СПОСОБ И СИСТЕМА ДЛЯ ПЕРЕДАЧИ IP-ПАКЕТОВ ПУТЕМ ОБЪЕДИНЕНИЯ НЕСКОЛЬКИХ КАНАЛОВ РАДИОСВЯЗИ ДЛЯ ВЫСОКОСКОРОСТНОЙ ПЕРЕДАЧИ ДАННЫХ

Изобретение относится к системам радиосвязи и, в частности, к системам радиосвязи, работающим в сетевой среде передачи данных. Сущность состоит в том, что мобильный радиотерминал (MWT) принимает IP-пакеты, предназначенные для наземной сети в заданном порядке следования, фрагментирует каждый из IP-пакетов на более мелкие фрагменты пакетов, добавляет идентификационную информацию в каждый из фрагментов пакетов и передает фрагменты пакетов параллельно друг другу по одновременно действующим спутниковым каналам. Принимающая станция принимает фрагменты пакетов, переданные от MWT, пересылает принятые фрагменты пакетов в наземный контроллер по сетевому соединению на основании идентифицирующей информации, добавленной во фрагменты пакетов. Наземный контроллер объединяет фрагменты пакетов в реконструированные IP-пакеты на основании идентифицирующей информации, добавленной во фрагменты, а также упорядочивает реконструированные IP-пакеты в заданном порядке следования на основании идентифицирующей информации ...

СПОСОБ И УСТРОЙСТВО ОБРАБОТКИ НАВИГАЦИОННЫХ СИГНАЛОВ И ОПРЕДЕЛЕНИЕ МЕСТОПОЛОЖЕНИЯ С ИСПОЛЬЗОВАНИЕМ ДОЛГОСРОЧНОЙ КОМПАКТНОЙ ЭФЕМЕРИДНОЙ ИНФОРМАЦИИ

Изобретение относится к технике связи и может использоваться в системах навигации. Технический результат состоит в повышении точности и надежности решения потребителем навигационной задачи за счет возможности контроля оперативной эфемеридной информации, повышения скорости осуществления прогноза эфемеридной информации на навигационном оборудовании, обладающем малыми вычислительными ресурсами. Для этого в способе и устройстве обработки навигационных сигналов и определения местоположения используют долгосрочную компактную эфемеридную информацию при создании навигационных систем и оборудования, работающих по сигналам СНС ГЛОНАСС, GPS, Galileo, BeiDou и др. с поддержкой режимов сетевого и автономного ассистирования в части эфемеридной информации (ЭИ). В способе применяют сверхбольшие шаги интегрирования уравнений движения навигационных космических аппаратов. Система включает в свой состав навигационный приемник, включающий антенно-фидерное устройство, аналоговые радиоприемные тракты сигналов ...

СПОСОБ КОРРЕКЦИИ ОШИБОК ПРЕДСКАЗАНИЯ ЗНАЧЕНИЙ ИЗМЕНЯЮЩИХСЯ ВО ВРЕМЕНИ СИГНАЛОВ, ВОЗМУЩАЕМЫХ РАЗЛИЧНЫМИ НЕКОНТРОЛИРУЕМЫМИ СИСТЕМАТИЧЕСКИМИ ЯВЛЕНИЯМИ

Изобретение относится к области радиотехники, а именно к коррекции предсказаний значений изменяющихся во времени сигналов, и может быть использовано для приема навигационных сообщений, посылаемых глобальными навигационными спутниковыми системами. Технический результат заключается в обеспечении возможности коррекции предсказания значений изменяющихся во времени сигналов, возмущаемых различными неконтролируемыми систематическими явлениями без ограничений существующих решений. Для этого способ содержит следующие этапы коррекции предсказаний параметра, включенного в принимаемый и изменяющийся во времени сигнал: оценка ошибки предсказания на основании первого набора значений, оцениваемых в течение определенного промежутка времени, сравнивая эти значения со значениями, ранее предсказанными для этого же определенного промежутка времени, анализ предсказанных временных рядов ошибок предсказания при помощи способа обработки сигнала и выделение долей систематических влияний, экстраполяция поведения ...

