of the GNSS location with one or more locations received from at least one other GNSS;assessing integrity of the GNSS location based on a comparison of the GNSS location with one or more locations obtained from signals generated by one or more known local fixed emitters;assessing integrity of the GNSS location based on a comparison of the GNSS location with historical data, wherein the historical data comprise at least one of contextual information of recent GNSS locations of a user equipment, measurements made by an inertial navigation system of the user equipment, and prior measurements made by the user equipment during similar paths; andoutputting an integrity warning when one or more of the integrity assessments indicate a loss of integrity of the GNSS.2. The method of claim 1 , wherein the GNSS is a Global Positioning System (GPS).3. The method of claim 1 , wherein the GNSS is a Galileo System.4. The ...

Подробнее
Номер записи: 54
10-04-2014 дата публикации

PSEUDO-SATELLITE TRANSMITTER AND METHOD OF TRANSMITTING GPS SIGNALS USING PSEUDO-SATELLITE TRANSMITTER

Номер: US20140097985A1
Автор: KIM WAN-JIN
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A pseudo-satellite transmitter includes a GPS unit, a transmission power control unit, and a plurality of antennas. The GPS unit generates a GPS signal of a pseudo-satellite. The transmission power control unit generates a plurality of GPS signals having different power levels based on the GPS signal generated by the GPS unit and a distance from a shadow area to the pseudo-satellite transmitter. Each antenna is configured to wirelessly transmit the GPS signals with different power levels output from the transmission power control unit to a corresponding one of a plurality of shadow areas according to the distance from the shadow area to the corresponding antenna. 1. A method of transmitting GPS signals of a pseudo-satellite , comprising:enabling a GPS unit of a pseudo-satellite transmitter to generate a GPS signal;enabling a transmission power control unit to generate a plurality of GPS signals with different power levels based on the GPS signal and power determination values of a plurality of reception areas; andtransmitting the GPS signals with different power levels to the plurality of reception areas through a plurality of different antennas.2. The method of claim 1 , wherein plurality of antennas are co-located in a lateral direction over a common transmission position and the reception areas are annular and arranged concentrically around the common transmission position.3. The method of claim 2 , wherein the antennas are co-located in a lateral direction over the transmission position.4. The method of claim 2 , wherein the transmitting comprises transmitting a GPS signal of the plurality of GPS signals having the lowest power level to the reception area of lowest area claim 2 , and transmitting each subsequent GPS signal of a next higher power level to the next reception area of the next higher area.5. The method of claim 4 , wherein the transmitting comprises transmitting all of the GPS signals by each directional antenna to a respective one of the reception ...

Подробнее
Номер записи: 55
05-01-2017 дата публикации

GEOSPATIAL POSITIONING USING CORRECTION INFORMATION PROVIDED OVER CELLULAR CONTROL CHANNELS

Номер: US20170003398A1
Автор: Appleford Kirk, Mundt Clinton Howard
Принадлежит:

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 , ...

Подробнее
Номер записи: 56
07-01-2016 дата публикации

Method and System for Estimating Error in Predicted Distance Using RSSI Signature

Номер: US20160003932A1
Автор: "Parker Johne Michelle", Fessler John Thomas, Jacobs Nathan Bradley, Kratzer Zachary Charles Nathan, Whitney Ann Michelle, Whitney Julie Ann Gordon
Принадлежит:

A localization method and system, including calculating a first distance estimate of a distance between a radio frequency identification (RFID) tag and a reader based on information associated with at least one of a plurality of response signals received from the RFID tag in response to interrogation signals by the reader at a plurality frequencies, measuring a signal strength of each of the received plurality of response signals to create a received signal strength indicator (RSSI) signature, predicting an error in the first distance estimate using the RSSI signature, and determining a final distance estimate of the distance by modifying the first distance estimate based on the predicted error. 1. A method for determining a distance between a radio frequency identification (RFID) tag and a reader , comprising:transmitting, by the reader, a plurality of interrogation signals to the RFID tag at a plurality of frequencies;receiving, by the reader, a plurality of response signals from the RFID tag in response to the plurality of interrogation signals;calculating a first distance estimate of the distance based on information associated with the at least one of the plurality of response signals received;measuring a signal strength of each of the received plurality of response signals to create a received signal strength indicator (RSSI) signature;predicting an error in the first distance estimate using the RSSI signature; anddetermining a final distance estimate of the distance by modifying the first distance estimate based on the predicted error.2. The method of claim 1 , wherein the first distance estimate is one of an RSSI-based distance estimate and a phase-based distance estimate.3. The method of claim 1 , further comprising providing the final distance estimate to a remote computing device for use thereby in determining a location of the RFID tag.4. The method of claim 1 , wherein predicting the error comprises invoking an error prediction function that is defined ...

Подробнее
Номер записи: 57
07-01-2016 дата публикации

ELECTRONIC TAPE MEASURE ON A CELLPHONE

Номер: US20160003948A1
Автор: Janky James M., Loomis Peter Van Wyck, Talbot Nicholas C., Wallace Gregory Craig, Weisenburger Shawn D.
Принадлежит:

A radio frequency component receives and digitizes a first plurality of L1 Global Navigation Satellite System (GNSS) signals and a second plurality of L2C GNSS signals from a plurality of GNSS satellites. A software defined GNSS receiver operating on a processor of a cellular telephone separate from the radio frequency component derives carrier phase measurements from the first plurality of L1 GNSS signals and the second plurality of L2C GNSS signals during an epoch. A wireless message from a communication device located at a base location is received conveying pseudorange and carrier measurements derived from the first plurality of L1 GNSS signals from said plurality of GNSS satellites during the epoch. The cellular telephone determines a distance from the base location to said first location. 1. A method of implementing an electronic tape measure , said method comprising:receiving at a first location a first plurality of L1 Global Navigation Satellite System (GNSS) signals from a plurality of GNSS satellites during an epoch and digitizing said first plurality of L1 GNSS signals;receiving at said first location a second plurality of L2C GNSS signals from said plurality of GNSS satellites during said epoch and digitizing said second plurality of L2C GNSS signals;using a software defined GNSS receiver operating on a processor of a cellular telephone to derive pseudorange and carrier measurements from said first plurality of L1 GNSS signals and pseudorange and carrier measurements from said second plurality of L2C GNSS signals;receiving a wireless message from a communication device located at a base location conveying pseudorange and carrier measurements derived from said first plurality of L1 GNSS signals from said plurality of GNSS satellites during said epoch; anddetermining by said cellular telephone a distance from said base location to said first location.2. The method of wherein said processor of said cellular telephone is located outside of a GNSS receiver ...

Подробнее
Номер записи: 58
07-01-2021 дата публикации

Map information comparing and auxiliary positioning system and method thereof

Номер: US20210003402A1
Автор: Chia-Jen LIN, Chun-Chi Lai, Shih-Chang Cheu
Принадлежит: Teco Electric and Machinery Co Ltd

A map information comparing and auxiliary positioning system set on a mobile platform includes an original map establishing module, a real-time map establishing module, a comparing module and a positioning module. The original map establishing module is utilized to establish an original map information marked with a plurality of original coordinates of a plurality of original feature objects. The real-time map establishing module is utilized to establish a real-time map information marked with a plurality of real-time coordinates of a plurality of real-time feature objects. The comparing module is utilized to compare the plurality of real-time coordinates with the plurality of original coordinates, and further to define the same coordinates as at least one valid reference coordinate. The positioning module is utilized to auxiliary position the mobile platform by using the at least one valid reference coordinate. In addition, a map information comparing and auxiliary positioning method is provided.

Подробнее
Номер записи: 59
03-01-2019 дата публикации

METHOD FOR MAPPING DATA RELATING TO ROAD CONDITIONS

Номер: US20190003852A1
Автор: Paturle Antoine, Petit Clément, Terrettaz Frédéric
Принадлежит:

A method for mapping data relating to the conditions on a road, the method including the following steps: (a) a step for recording, in a database, information relating to the weather conditions on a road, determined by a vehicle travelling on the road, (b) a step for recording the GPS position of the vehicle corresponding to the recordings made, and (c) a step for displaying, on a map showing the route followed by the vehicle, the weather conditions as a function of the GPS position. 1. A method for mapping data relating to a condition on a road , the method comprising the following steps:a step of recording, in a database, information, determined by a vehicle travelling on a road, relating to a weather condition on the road;a step of recording a GPS position of the vehicle corresponding to the recorded information relating to the weather condition on the road; anda step of displaying, on a map showing a route followed by the vehicle, the weather condition as a function of the GPS position.2. A method according to claim 1 , wherein the weather condition is included within the group comprising: a dry condition claim 1 , a damp condition claim 1 , a wet condition claim 1 , and a wintery condition.3. A method according to claim 1 , wherein claim 1 , during the information recording step claim 1 , information is also recorded relating to a macro-texture of a surface of the road claim 1 , andwherein the displaying step further comprises displaying a representation of the macro-texture.4. A method according to claim 3 , in which the macro-texture of the road surface is included within the group comprising a closed state claim 3 , a medium state claim 3 , and an open state.5. A method according to claim 1 , wherein claim 1 , during the information recording step claim 1 , information is also recorded relating to a sudden event affecting a state of the road claim 1 , andwherein the displaying step further comprises displaying a representation of the sudden event.6. A method ...