СПОСОБ ПЕРЕДАЧИ И ПРИЕМА СИГНАЛОВ НА БАЗОВОЙ СТАНЦИИ С АНТЕННОЙ РЕШЕТКОЙ В СОТОВОЙ СИСТЕМЕ СВЯЗИ И СОТОВАЯ СИСТЕМА СВЯЗИ

Изобретение относится к сотовой системе связи. Технический результат состоит в повышении качества передачи при переключении с одной базовой станции на другую. Имеющиеся каналы связи делятся на несколько классов. Базовая станция передает сигналы на мобильную станцию в первом классе каналов с широко направленным антенным лепестком. Затем определяется положение мобильной станции по сигналам, принимаемым на базовой станции от мобильной станции, базовая станция может передавать сигналы и получать сигналы от мобильной станции во втором классе каналов с узконаправленным антенным лепестком. 2 с. и 18 з. п. ф-лы, 8 ил.

MAGNETKOPF MIT KAPILLARER ANZIEHUNG UND HERSTELLUNGSVERFAHREN

Method of saving power by reducing reception time in a standby mode of a mobile communication terminal

A signal received by a mobile communication terminal in a standby mode is sampled, converted to digital, and stored. At least a part of the receive part is de-activated and the stored samples are processed. If it is decided that the samples contain insufficient data, the receive path may be re-activated to receive further samples. In this way, the various activities which the mobile needs to undertake while in the standby state (channel tracking, monitoring nearby base stations) are carried out with minimum drain on the power supply.

A method of determining a GPS position fix and a GPS receiver for the same

Mixed-media telecommunication call set-up

PROCEDURE AND SYSTEM FOR DISPATCHING POSITION-CODED PICTURES OVER A WIRELESS NET

POSITION DETECTION AND LOCATION PURSUIT IN A WIRELESS NETWORK

PROCEDURE AND DEVICE FOR THE PROCESSING OF SATELLITE SIGNALS WITHOUT TIME OF DAY INFORMATION

PROCEDURE AND EQUIPMENT FOR THE INCREASE OF THE SENSITIVITY OF A GPS OF RECEIVER

COMMUNICATION SYSTEM FOR SAFE MAIN LINE TRAIN REEF AND PROCEDURE FOR IT

MAKING THE MOBILE STATION LOCALIZATION OF MEANS GROUND-BASED ONE POSSIBLE ZELLULAREN NETWORK

PROCEDURE AND DEVICE FOR THE EXECUTION OF A TIMING SYNCHRONISATION

PROCEDURE AND DEVICE FOR THE INCREASE OF THE SENSITIVITY OF A GLOBAL POSITION SATELLITE RECEIVER

PROCEDURE FOR THE IMPROVEMENT OF THE SYNCHRONISATION BEHAVIOR IN ONE GLOBAL POSITIONING SYSTEM (GPS) RECEIVER

Fast search gps receiver

Autonomous orbit propagation system and method

Mixed-media telecommunication call set-up

Mobile station location determination in a radio communication system

Position detection and location tracking in a wireless network

Method for determining the co-ordinates of a satellite

INTEGRATED VEHICLE POSITIONING AND NAVIGATION SYSTEM, APPARATUS AND METHOD

AUTONOMOUS ORBIT PROPAGATION SYSTEM AND METHOD

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.

POSITION DETECTION AND LOCATION TRACKING IN A WIRELESS NETWORK

A locale simulator, for use in defining the placement of access points (APs) within an area monitored by a wireless device location and tracking system including a network having a plurality of APs is provided. The simulator has one or more computing devices and a set of storage devices coupled to the computing devices. The storage devices include various parameters including area data, AP data and wireless device data. The locale simulator also has a simulation module, hosted on the computing device, and configured to generate a digital area model and determine placement of the APs within the digital area model as a function of the AP data and the wireless device data.

USING TWO CLASSES OF CHANNELS WITH DIFFERENT CAPACITY

A method and apparatus for transmitting and receiving signals in a base station with an antenna array in a cellular communication system. The available communication channels are divided into a plurality of classes. The base station transmits signals to the mobile station in a first class of channels in a wide antenna lobe. The position of a mobile station can then be determined from signals received at the base station from the mobile station. After the position of the mobile station has been determined, the base station can transmit signals to and receive signals from the mobile station is a second class channel with a narrow antenna lobe.