Подробнее
Номер записи: 60
03-01-2019 дата публикации

CROWDSOURCING ATMOSPHERIC CORRECTION DATA

Номер: US20190004180A1
Автор: Jokinen Altti
Принадлежит:

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 ...

Подробнее
Номер записи: 61
04-01-2018 дата публикации

DYNAMIC EFFECTIVE RADIATED POWER (ERP) ADJUSTMENT

Номер: US20180006371A1
Автор: Bruggemann Jeff, Cordone Sean Scott, Dang Tuan M.
Принадлежит:

Antennas used aboard aircraft to communicate with satellites or ground stations may have complex antenna patterns, which may vary as the aircraft moves throughout a given coverage area. Techniques are disclosed for dynamically adjusting the instantaneous power fed to an antenna system to ensure that the antenna transmits at the regulatory or coordinated effective isotropic radiated power (EIRP) spectral limit. The antenna may transmit, in accordance with aircraft location and attitude, steerable beam patterns at different scan and skew angle combinations, causing variations in antenna gain and fluctuations in the transmitted EIRP. Using on-board navigational data, an antenna gain and ESD limit may be calculated for a particular scan and skew angle, which may be used to adjust power fed to the antenna such that the antenna transmits substantially at maximum allowable EIRP as the steerable beam pattern is adjusted. 1. An earth station aboard aircraft (ESAA) , comprising:a variable beamwidth antenna configured to transmit in accordance with a steerable beam pattern, the gain of the variable beamwidth antenna changing for different scan and skew angle combinations of the steerable beam pattern due to changes in the ESAA's location and attitude and antenna characteristics of the variable beamwidth antenna;a processing unit configured to utilize on-board navigational data to calculate a target scan angle and a target skew angle for the steerable beam pattern to direct the steerable beam pattern being towards a target station; anda variable gain amplifier unit coupled to the variable beamwidth antenna and to the processing unit, the variable gain amplifier configured to amplify input signals to the variable beamwidth antenna in accordance with a variable gain to provide a variable amplifier instantaneous power output,wherein the processing unit is further configured to (i) access an antenna gain lookup table (LUT) and an effective isotropic radiated power (EIRP) spectral ...

Подробнее
Номер записи: 62
05-01-2017 дата публикации

POSITIONING METHOD AND APPARATUS

Номер: US20170006575A1
Автор: CUI Jie, Li Anjian
Принадлежит:

Embodiments of the present disclosure provide a positioning method and apparatus. The positioning method includes: sending, by a serving base station, a terminal side measurement request based on a positioning node reference signal to a target terminal according to configuration information of the positioning node reference signal; performing, by the serving base station, a base station side measurement based on the positioning node reference signal, and obtaining base station side measurement information based on the positioning node reference signal; and then sending terminal side measurement information based on the positioning node reference signal and the base station side measurement information based on the positioning node reference signal to a location server, so that the location server calculates location information of the target terminal. 1. A base station , comprising:a transmitter, configured to send, after a location measurement request sent by a location server is received, a terminal side measurement request based on a positioning node reference signal to a target terminal according to configuration information of the positioning node reference signal, wherein the target terminal is in a scenario in which a plurality of positioning nodes shares a same cell identity, wherein the configuration information of the positioning node reference signal comprises a transmission timing of the positioning node reference signal, a transmission period of the positioning node reference signal, a frequency-domain transmission position of the positioning node reference signal, and antenna port information, and wherein the configuration information of the positioning node reference signal further comprises a positioning node identity or a positioning node reference signal identity;a receiver, configured to receive, from the target terminal, terminal side measurement information based on the positioning node reference signal; anda processor, configured to perform a ...

Подробнее
Номер записи: 63
04-01-2018 дата публикации

Solar Focusing Device And Method Of Using the Device

Номер: US20180006600A1
Автор: Douglas David, Douglas Robert
Принадлежит:

A computer-implemented method and solar focusing apparatus is presented. A spacecraft system is placed in orbit around a sun, the spacecraft system including a lens element focusing divergent energy received from said sun into generally parallel energy. A ground receive element on earth receives the generally parallel energy from the spacecraft system. A control element is provided and is in communication with the spacecraft system and the ground receive element. 1. An apparatus comprising:a spacecraft system in orbit around a sun, said spacecraft system including a lens element focusing divergent energy received from said sun into generally parallel energy;a ground receive element receiving said generally parallel energy from said spacecraft system; anda control element in communication with said spacecraft system and said ground receive element.2. The apparatus of further comprising at least one relay station in communication with the group consisting of:at least one of said spacecraft system and another relay system; andanother relay system and said ground receive element.3. The apparatus of wherein said spacecraft system comprises:a lens sub-element;at least one solar sail in mechanical communication with said lens sub-element;a control sub-element in communication with said solar sail;a communication sub-element in communication with said control sub-element; anda system power sub-element in communication with said communication sub-element4. The apparatus of wherein said ground receive element is located on earth and wherein said spacecraft system is in an orbit synchronous with an orbit of earth.5. The apparatus of wherein said ground receive element comprises:an energy receive sub-element;a storage sub-element in communication with said energy receive sub-element;a generator sub-element in communication with said storage sub-element;a communication sub-element in communication with said energy receive sub-element; anda power sub-element in communication with ...

Подробнее
Номер записи: 64
04-01-2018 дата публикации

POSITION-BASED ACCESS TO SATELLITE NETWORKS FOR SATELLITE TERMINALS

Номер: US20180006710A1
Автор: Buer Kenneth V., Burdick Clifford K., Irvine David H., Lampe Philip A., MARTIN TIMOTHY J., SLEIGHT Brian T.
Принадлежит:

The described features generally relate to receiving one or more positioning signals at a satellite terminal during installation of the satellite terminal at a customer premises, and providing position-based access to a satellite communications system based on a satellite terminal installation position determined from the received positioning signals. The determined installation position of the satellite terminal may then be employed for various network access techniques, such as providing access to the satellite communications system, providing position-based content, or restricting content via the satellite communications system based on the determined installation position. In some examples the determined installation position of the satellite terminal may be used to approximate a propagation delay between the satellite terminal and various devices of the satellite communications system, such as a serving satellite and/or a serving gateway, to improve device synchronization and radio frequency spectrum resource utilization. 1. A method for use in a satellite communications system , comprising:receiving a plurality of positioning signals for a satellite terminal during installation of the satellite terminal at a customer premises;determining, at the satellite terminal, a first installation position of the satellite terminal based on the plurality of positioning signals;determining whether the satellite terminal has rights to access the satellite communications system at the customer premises based at least in part on the determined first installation position of the satellite terminal; andin response to determining the satellite terminal has rights to access the satellite communications system, permitting communications between the satellite terminal and a target satellite of the satellite communications system.2. The method of claim 1 , wherein the plurality of positioning signals are received from a plurality of positioning satellites.3. The method of claim 2 , ...

Подробнее
Номер записи: 65
20-01-2022 дата публикации

METHOD, PERFORMED BY GNSS RECEIVER, FOR PROCESSING DATA SIGNAL, AND RECORDING MEDIUM AND GNSS RECEIVER SYSTEM

Номер: US20220018970A1
Автор: PARK Kwan Dong, YOON Woong Jun
Принадлежит:

This application relates to a data signal processing method. In one aspect, the method includes receiving a data signal from at least one global navigation satellite system (GNSS) satellite and obtaining a pseudo-range of the at least one GNSS satellite by using the data signal. The method may also include obtaining a range-acceleration based on the pseudo-range. The method may further include applying, to the data signal, a variance obtained by assigning a weight according to a noise model to the range-acceleration. 1. A data signal processing method of a receiver system for reducing a multipath error of a data signal received from a satellite , the data signal processing method comprising:receiving a data signal from at least one satellite and obtaining a pseudo-range of the at least one satellite using the data signal;obtaining a range-acceleration based on the pseudo-range; andapplying, to the data signal, a variance obtained by assigning a weight according to a noise model to the range-acceleration.2. The data signal processing method of claim 1 , wherein the obtaining of the range-acceleration comprises obtaining claim 1 , as the range-acceleration claim 1 , a second time derivative obtained by performing a differentiation on the pseudo-range with respect to time.3. The data signal processing method of claim 1 , wherein the noise model comprises at least one of a linear model claim 1 , a polynomial model claim 1 , or an exponential model.4. The data signal processing method of claim 1 , further comprising evaluating accuracy based on the data signal to which the weight according to the noise model is applied.5. A non-transitory computer-readable recording medium storing instructions executable by a computer to perform a data signal processing method of a receiver system for reducing a multipath error of a data signal received from a satellite claim 1 , the data signal processing method comprising:receiving a data signal from at least one satellite and ...

Подробнее
Номер записи: 66
08-01-2015 дата публикации

Cross Correlation Detection In A Satellite Navigation Receiver

Номер: US20150009065A1
Автор: Vyasaraj Guru Rao
Принадлежит: Accord Software and Systems Pvt Ltd

A method and a system for detecting cross correlation in a satellite navigation receiver (SNR) in real time are provided. The SNR parallelly receives navigation signals from multiple satellites via multiple input channels. The SNR extracts ephemeris data from sub-frames of navigation data of each of the navigation signals. The SNR compares the ephemeris data of each navigation signal with the ephemeris data of another navigation signal. The SNR detects cross correlation between the navigation signals when the ephemeris data comparison results in a match and discards the navigation signal with low signal strength. The SNR also retrieves a ranging code from the sub-frames of navigation data of each navigation signal. The SNR compares the ranging code with a pre-programmed satellite identity code of a corresponding satellite. The SNR detects cross correlation when the code comparison results in a mismatch and discards the navigation signal with the mismatched ranging code.

Подробнее
Номер записи: 67
08-01-2015 дата публикации

HYBRID POSITIONING USING SYNCHRONOUS AND ASYNCHRONOUS TECHNIQUES

Номер: US20150009066A1
Автор: Werner Benjamin A.
Принадлежит:

Methods and apparatuses for a mobile station to obtain a position fix using synchronous hybrid positioning and asynchronous hybrid positioning techniques are described. In one embodiment, a wireless communication apparatus may transmit a request to a mobile station for fine time assistance (FTA) corresponding to a global navigation satellite system (GNSS). The apparatus may be configured to receive the FTA, first timing measurements from one or more base stations, and second timing measurements from the GNSS. The apparatus may identify whether the FTA was received from the mobile station. If it is determined that the FTA was received, then a system frame number (SFN) received within the FTA may be identified, wherein the SFN is associated with one of the base stations. The apparatus may then establish a position fix for the mobile station using a synchronous hybrid positioning technique that involves relating the timing measurements to a time scale associated with the SFN. If it is determined that the FTA was not received, then the apparatus may establish the position fix using an asynchronous hybrid positioning technique. 1forming one or more pseudoranges for the mobile station based on first timing measurements and second timing measurements, wherein:the first timing measurements are obtained by the mobile station from at least one base station, and the second timing measurements are obtained by the mobile station from a global navigation satellite system (GNSS);a time scale for the first timing measurements and a time scale for the second timing measurements are not interrelated; andestablishing a position fix for the mobile station based on the pseudoranges.. A method for a mobile station, comprising: This application is a Continuation of U.S. application Ser. No. 13/287,882, filed Nov. 2, 2011, and entitled “HYBRID POSITIONING USING SYNCHRONOUS AND ASYNCHRONOUS TECHNIQUES”, which application claims the benefit of U.S. Provisional Application No. 61/492,742, ...

Подробнее
Номер записи: 68
14-01-2021 дата публикации

WORK MACHINE WITH AUTOMATIC DETECTION OF POSITIONING CORRECTION DATA TRANSMITTERS

Номер: US20210010246A1
Автор: Sherlock Lance R.
Принадлежит:

A method performed by a computing system for a work machine at a worksite includes automatically identifying a set of local devices corresponding to the worksite based on signals detected from the set of local devices. Each of the local devices is configured to transmit correction data for correcting position data derived from a satellite navigation signal. One or more of the local devices is selected from the set of local devices, and the satellite navigation system is received, and used to generate the position data indicative of a geographic position of the work machine at the worksite. The method includes receiving the correction data from the one or more local devices, generating corrected position data by applying the correction data to the position data, and controlling the work machine based on the corrected position data. 1. A method performed by a computing system for a work machine at a worksite , the method comprising:automatically identifying a set of local devices corresponding to the worksite based on signals detected from the set of local devices, wherein each of the local devices is configured to transmit correction data for correcting position data derived from a satellite navigation signal;selecting one or more local devices from the set of local devices;receiving the satellite navigation signal;generating, from the received satellite navigation signal, the position data indicative of a geographic position of the work machine at the worksite;receiving the correction data from the one or more local devices;generating corrected position data by applying the correction data to the position data; andcontrolling the work machine based on the corrected position data.2. The method of claim 1 , wherein selecting comprises:displaying a user interface display including display elements that represents the set of local devices and includes a user input mechanism; andselecting the one or more local devices based on user input received through the user input ...

Подробнее
Номер записи: 69
14-01-2016 дата публикации

GNSS SIGNAL PROCESSING WITH IONOSPHERE MODEL FOR SYNTHETIC REFERENCE DATA

Номер: US20160011314A1
Автор: Chen Xiaoming, Drescher Ralf, Leandro Rodrigo
Принадлежит:

Some embodiments of the present invention derive an ionospheric phase bias and an ionospheric differential code bias (DCB) using an absolute ionosphere model, which can be estimated from data obtained from a network of reference stations or obtained from an external source such as WAAS, GAIM, IONEX or other. Fully synthetic reference station data is generated using the ionospheric phase bias and/or the differential code bias together with the phase leveled clock and ionospheric-free code bias and/or MW bias. 1. A method of processing a set of GNSS signal data derived from code observations and carrier-phase observations at multiple receivers of GNSS signals of multiple satellites over multiple epochs , the GNSS signals having at least two carrier frequencies , comprising:a. resolving a set of network ambiguities,b. determining from an ionospheric model an ionospheric delay per epoch per receiver-satellite pairing, andc. using the network ambiguities and the ionospheric delays to estimate an ionospheric phase bias per satellite.2. The method of claim 1 , wherein estimating an ionospheric phase bias comprises claim 1 , per satellite-receiver pair claim 1 , forming an ionospheric phase combination and determining the ionospheric phase bias as a combination of the ionospheric phase combination and the ionospheric delay and the resolved network ambiguities.3. The method of claim 1 , wherein resolving a set of network ambiguities comprises resolving at least a widelane ambiguity per receiver-satellite pairing and a narrowlane ambiguity per receiver-satellite pairing.4. The method of claim 1 , wherein estimating an ionospheric phase bias per satellite comprises applying an ionospheric phase bias constraint.5. The method of claim 1 , further comprising estimating an ionospheric differential code bias (DCB) per satellite using the ionospheric code observation and the ionospheric delay per satellite-receiver pair.6. The method of claim 1 , wherein estimating an ionospheric ...

Подробнее
Номер записи: 70
14-01-2016 дата публикации

METHOD AND APPARATUS FOR POSITION MEASURING OF PORTABLE ELECTRONIC DEVICE

Номер: US20160011315A1
Автор: CHUNG Do-Hyoung, PARK Jeong-Min
Принадлежит:

A method for position measurement of a portable electronic device is provided. The method includes receiving, from a first satellite, first satellite information and state information of the first satellite information, receiving other state information of the first satellite information from a server that receives the other state information of the first satellite information from a terrestrial observatory, and using the first satellite information for the position measurement of the portable electronic device when the state information of the first satellite information received from the first satellite is unhealthy and the other state information of the first satellite information received from the server is healthy, wherein healthy state information indicates that satellite information may be used for the position measurement of the portable electronic device and unhealthy state information indicates that the satellite information may not be used for the position measurement of the portable electronic device. 18.-. (canceled)9. An apparatus comprising:a first communication module;a second communication module; and receive, using the first communication module, location information corresponding to the apparatus and first state information corresponding to a satellite from the satellite;', 'receive, using the second communication module, second state information corresponding to the satellite from an external device;', 'determine a state of the satellite based at least in part on the first state information or the second state information;', 'identify a position of the apparatus using the location information based at least in part on a determination that the state satisfies a specified condition; and', 'refrain from identifying the position using the location information based at least in part on a determination that the state does not satisfy the specified condition., 'a processor configured to10. The apparatus of claim 9 ,wherein the first communication module ...