Method and system for processing prediction orbit of navigation satellite

High precision navigational satellite ephemeris fitting technology

The present invention provide two high precision almanac fitting algorithms and corresponding user secondary planet location calculating method to resolve the problems of bad precision, large mount of calculation, non-convergence iterative calculation or slow convergence speed of iterative calculation residing in present navigation secondary planet almanac fitting algorithm, combined with earth gravity field J2 analytical solution. Wherein, 1) 8 parameters almanac fitting algorithm whose fitting parameters are less than common method, but the almanac fitting precision is high, calculation amount is small and iterative calculation convergence speed is rapid; 2) new 9 parameters fitting algorithms based on 8 parameters algorithms is provided, under the conditions of having identical numbers of parameters as common methods, fitting secondary tracks in 14 days, can ensure URE almanac fitting precision of all kinds of MEO navigation secondary planets below 1 kilometer. The capabilities of the ...

GNSS measurement control network precision estimation method

A satellite navigation message demodulation method and the corresponding chips, terminal

Method for monitoring space gradient of GBBAS ionosphere based on pseudo satellite

A receiving device for accelerating the GNSS positioning time for the first time method and system

Initial method and device of bus system

Method, system and MSC server and HLR of processing calling service

Beidou satellite-based method of fitting a multi-channel time service

METHODS AND APPARATUS FOR IDENTIFYING ASSET LOCATION IN COMMUNICATION NETWORKS

METHOD AND APPARATUS FOR COMPUTING SIGNAL CORRELATION

지피에스 위성신호 정밀 수신에 의한 측지측량계획 시스템

... 본 발명은 동일시간 대에 다수의 GPS 수신기가 다수의 지피에스 인공위성으로부터 지피에스 신호를 최소수신시간 동안 수신하고 수신된 결과를 통합 처리하여 각 지피에스수신기가 위치한 기준점과 이동점 사이의 상대거리를 정밀하게 연산하는 정적측위 시스템의 정밀도 향상을 위하여 각 지피에스수신기가 지형이 열악한 주변환경 조건에서도 지피에스 위성신호를 정확하게 수신하여 측지측량 데이터의 정밀도와 신뢰도를 높이는 지피에스 위성신호 정밀 수신에 의한 측지측량계획 시스템에 관한 것으로 동일시간 대에 다수의 지피에스 위성으로부터 수신하는 위성 신호의 적정 수신 시간을 계산하며, 측량의 기준이 되는 기준 GPS 수신기 및 대상지점을 이동하면서 관측하는 이동 GPS 수신기를 이용하여 GPS 위성으로부터 위성신호를 수신하는 수신부; 지형의 기복, 주요 건물과 시설물들의 기복 및 3차원 공간상에서의 위치를 수치화한 3차원 지리정보데이터와 GPS 위성의 위치변화를 추적하는데 이용되는 GPS 위성 궤도 데이터를 이용하여 동시관측이 가능한 위성 자료를 분석하는 제어부; 및 GPS 기준점, 대상지점 및 기준 GPS 수신기를 설치할 수 있는 국가 기준점 또는 도시기준점 정보를 입력하고, 제어부에서 계산한 각 대상지점의 안정적인 데이터 수신 정보를 출력할 수 있는 입·출력부를 포함하고, 제어부는 Almanac 데이터를 통해 지구중심 기준좌표계에 준거한 좌표로 변환하는 좌표변환 모듈을 더 포함하고, 기준점과 관측 대상 미지점 사이의 정확한 상대거리를 측정하기 위해 세워진 서로 다른 두 지점의 수신기에서 동일 시간대에 4대 이상의 동일한 위성들에서 발신한 전파를 소정 시간 이상 수신해야하는 지피에스 위성신호 정밀 수신에 의한 측지측량계획 시스템에 있어서, 기준 GPS 수신기와 이동 GPS 수신기는 원통형상을 하며 무게 중심이 아래 부분에 형성되고 비어 있는 원통부의 내부에 지피에스회로부를 구비하며, 원통부의 상측 평면에 지피에스 안테나를 설치한 회로상자부; 회로상자부의 상부 측면 일부에 회동 설치되어 ...

APPARATUS AND METHOD FOR SPOOFING UNMANNED MOVING OBJECT USING GLOBAL NAVIGATION SATELLITE SYSTEM

SATELLITE SIGNAL RECEIVER AND METHOD FOR UPDATING EPHEMERIS INFORMATION THEREBY

ALMANAC MAINTENANCE FOR MOBILE STATION POSITIONING

Method and equipment to improve the sensitivity of a receiver of global positioning system (gps).