Подробнее
Номер записи: 71
11-01-2018 дата публикации

Gps computation cycling

Номер: US20180011197A1
Автор: Dori WALDMAN, Eli Mordechai, Ran SNIR
Принадлежит: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

A method for cycling GPS computations is described in which, at a beginning of a cycle, N computing devices are determined to be members of a device group. At each of N points within the cycle: a target device of the N computing devices is instructed to compute its target location data; another member of the device group is instructed to refrain from computing its other location data; target location data is received from the target device; and the target location data is transmitted to each other member of the device group.

Подробнее
Номер записи: 72
10-01-2019 дата публикации

POSITION ESTIMATION DEVICE, POSITION ESTIMATION METHOD, AND RECORDING MEDIUM

Номер: US20190011269A1
Автор: MATSUSHITA Yusuke
Принадлежит:

Disclosed is a position estimation device for estimating position information of the position estimation device itself using detection information detected by a position detector and predetermined map information acquired from a server apparatus connected via a network. The position estimation device includes one or more processors; and a memory, the memory storing instructions, which when executed by the one or more processors, cause the one or more processors to: determine priorities of a plurality of regions, using region information including respective information pieces of the plurality of regions around the position estimation device and one of the detection information and the position information; and to acquire the predetermined map information corresponding to at least some of the plurality of regions from the server apparatus in accordance with the determined priorities. 1. A position estimation device for estimating position information of the position estimation device itself using detection information detected by a position detector and predetermined map information acquired from a server apparatus connected via a network , the position estimation device comprising:one or more processors; anda memory, the memory storing instructions, which when executed by the one or more processors, cause the one or more processors to:determine priorities of a plurality of regions, using region information including respective information pieces of the plurality of regions around the position estimation device and one of the detection information and the position information; andacquire the predetermined map information corresponding to at least some of the plurality of regions from the server apparatus in accordance with the determined priorities.2. The position estimation device according to claim 1 , whereinthe region information includes information indicating whether a communication with the network is available in each of the plurality of regions.3. The ...

Подробнее
Номер записи: 73
10-01-2019 дата публикации

WIRELESS RFID NETWORKING SYSTEMS AND METHODS

Номер: US20190012496A1
Автор: Shoarinejad Kambiz
Принадлежит:

Embodiments of the present invention include a wireless access point that acquires and processes radio frequency identification (RFID) information. The wireless access point may be coupled to a network of RFID readers over a wireless network. The RFID readers may read a plurality of RFID tags and transmit information to one or more readers. The readers may, in turn, transmit the RFID information to a wireless access point. The wireless access point may include a middleware layer for performing a variety of RFID data processing functions. In one embodiment, the wireless RFID reader network may be used to improve positioning of readers and tags, and may include a GPS system or position assisted GPS system at the reader and/or tag level. 1. A wireless access point apparatus for acquiring and processing radio frequency identification (RFID) information , comprising:a first physical layer interface to a wireless link, wherein said first physical layer interface communicates first RFID data to said wireless access point from a plurality of RFID readers, wherein said plurality of RFID readers read a plurality of RFID tags, and wherein said first RFID data results from reading said plurality of RFID tags;a second physical layer interface to a wired or wireless link, wherein said second physical layer interface communicates second RFID data from said wireless access point to a server; receiving, from a first RFID reader of said plurality of RFID readers, first tag information related to a first RFID tag of said plurality of RFID tags; and', 'storing said first tag information as said first RFID data., 'wherein said wireless access point executes processing including2. The apparatus of claim 1 , wherein said wireless access point executes processing further including:processing said first RFID data; andtransmitting said second RFID data to said server, wherein said second RFID data corresponds to said first RFID data having been processed.3. The apparatus of claim 2 , wherein ...

Подробнее
Номер записи: 74
11-01-2018 дата публикации

Power Preservation in GPS-Equipped Tracking Devices

Номер: US20180014250A1
Автор: de Barros Chapiewski Guilherme
Принадлежит:

Power can be preserved in a tracking device equipped with a GPS receiver and a transceiver by evaluating the proximity of the tracking device to a mobile device and enabling the GPS receiver and transceiver only in the event that the tracking device is out of the range of the mobile device. Once enabled, the location of the tracking device can be determined based on location information received from the GPS receiver. The determined location can be provided to a tracking system associated with the tracking device. The tracking system can then inform an owner of the tracking device of the determined location. Once the tracking device has been found, the GPS receiver and the transceiver can be disabled to save additional power. 1. A method for preserving battery power in a tracking device comprising a GSM transceiver and a GPS unit , comprising: disabling, by the tracking device, the GSM transceiver and the GPS unit;', 'determining, by the tracking device, if a set of lost conditions is satisfied; and', 'in response to determining that the set of lost conditions are satisfied, configuring the tracking device to operate in a lost device mode; and, 'when the tracking device is configured to operate in a power preservation mode enabling, by the tracking device, the GSM transceiver and the GPS unit;', 'determining, by the tracking device, a location of the tracking device based on location information received from the GPS unit;', 'transmitting, by the tracking device, the determined location of the tracking device via the GSM transceiver to a tracking system configured to inform an owner of the tracking device of the determined location; and', 'in response to determining that the tracking device has been found, configuring the tracking device to operate in the power preservation mode., 'when the tracking device is configured to operate in the lost device mode2. The method of claim 1 , wherein the set of lost conditions are received by the tracking device from the ...

Подробнее
Номер записи: 75
03-02-2022 дата публикации

METHOD FOR PROVIDING AUTHENTICATED CORRECTION INFORMATION, PLURALITY OF REFERENCE STATIONS AND A REDUNDANT CENTRAL COMPUTATION UNIT, GNS SYSTEM AND SOFTWARE PRODUCT AND/OR NETWORK FOR PROVIDING A CORRECTION INFORMATION MESSAGE IN A GNS SYSTEM OR OTHER MEANS

Номер: US20220035041A1
Автор: ARBINGER Christian, BAUERHIN Andre, HAUSCHILD André
Принадлежит:

A method for providing authenticated correction information, in particular orbit, clock and bias/offset correction information, to a mobile receiver in a GNS system, including: receiving raw data from satellites at a plurality of reference stations; forwarding the raw data received at the reference stations to a central computation unit, in particular to a single central computation unit, using a data stream, in particular a common data stream; determining the correction information at the computation unit based on the raw data received from the different reference stations and transmitting the correction information via at least one satellite to the receiver for reliably determining a position of the mobile receiver. 1. A method for providing correction information , in particular orbit , clock and/or bias/offset correction information , to a mobile receiver in a GNS system , comprising:receiving raw data from satellites at a plurality of reference stations;forwarding the raw data received at the reference stations to a central computation unit in a real-time data stream;determining the correction information at the computation unit based on the raw data received from the different reference stations andtransmitting the correction information via at least one satellite to the receiver for determining a position of the mobile receiver.2. The method according to claim 1 , wherein in addition to the correction information a navigation information is transmitted via the at least one satellite.3. The method according to claim 1 , wherein the at least one satellite orbits earth in a distance between 200 km and 30 claim 1 ,000 km.4. The method according to claim 1 , wherein the at least one satellite orbits earth with an eccentricity of less than 0.2 and/or in an inclined orbit.5. The method according to claim 1 , wherein five or more satellites are used for providing correction information and/or navigation information.6. The method according to claim 1 , wherein ...

Подробнее
Номер записи: 76
19-01-2017 дата публикации

Detecting User Content Using Wireless Signal Characteristics

Номер: US20170016975A1
Автор: Bhadricha Chetan Parshottam, Maggiolo Stefano, Varshavsky Alexander
Принадлежит:

Systems and methods are provided for determining a user context based on one or more wireless signals. In particular, location data can be determined by a user device. The user device can then detect beacon data broadcast by a first set of beacon devices, and subsequent to detecting the first beacon data, second beacon data broadcast by a second set of beacon devices. The location data can be compared with the first beacon data and the second beacon data to determine a user context. In particular, a context can be determined based at least in part on whether the location data is indicative of a changing location of a user, and whether the second beacon data corresponds to a change in beacon data from the first beacon data. 1. A computer-implemented method of determining user context , the method comprising:receiving, by one or more computing devices, location information associated with a user;detecting, by the one or more computing devices, first beacon data broadcast by a first set of beacon devices;subsequent to detecting the first beacon data, detecting, by the one or more computing devices, second beacon data broadcast by a second set of beacon devices;determining, by the one or more computing devices, whether the received location information is indicative of a changing location of the user;determining, by the one or more computing devices, whether the second beacon data corresponds to a change in beacon data from the first beacon data;determining, by the one or more computing devices, a context associated with the user based at least in part on whether the received location information corresponds to a changing location of the user and based at least in part on whether the second beacon data corresponds to a change in beacon data from the first beacon data; andproviding for display, by the one or more computing devices, one or more notifications associated with the determined context.2. The computer-implemented method of claim 1 , wherein determining whether ...

Подробнее
Номер записи: 77
19-01-2017 дата публикации

SATELLITE MODEM LOCATION TRACKING

Номер: US20170016992A1
Автор: Harrington Emanuel Girard, Nichols Dillon James, Yuan Yong Kang
Принадлежит: HUGHES NETWORK SYSTEMS, LLC

A satellite modem, a GPS device, and a method are provided. The satellite modem requests current location information from a GPS device and waits no more than a preconfigured amount of time to receive the current location information. When the satellite modem receives the current location information, the satellite modem determines whether the current location information indicates a location in which the satellite modem is authorized to operate. When the satellite modem determines that the current location information indicates a location in which the satellite modem is not authorized to operate, the satellite modem performs at least one action from a group of actions including preventing the satellite modem from operating normally, permitting the satellite modem to operate with a reduced functionality, and transmitting a message to a network management center indicating that the satellite modem is not located at an authorized location. 1. A satellite modem of an indoor unit for use with a very small aperture terminal , the satellite modem comprises:a transceiver for transmitting and receiving signals via an inter-facility link connecting the satellite modem with an outdoor unit of the very small aperture terminal; requesting location information from a GPS device,', 'waiting up to a preconfigured amount of time to receive the location information from the GPS device,', determining, by the microcontroller, whether the location information indicates a location in which the satellite modem is authorized to operate, and', 'when the microcontroller determines that the location information indicates a location at which the satellite modem is not authorized to operate, performing at least one action selected from a group of actions consisting of: preventing the satellite modem from operating, permitting the satellite modem to operate with a reduced functionality, and transmitting a message to a network management center indicating that the satellite modem is located at ...

Подробнее
Номер записи: 78
17-01-2019 дата публикации

COMMUNICATIONS SYSTEM

Номер: US20190018145A1
Автор: ROOVERS Raf Lodewijk Jan
Принадлежит:

A communications system comprising a master-node and a slave-node. The master-node comprising: a GNSS receiver configured to provide a GNSS based time reference signal; a master-timing-reference-calibrator configured to determine a master-timing-reference-calibration-signal, for calibrating the master reference timing circuit, based on the GNSS based time reference signal; and a master-reference-timing-circuit configured to provide a master-clock-signal based on the master-timing-reference-calibration-signal, wherein the master-clock-signal is a clock signal for the master-node; and a master-transmitter configured to determine a master-communications-signal using the master-clock signal. The slave-node comprising: a slave-receiver configured to receive the master-communications-signal from the master-node; a slave-timing-reference-calibrator configured to determine a slave-timing-reference-calibration-signal based on the master-communications-signal; and a slave-timing-reference-circuit configured to provide a slave-clock-signal based on the slave-timing-reference-calibration-signal, wherein the slave-clock-signal is a clock signal for the slave-node. 1. A communications system comprising: a GNSS receiver configured to provide a GNSS based time reference signal;', 'a master-timing-reference-calibrator configured to determine a master-timing-reference-calibration-signal, for calibrating the master reference timing circuit, based on the GNSS based time reference signal; and', 'a master-reference-timing-circuit configured to provide a master-clock-signal based on the master-timing-reference-calibration-signal, wherein the master-clock-signal is a clock signal for the master-node; and', 'a master-transmitter configured to determine a master-communications-signal using the master-clock-signal;, 'a master-node comprising a slave-receiver configured to receive the master-communications-signal from the master-node;', 'a slave-timing-reference-calibrator configured to ...

Подробнее
Номер записи: 79
16-01-2020 дата публикации

Removal of Directwave High Frequency Signal for Ionospheric Sounder Return Processing

Номер: US20200018841A1
Автор: Fenske, JR. Robert G., Martin Brock A., Nixon James H., Signorotti John J.
Принадлежит:

A method of operating a vertical incidence sounder. The sounder transmits a random modulated sounder signal, and receives a return signal, comprising a directwave component and a reflected component. A first cross-ambiguity process between the transmitted signal and the return signal is used to time and frequency align the return signal with the transmitted signal. The direct wave signal is removed, thereby producing a processed return signal. A second cross-ambiguity process between the transmitted signal and the processed return signal is performed to determine a time offset, which is used to estimate an ionospheric height. 1. A method of operating a vertical incidence sounder , comprising:generating a random modulated sounder waveform;transmitting a random modulated signal based on the sounder waveform;receiving a return signal, comprising a directwave component and a reflected component;performing a first cross-ambiguity process between the transmitted signal and the return signal;using a first peak value from the results of the first cross-ambiguity process to time and frequency align the return signal with the transmitted signal;removing the direct wave signal, thereby producing a processed return signal;performing a second cross-ambiguity process between the transmitted signal and the processed return signal; andusing a second peak value from the result of the cross-ambiguity process to determine a time offset; andusing the time offset to determine an ionospheric height.2. The method of claim 1 , further comprising the steps of using the second peak value to determine a frequency offset claim 1 , and using the frequency offset to determine a Doppler shift.3. The method of claim 1 , wherein the step of removing the direct wave signal is performed with a nulling process.4. The method of claim 1 , wherein the step of using a second peak value to determine a time offset is performed by determining peaks above a predetermined time delay threshold.5. The method of ...

Подробнее
Номер записи: 80
21-01-2021 дата публикации

Method for Operating a GNSS Sensor of a Vehicle

Номер: US20210018631A1
Автор: Ewert Marlon Ramon
Принадлежит:

A method for operating a GNSS sensor of a vehicle having control operations influenceable via an electronic control unit includes receiving satellite data, evaluating the satellite data, and deactivating at least one operating mode of the GNSS sensor when at least a portion of the satellite data is unsuitable for determining the position of the vehicle. 1. A method for operating a GNSS sensor of a vehicle having control operations influenceable via an electronic control unit , comprising:receiving satellite data;evaluating the satellite data; anddeactivating at least one operating mode of the GNSS sensor if when at least a portion of the satellite data is unsuitable for determining the position of the vehicle.2. The method as claimed in claim 1 , wherein:the received satellite data includes information indicating that the satellite data are faulty or corrupted; anddeactivating the at least one operating mode of the GNSS sensor includes deactivating the at least one operating mode of the GNSS sensor based on the information from the satellite data indicating that said data are faulty or corrupted.3. The method as claimed in claim 1 , further comprising:supplying information indicating that the satellite data are faulty or corrupted via a communication link,wherein deactivating the at least one operating mode of the GNSS sensor includes deactivating the at least one operating mode of the GNSS sensor based on the supplied information.4. The method as claimed in claim 1 , wherein:evaluating the satellite data includes evaluating the satellite data based upon an area in which the vehicle is located; anddeactivating the at least one operating mode of the GNSS sensor includes deactivating the at least one operating mode of the GNSS sensor when the vehicle is located in a predetermined area.5. The method as claimed in claim 1 , further comprising:reporting the deactivation of the at least one operating mode of the GNSS sensor to a superordinate system.6. The method as ...

Подробнее
Номер записи: 81
19-01-2017 дата публикации

METHOD AND APPARATUS FOR SHARING DATA BETWEEN POSITIONING DEVICES

Номер: US20170019763A1
Автор: Chi Haizhang, WANG Jinyan, Zhu Yong
Принадлежит:

A method for sharing data between positioning devices includes acquiring, by a first positioning device, auxiliary data from a positioning server, wherein the auxiliary data is used by the first positioning device to determine a position of the first positioning device by combining the auxiliary data with original geographical location information corresponding to the first positioning device; and sending, by the first positioning device, the auxiliary data to a second positioning device to facilitate the second positioning device determining a position of the second positioning device according to the auxiliary data and original geographical location information that corresponds to the second positioning device; wherein the second positioning device and the first positioning device are located in a same local area network. 1. A method for sharing data between positioning devices , comprising:acquiring, by a first positioning device, auxiliary data from a positioning server, wherein the auxiliary data is used by the first positioning device to determine a position of the first positioning device by combining the auxiliary data with original geographical location information corresponding to the first positioning device; andsending, by the first positioning device, the auxiliary data to a second positioning device to facilitate the second positioning device determining a position of the second positioning device according to the auxiliary data and original geographical location information that corresponds to the second positioning device;wherein the second positioning device and the first positioning device are located in a same local area network.2. The method according to claim 1 , wherein acquiring the auxiliary data from the positioning server further comprises:parsing the auxiliary data, wherein the auxiliary data comprises one or a combination of the following data: an ephemeris, an almanac, a time, and status data.3. The method according to claim 1 , wherein ...