Television apparatus

Disclosed herein is a television apparatus including: a thin display device; a mount section to be placed in a site; a support mechanism projecting upwardly from the mount section and supporting the display device in an upper portion spaced from the mount section in a manner to allow the display device to change an attitude thereof; a first speaker mounted on the display device; a second speaker mounted on the mount section; a signal supply section configured to supply a first audio signal to the first speaker and to supply a second audio signal to the second speaker; and a signal processor configured to adjust the time difference between the timing of the first audio signal output from the signal supply section and the timing of the second audio signal output from the signal supply section.

System and method for an ultra wideband radio wireless local area network

A virtual wireless local area network system and method utilizing impulse radio wherein transmission rates (bit rates) can vary according to the impulse radio transmission quality (signal to noise ratio) and wherein the position of the user can be determined and said user can be directed to an area of greater transmission rates and wherein a plurality of impulse radio portals can be utilized and switched between to maintain high levels of transmission rates while a user is moving within a predetermined area.

Power based locator system

A network cellular communication system with power based locator system in which the location of a mobile communication unit within the network can be determined approximately. In particular, the power based locator system includes a pre-stored map of locations of a plurality of base stations within the network and the respective network cell coverage areas for those base stations. Each of the plurality of base stations is able to change the size of its respective cell by varying transmitter and receiver power levels. By incrementally changing its respective cell coverage area, the base station can effectively narrow down the region in which a mobile communication unit is located. The region information is correlated with the pre-stored map of locations to determine approximately where in the cellular communication network the mobile communication unit is located. Additionally, the present invention affords for substantially continuous connectivity of most or all mobile communication units ...

Position ambiguity resolution

A radio telecommunications system includes a number of locator satellites in low earth orbits. Locatable subscriber units communicate with the satellites. A single subscriber unit communicates with a single satellite using electromagnetic signals so that a measurement processor can obtain Doppler component, propagation duration, and real time measurements of the signals. A location processor converts these measurements into a two-position location solution. The two-position solution includes an actual position and an image position. The actual position may be detected in some situations by identifying a cell within which communications take place. In other situations, the actual position may be distinguished from the image position by detecting the eastward rotation of the earth. A service processor determines which qualifications to apply to communication services offered by the system. These qualifications are based on the subscriber unit's location.

AUTOMATIC SATELLITE TELEMETRY, TRACKING AND COMMAND SYSTEM

The invention concerns a satellite telemetry, tracking and command system including ground stations, on-board units and a network control center. Each on-board unit is installed on board a respective satellite and is configured to compute a future orbital path of the satellite and determine when said respective satellite is within the visibility region of one of the ground stations on the basis of the satellite's positions and velocities computed and of the stored coverage data. When said respective satellite is within the visibility region of a ground station, the on-board unit may transmit to said ground station the downlink signals and receive therefrom the uplink signals; and carry out actions/operations corresponding to the commands received from the ground stations. The ground stations may be networked together and may send and receive information to and from the network control center.

System and method for a virtual wireless local area network

A virtual wireless local area network system and method utilizing impulse radio wherein transmission rates (bit rates) can vary according to the impulse radio transmission quality (signal to noise ratio) and wherein the position of the user can be determined and said user can be directed to an area of greater transmission rates and wherein a plurality of impulse radio portals can be utilized and switched between to maintain high levels of transmission rates while a user is moving within a predetermined area.

Peer to peer information exchange for mobile communications devices

The invention discloses various methods whereby mobile communications devices, connected to a communications network can share data by acting as both clients and servers. Specifically contemplated is the sharing of GPS assistance data. Also disclosed is the formation and use of hierarchical groups of mobile communications devices for the purpose of information sharing.

Portable biometric monitoring devices having location sensors

Assisted-GPS for a portable biometric monitoring device is provided. The portable biometric monitoring device may obtain updated ephemeris data from an associated secondary device via a short-range, low-power communication protocol. The secondary device may be a computing device such as a smartphone, tablet, or laptop. Various rules may control when the ephemeris data is updated. The ephemeris data may be used in the calculation of the global position of the portable biometric monitoring device. Additionally, the portable biometric monitoring device may communicate downloaded position fixing data to the associated secondary device. The associated secondary device may then calculate the global position from the position fixing data.

Autonomous projection of global navigation satellite orbits

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

METHOD AND APPARATUS FOR MAINTAINING INTEGRITY OF LONG-TERM ORBITS IN A REMOTE RECEIVER

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.