Подробнее
Номер записи: 82
18-01-2018 дата публикации

System and method for creating an electronic signature containing a captured signature, date and time, physical location address, and unique identifier.

Номер: US20180019987A1
Автор: Pham Thien
Принадлежит:

System and method for creating an electronic signature containing a captured signature, date and time, physical location address, and unique identifier. 1. A method for creating an electronic signature comprising the steps of:(a) capturing a signature;(b) getting a GPS coordinate of the device being used to capture a signature;(c) connecting a GPS server to retrieve the physical address using the GPS coordinate at Step (b);(d) creating a unique identifier to represent the electronic signature;(e) creating an electronic signature using the captured signature at Step (a), the date and time the captured signature was created at Step (a), the physical address returned by the GPS server at Step (c), and the created unique identifier at Step (d).2. The method of claim 1 , wherein the returned physical address may contain all or parts of a physical address.3. The method of claim 1 , wherein the electronic signature consists of the captured signature drawn by the movement of a computer mouse claim 1 , finger claim 1 , or stylus claim 1 , the date and time of the captured signature claim 1 , the physical address where the captured signature was created claim 1 , and a unique identifier. Not Applicable.Not ApplicableNot ApplicableThe present invention relates generally to a computer program that captures a signature, gets the Global Positioning System coordinate of the device, creates a unique identifier, and creates an electronic signature containing the captured signature, the date and time when the captured signature was created, the physical location where the captured signature was created, and the unique identifier of the captured signature.Electronic signature has been around for quite some time. There are many electronic signature companies out there offering different variations of the electronic signature. The problem with those electronic signature is that the electronic signature cannot be use to prove the identity of the signer.What is needed is a system and ...

Подробнее
Номер записи: 83
17-01-2019 дата публикации

GEOGRAPHIC LOCATION POSITIONING METHOD AND APPARATUS

Номер: US20190021067A1
Автор: Huang Chuantong
Принадлежит:

The embodiments of the present application provide a method and an apparatus for geographic location positioning. The method includes: first obtaining a target IP address of a target terminal device; then determining a plurality of geographic areas where the target IP address presents; determining at least one piece of real-time data corresponding to the target IP address from the database, wherein the real-time data includes a target geographic location where the target IP address presents within a predetermined period; determining a target geographic area currently corresponding to the target IP address from the plurality of geographic areas based on the target geographic location included in the real-time data; finally determining location information corresponding to the target terminal device based on the target geographic area. It can accurately locate a terminal device without depending on a positioning module of the terminal device itself by means of the solution. 1. A method for geographic location positioning , which is applicable in a server , comprising:obtaining a target IP address of a target terminal device;determining a plurality of geographic areas corresponding to the target IP address;obtaining at least one piece of real-time data corresponding to the target IP address, wherein the real-time data includes a target geographic location corresponding to the target IP address;determining a target geographic area currently corresponding to the target IP address from the plurality of geographic areas based on the target geographic location; anddetermining location information corresponding to the target terminal device based on the target geographic area.2. The method of claim 1 , wherein claim 1 , obtaining a target IP address of a target terminal device comprises:obtaining a TCP request for querying geographic location information sent by the target terminal device, and determining a target IP address of the target terminal device based on the TCP ...

Подробнее
Номер записи: 84
28-01-2016 дата публикации

METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION

Номер: US20160025860A1
Автор: Biacs Zoltan F., Gum Arnold Jason, Moeglein Mark Leo, Sheynblat Leonid, Wengler Michael James
Принадлежит:

A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. 1. A processor-implemented method on a mobile station of locating a satellite , the method comprising:receiving, by the mobile station, coarse orbit data of the satellite;generating, by the mobile station, a coarse satellite position of the satellite using the coarse orbit data, the coarse satellite position being computed in a standard coordinate system represented by a 3-Dimensional Earth Centered Earth Fixed XYZ coordinate system;receiving, by the mobile station, coarse orbit correction data of the satellite, wherein the coarse orbit correction data is calculated using the coarse orbit data of the satellite and predicted orbit data of the satellite, the predicted orbit data being more accurate than the coarse orbit data;calculating, by the mobile station, at least one spatial correction value to the coarse orbit data based, at least in part, on the coarse orbit correction data;converting, by the mobile station, the at least one spatial correction value from a satellite-centered coordinate system to the standard coordinate system; anddetermining, by the mobile station, a corrected position of the satellite using the coarse satellite position of the satellite and the at least one ...

Подробнее
Номер записи: 85
28-01-2016 дата публикации

METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION

Номер: US20160025862A1
Автор: Biacs Zoltan F., Gum Arnold Jason, Moeglein Mark Leo, Sheynblat Leonid, Wengler Michael James
Принадлежит:

A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data. 1. A processor-implemented method on a mobile station , comprising:estimating predicted orbit data of a second satellite at least in part by applying correction information for the second satellite received at the mobile station to previous orbit data for the second satellite stored at the mobile station, wherein the correction information for the second satellite is represented by a series of mathematical functions;combining real-time orbit data of a first satellite and the predicted orbit data of the second satellite at least in part to determine a first estimated location for the mobile station;switching from the real-time orbit data of the first satellite to predicted orbit data of the first satellite in response to at least one of: expiration of a period of validity of the real-time orbit data of the first satellite, or a lack of line of sight to the first satellite, or a lack of signal reception from the first satellite; andusing the predicted orbit data of the first satellite at least in part to determine a second estimated location for the mobile station.2. The method of claim 1 , wherein:the series of mathematical functions representing the correction information for the ...

Подробнее
Номер записи: 86
25-01-2018 дата публикации

LOW-ENERGY CONSUMPTION LOCATION OF MOVABLE OBJECTS

Номер: US20180024247A1
Автор: Carter Scott J.
Принадлежит:

Low-energy consumption techniques for locating a movable object using a global satellite navigation system (GNSS) are provided. A mobile station attached to or included in a movable object can communicate bidirectionally with a fixed base station to determine a location of the movable object. The mobile station may communicate an estimated position to the base station and receive from the base station a set of GNSS satellites that are visible to the mobile station. The mobile station can acquire satellite timing information from GNSS signals from the set of satellites and communicate minimally-processed satellite timing information to the base station. The base station can determine the position of the mobile station and communicate the position back to the mobile station. By offloading much of the processing to the base station, energy consumption of the mobile station is reduced. 1. (canceled)2. A location system for movable objects , the location system using a global navigation satellite system (GNSS) , the location system comprising: a mobile GNSS receiver configured to receive GNSS signals;', 'a mobile transceiver configured to communicate over a communication link comprising a frequency in an unlicensed radio frequency (RF) band; and', wake up at a time or under a condition specified in sleep parameters;', 'estimate a position of the mobile station;', 'estimate an orientation of the mobile station;', 'transmit the estimated position and the estimated orientation of the mobile station and a local mobile clock value to a base station via the mobile transceiver;', 'receive information associated with GNSS clock and acquisition parameters from the base station;', 'update the local mobile clock value based at least in part on the information associated with GNSS clock;', 'cause the mobile GNSS receiver to acquire GNSS signals,', 'based at least in part on the acquisition parameters;', 'transmit information related to chip transitions in the acquired GNSS signals ...

Подробнее
Номер записи: 87
25-01-2018 дата публикации

SYSTEMS AND METHODS FOR NEQUICK MODELING USING NEURAL NETWORKS

Номер: US20180024248A1
Автор: Fedra Zbynek, Orejas Martin, Raasakka Jussi
Принадлежит:

Systems and methods of determining ionosphere delay for a GNSS system are provided. In one embodiment, a GNSS system includes an antenna configured to receive GNSS signals from one or more GNSS satellites. The system further includes a signal processing circuit coupled to the antenna and configured to down convert the GNSS signals from RF to IF. The system further includes a processing device coupled to a memory, the memory including a database of a plurality of weights and an activation function for a neural network, the neural network trained to output an approximation of an output of a NeQuick model. The processing device configured to: apply the plurality of weights and the activation function for the neural network to a plurality of inputs generated from the GNSS signals; and estimate an indication of ionosphere delay based on an output of the neural network. 1. A Global Navigation Satellite System (GNSS) system comprising:an antenna configured to receive Global Navigation Satellite System (GNSS) signals from one or more GNSS satellites;a signal processing circuit coupled to the antenna, wherein the signal processing circuit is configured to down convert the GNSS signals from a radio frequency (RF) to an intermediate frequency (IF); and apply the plurality of weights and the activation function for the neural network to a plurality of inputs generated from the GNSS signals;', 'estimate an indication of ionosphere delay based on an output of the neural network., 'a processing device coupled to a memory, wherein the memory includes a database of a plurality of weights and an activation function for a neural network, wherein the neural network is trained to output an approximation of an output of a NeQuick model, wherein the processing device is configured to2. The GNSS system of claim 1 , wherein the plurality of inputs comprises nine inputs claim 1 , wherein each input of the plurality of inputs corresponds to an input of the NeQuick model.3. The GNSS system of ...

Подробнее
Номер записи: 88
10-02-2022 дата публикации

Communications Method and Apparatus

Номер: US20220043097A1
Автор: LI CHAO, WANG Junwei
Принадлежит:

A first device determines, based on a location of the first device and a quality of service parameter of first data, an identity of a first zone in which the first device is located, where the first data is data sent by the first device. The first device sends indication information, where the indication information includes first information, and the first information indicates the identity of the first zone. 1. A communication method , wherein the method comprises:determining, based on a location of a first device and minimum required communication distance information of first data, a first identity of a first zone in which the first device is located, wherein the first data is data sent by the first device; andsending indication information to a second device, wherein the indication information comprises first information, and the first information indicates the first identity.2. The method according to claim 1 , wherein the determining claim 1 , based on a location of a first device and minimum required communication distance information of first data claim 1 , a first identity of a first zone in which the first device is located comprises:obtaining, based on the minimum required communication distance information, a first length of the first zone, wherein the first length of the first zone corresponds to the minimum required communication distance information; anddetermining the first identity based on the first length and the location of the first device.3. The method according to claim 2 , wherein claim 2 , [{'br': None, 'i': x', 'x/L', 'Nm, 'sub': '1', '=Floor()Mod();'}, {'br': None, 'i': y', 'y/L', 'Nm, 'sub': '1', '=Floor()Mod();'}, {'br': None, 'i': y', '*Nm+x, 'sub': 1', '1, 'Grid_id=;'}], 'the first identity meets the following formulas{'sup': 'n/2', 'wherein, the Grid_id is the first identity, (x, y) is the location of the first device, L represents the first length, Nm=2, n indicates a total quantity of bits of the first identity, Floor represents ...

Подробнее
Номер записи: 89
10-02-2022 дата публикации

PROXIMITY-BASED NAVIGATION METHOD

Номер: US20220043163A1
Автор: LAPIDOT ZVI, TIROSH EHUD
Принадлежит: VEERIDE GEO LTD.

A method for improving accuracy of a raw GPS positioning of an untargeted pedestrian device wherein the pedestrian device receives from a nearby vehicle device a message containing a calculated offset between a raw GPS location of the vehicle and a corrected location of the vehicle, the message being received as a direct consequence of the pedestrian device and the vehicle device coming into mutual communication range without a need for pairing between the two devices. The calculated offset is applied to the raw GPS positioning of the pedestrian device to obtain a more accurate location of the pedestrian device. 1. A method for improving accuracy of a raw GPS positioning of an untargeted pedestrian device , the method comprising:(a) the pedestrian device receiving from a nearby vehicle device in Bluetooth™ communication range a message containing a calculated offset between a raw GPS location of the vehicle and a corrected location of the vehicle, the message being a popup notification that encapsulates the calculated offset and is received without a need for pairing between the two devices;(b) the pedestrian device ensuring that the vehicle is within a sufficiently narrow range of the pedestrian device that the received offset is applicable to the pedestrian device either by employing a Bluetooth™ protocol that permits mutual communication only within said narrow range or by relating only to signals from a passing vehicle whose measured signal strength exceeds a predetermined threshold;(c) the pedestrian device decoding said message to extract the calculated offset; and(d) applying the calculated offset to the raw GPS positioning of the pedestrian device so as to obtain a more accurate location of the pedestrian device.2. The method according to claim 1 , wherein the message is transmitted by the vehicle using Bluetooth™ as a response to a Bluetooth™ enquiry sent by the pedestrian device.3. The method according to claim 2 , wherein the calculated offset is ...

Подробнее
Номер записи: 90
10-02-2022 дата публикации

METHOD OF MEASURING THE DISTANCE TO A SATELLITE IN CONSIDERATION OF QUANTUM AND GRAVITY EFFECTS, METHOD OF MEASURING A LOCATION USING THE SAME, AND USER TERMINAL

Номер: US20220043165A1
Автор: Ahn Do Yeol
Принадлежит: UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION

A method of measuring a distance to a satellite, which is performed by an electronic device, according to an exemplary embodiment of the present invention, the method comprises receiving a linearly polarized photon from and angular momentum per unit mass of the satellite the satellite; measuring an amount of rotation of the polarized photon, the rotation being induced by a space-time warpage due to gravity; and calculating a distance to the satellite by using the rotation amount of the polarized photon and the angular momentum per unit mass of the satellite. The distance to the satellite may be calculated by the following equation, 1. A method of measuring a distance to a satellite , which is performed by an electronic device , the method comprising:receiving a linearly polarized photon and angular momentum per unit mass of the satellite from the satellite;measuring an amount of rotation of the polarized photon, the rotation being induced by a space-time warpage due to gravity; andcalculating a distance to the satellite by using the rotation amount of the polarized photon and the angular momentum per unit mass of the satellite.3. A method of measuring a location comprising:receiving, by an electronic device, from at least three or more satellites, a polarized photon of each satellite and angular momentum per unit mass of the satellites;measuring, by the electronic device, an amount of rotation of the polarized photon of each satellite, the rotation being induced by warpage of space-time due to gravity;calculating, by the electronic device, a distance to each satellite by using a rotation amount of polarization of each satellite and an angular momentum per unit mass of each satellite; andcalculating a position relative to each of the satellites by the electronic device by using the distance to each of the satellites.5. The method of claim 3 , wherein the electronic device further receives a coordinated of each of the satellites from each of the satellites claim 3 , ...

Подробнее
Номер записи: 91
24-01-2019 дата публикации

INFORMATION PROCESSING APPARATUS, CALCULATION METHOD, AND POSITIONING SYSTEM

Номер: US20190025434A1
Автор: TAKEDA HARUTO
Принадлежит:

[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 ...

Подробнее
Номер записи: 92
24-04-2014 дата публикации

GNSS FINE-TIME ASSISTANCE OVER RTT-CAPABLE WIRELESS NETWORKS

Номер: US20140111375A1
Автор: Beauregard Stephen Joseph
Принадлежит: QUALCOMM INCORPORATED

Systems and methods of providing fine-time assistance (FTA) for a mobile device are described herein. A GNSS time is received from a GNSS satellite at a GNSS receiver. The GNSS time is then transferred to an access point (AP) over a wired network. The AP is coupled to the mobile device over a wireless local area network (WLAN). A round trip time (RTT) between the AP and the mobile device over the WLAN is determined, for example by exchanging one or more communications between the mobile device and the AP over the wireless local area network (WLAN). The GNSS time is then transferred from the AP to the mobile device over the WLAN. A FTA based GNSS time is calculated at the mobile device based on the GNSS time received from the AP and the RTT. 1. A method of providing fine-time assistance (FTA) for a mobile device , the method comprising:receiving a first GNSS time at an access point (AP) over a wired network from a first GNSS receiver;determining a round trip time (RTT) between the AP and the mobile device over a wireless local area network (WLAN); andtransmitting the first GNSS time from the AP to the mobile device over the WLAN for calculating a FTA based GNSS time at the mobile device based on the first GNSS time from the AP and the RTT.2. The method of claim 1 , wherein the receiving is performed using an IEEE 1588 synchronization protocol or a precision time protocol (PTP).3. The method of claim 1 , wherein the wired network comprises a powerline communication (PLC) network configured according to IEEE 1901 standard.4. The method of claim 1 , wherein the first GNSS receiver has a clear view or unobstructed path to a first GNSS satellite.5. The method of claim 1 , wherein the WLAN is a WiFi network.6. The method of claim 1 , wherein the FTA based GNSS time is used to compute a first pseudo-range measurement or first distance from the mobile device to a first GNSS satellite claim 1 , the first GNSS time being from the first GNSS satellite.7. The method of claim 1 , ...

Подробнее
Номер записи: 93
24-04-2014 дата публикации

Manipulation Resilient Time Distribution Network

Номер: US20140111377A1
Автор: Achanta Shankar V., Huntley Christopher R., Zweigle Gregary C.
Принадлежит: SCHWEITZER ENGINEERING LABORATORIES, INC.

Disclosed herein is a system for detecting manipulation of a global time source such as a Global Navigational Satellite System (GNSS) signal and mitigating against such manipulation. A plurality of receivers with geographical diversity receive GNSS signals, and calculate a time signal to be distributed to consuming devices. The receivers also communicate calculated time signals with other receivers. The receivers compare the time signals, and when a difference between the time signals exceeds a predetermined threshold, the receivers indicate that manipulation is likely. Such indication is shared across the network of receivers. The indication is further shared with consuming devices of the time signal from the compromised receiver. A second time signal that is not compromised may be shared with the consuming devices and/or used by the consuming devices. The consuming devices may modify their behavior when in receipt of the indication. 1. A system for detecting and mitigating against manipulated time signals , comprising:a first receiver configured to receive a first plurality of radio signals from a global time source and calculate a first time signal from the first plurality of radio signals; and receive the first time signal from the first receiver;', 'calculate a time difference between the first time signal and the second time signal;', 'compare the time difference with a defined time difference threshold; and', 'communicate a manipulation alarm to the first receiver in response to determining that the time difference exceeds the defined time difference threshold., 'a second receiver configured to receive a second plurality of radio signals from the global time source and calculate a second time signal from the second plurality of radio signals, the second receiver further configured to2. The system of claim 1 , wherein the first receiver is further configured to calculate a signal integrity based on the first plurality of radio signals and transmit the signal ...

Подробнее
Номер записи: 94
23-01-2020 дата публикации

Satellite Positioning Method and Satellite Positioning System

Номер: US20200025936A1
Автор: Bo Tang, Jianhua Zhou, Junping Chen, Yize ZHANG, Yueling CAO
Принадлежит: Shanghai Astronomical Observatory of CAS

The present application provides a satellite positioning method and a satellite positioning system. The system includes a satellite, a base station, an observation station. The observation station is provided with a monitoring terminal and a correction parameters information generating apparatus, the monitoring terminal receiving observation data transmitted from the satellite; the correction parameters information generating apparatus generating a correction parameters based on the observation data, the correction parameters being transmitted to the base station. The base station is provided with a switch and a message parameter superimposition-encoding-and-broadcasting apparatus, the switch receiving a basic navigation message from the satellite; the message parameter superimposition-encoding-and-broadcasting apparatus encoding the correction parameters into the basic navigation message by protocol superimposition, and setting the broadcasting of the integrated-encoded message into which the correction parameters is encoded, the integrated-encoded message being transmitted to the satellite by the switch via an uplink injection link.

Подробнее
Номер записи: 95
23-01-2020 дата публикации

Differential Correction Map for GNSS

Номер: US20200025937A1
Автор: KROEGER Brian, Peyla Paul J., Teig Steven L.
Принадлежит:

A method comprises generating for a Global Navigation Satellite System (GNSS) a differential correction map (DCM) representing a non-planar surface of differential corrections that varies across a geographical area represented by the DCM, the differential corrections being based on a reference station constellation of GNSS reference stations having respective locations spanning the geographical area, the GNSS reference stations including physical or virtual reference stations. 1. A method comprising:generating for a Global Navigation Satellite System (GNSS) a differential correction map (DCM) representing a non-planar surface of differential corrections that varies across a geographical area represented by the DCM, the differential corrections being based on a reference station constellation of GNSS reference stations having respective locations spanning the geographical area, the GNSS reference stations including physical or virtual reference stations.2. The method of claim 1 , wherein the reference station constellation includes a virtual reference station constellation (VRSC) including virtual reference stations approximately uniformly spaced across the geographical area represented by the DCM.3. The method of claim 2 , further comprising:selecting the VRSC from a set of predetermined VRSCs,wherein the generating includes generating the DCM for the selected predetermined VRSC.4. The method of claim 3 , wherein the DCM includes:GNSS time; anda location of only one of the reference stations;an identifier of the VRSC;an identifier of each GNSS satellite in view of the geographical area represented by the DCM; andthe differential correction for each reference station for each frequency of each GNSS satellite in view.5. The method of claim 1 , wherein the reference stations are non-uniformly spaced across the geographical area represented by the DCM.6. The method of claim 1 , wherein the DCM includes an identifier of the DCM claim 1 , GNSS time claim 1 , the locations ...

Подробнее
Номер записи: 96
23-01-2020 дата публикации

GNSS PROCESSING WITH JUMP REDUCTION

Номер: US20200025938A1
Автор: Chen Xiaoming, Glocker Markus, Leandro Rodrigo, Talbot Nicholas Charles, Vollath Ulrich
Принадлежит:

Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position. 1. (canceled)2. A positioning method , the method comprising:obtaining for each epoch of a set of at least one epoch a respective synchronous position to be propagated to an anchor epoch;for each epoch of the set, combining the respective synchronous position with at least one rover position difference defining a change of rover position from the epoch of the respective synchronous position to the anchor epoch, to obtain a respective propagated position for the anchor epoch;obtaining a synchronous position for the anchor epoch;blending at least one propagated position for the anchor epoch with the synchronous position for the anchor epoch to obtain a blended anchor position for the anchor epoch; anddetermining a propagated rover position for a current epoch by combining the blended anchor position with at least one rover position difference defining a change of rover position from the anchor epoch to the current epoch.3. The method of claim 2 , wherein the blending comprises blending a selected number of propagated positions for the anchor epoch with the synchronous position for the anchor epoch.4. The method of claim 2 , wherein the blending is based on at least one weighting factor.5. The method of claim 4 , wherein the at least one weighting factor is based on age of a synchronous position used to obtain a propagated position which is blended to obtain the blended anchor position for the anchor epoch.6. The method of claim 5 , wherein the at least one weighting factor declines linearly with age of a synchronous position ...

Подробнее
Номер записи: 97
24-04-2014 дата публикации

Periodic Assistance Data Flow Control

Номер: US20140113608A1
Автор: Ismo Halivaara, Lauri Wirola
Принадлежит: Nokia Oyj

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.

Подробнее
Номер записи: 98
10-02-2022 дата публикации

Systems and methods for supporting location and country determination for 5g satellite access

Номер: US20220046578A1
Автор: Stephen William Edge
Принадлежит: Qualcomm Inc

Satellite access to a PLMN with a Fifth Generation (5G) core network (5GCN) is supported by a serving satellite NodeB (gNB). The gNB determines or verifies the country in which a user equipment (UE) is located to ensure that the UE is located in the same country as the PLMN. The gNB may determine the country of the UE based on UE measurements from broadcast satellite signals and a positioning ID (PID) broadcast for each radio cell. The PID frequently changes to prevent spoofing. The gNB may use multiple UE measurements from a moving radio cell over a period of time to generate a more accurate location for the UE. The gNB may indicate to a 5GCN whether the country of the UE has been verified. The 5GCN will determine the location and country of the UE if the gNB indicates that the country is not fully verified.

Подробнее
Номер записи: 99
04-02-2016 дата публикации

ENHANCED LOCATION BASED SERVICES

Номер: US20160033647A1
Автор: JR. James Timothy, Sauerwein
Принадлежит:

A device management system is comprised of a server-side proxy component and at least one back-end computer. The server-side proxy component is configured to receive ephemeris and almanac data from a source and information from at least one client describing the geographic location of the client. The server-side proxy component is configured to send the ephemeris and almanac data and the information from the client to a back-end computer. Responsive to receiving this data and information, the computer compiles it into GPS data relevant to the location of the client. 1. A system , comprising:a server-side proxy component; anda computer; receive ephemeris data and almanac data from a source;', 'receive information from a client describing a geographic location of the client; and', 'send the ephemeris data, the almanac data, and the information from the client describing the geographic location of the client to the backend computer; and, 'wherein the server-side proxy component is configured to receive the ephemeris data, the almanac data, and the information from the client describing the geographic location of the client; and', 'responsive to receiving the ephemeris data, the almanac data, and the information from the client describing the geographic location of the client, compile the ephemeris data and the almanac data into GPS data relevant to the information from the client describing the geographic location of the client., 'wherein the computer is configured to2. The system of claim 1 , wherein the server-side proxy component and the computer are located on the same physical device.3. The system of claim 1 , wherein the server-side proxy component is configured to request information from the client describing a geographic location of the client.4. The system of claim 1 , wherein the computer is configured to continuously send the GPS data to the client at fixed time intervals.5. The system of claim 4 , wherein the source is a GPS satellite and/or a data feed.6. ...

Подробнее
Номер записи: 100