DISTRIBUTED ORBIT MODELING AND PROPAGATION METHOD FOR A PREDICTED AND REAL-TIME ASSISTED GPS SYSTEM

A mobile device includes a processor for generating a predicted orbital state vector using an initial satellite position and velocity and force model parameters received from a server, the predicted orbital state vector being used to generate satellite navigation data; and a GNSS receiver in communication with the processor for receiving the satellite navigation data; wherein the satellite navigation data is valid for a time period.

POSITION ESTIMATION ASSISTANCE INFORMATION FOR MOBILE STATION

ДИНАМИЧЕСКАЯ ОБРАБОТКА ЗАПРОСА ПОЗИЦИИ ИЗМЕРЕНИЯ В МОБИЛЬНОЙ РАДИОСЕТИ

Изобретение в целом относится к системам связи и, более конкретно, к улучшению определения местоположения, используя глобальную спутниковую навигационную систему. Технический результат заключается в обеспечении повышения точности, в то же время не влияя на скорость захвата или конечное время захвата при получении привязки позиции мобильной станции. Для этого способ оценки местоположения мобильной станции в беспроводной сети, выполняемый в мобильной станции, содержит этапы: инициирование подсистемы определения местоположения в ответ на запускающее событие; прием сообщения запроса измерения позиции, содержащего точность сети и время ответа сети, при этом сообщение запроса измерения позиции принимают вслед за инициированием подсистемы определения местоположения; определение оценки местоположения мобильной станции с помощью подсистемы определения местоположения; формирование сообщения ответа измерения позиции в ответ на сообщение запроса измерения позиции, причем сообщение ответа содержит оценку ...

СПОСОБ И СИСТЕМА ДЛЯ ПЕРЕДАЧИ IP-ПАКЕТОВ ПУТЕМ ОБЪЕДИНЕНИЯ НЕСКОЛЬКИХ КАНАЛОВ РАДИОСВЯЗИ ДЛЯ ВЫСОКОСКОРОСТНОЙ ПЕРЕДАЧИ ДАННЫХ

... 1. Способ объединения нескольких каналов связи с многостанционным доступом с кодовым разделением каналов (CDMA), содержащий следующие этапы: (a) принимают по меньшей мере один пакет данных, определенный в межсетевом протоколе (IP-пакет данных); (b) фрагментируют IP-пакет данных на совокупность фрагментов пакета, более мелких, чем IP-пакет данных; (c) добавляют идентификатор (ID) фрагмента и идентификатор (ID) порядкового номера пакета в каждый фрагмент пакета; (d) добавляют IP-заголовок в каждый фрагмент пакета, при этом IP-заголовок содержит IP-адрес; и (e) осуществляют радиопередачу совокупности фрагментов пакета по нескольким одновременно действующим каналам связи CDMA. 2. Способ по п.1, по которому этап (a) заключается в том, что принимают совокупность IP-пакетов данных в заданном порядке следования, при этом способ дополнительно содержит следующий этап: (f) выполняют этапы (b)–(e) для каждого IP-пакета данных, чтобы каждый переданный фрагмент пакета содержал идентификатор (ID) порядкового ...

VERFAHREN UND VORRICHTUNG ZUR VERARBEITUNG VON SATELLITENSIGNALEN OHNE TAGESZEITINFORMATIONEN

Zeitmesseinrichtung und Satellitensignalempfangsverfahren für eine Zeitmesseinrichtung

Verfahren und Vorrichtung bei der Positionsbestimmung ohne Ephemeridenaussendung

Verfahren zum Bestimmen einer Position eines Satellitennavigationsempfängers, mit Empfangen (306) von Satelliteninformation von einer Ferndatenbank (206) durch einen in dem Satellitennavigationsempfänger enthaltenen Datenempfänger; Lösen (305) einer mathematischen Integration, die eine Satellitenerdumlaufbahn modelliert, unter Verwendung der empfangenen Satelliteninformation durch eine in dem Satellitennavigationsempfänger enthaltene Erdumlaufbahnberechnungsmaschine (214); Berechnen einer Position eines Satelliten (202) basierend auf der Integration durch die Erdumlaufbahnberechnungsmaschine; und Bestimmen (308) der Empfängerposition unter Verwendung der berechneten Position des Satelliten, indem ein in dem Satellitennavigationsempfänger enthaltenes Positionsbestimmungsmodul (217) verwendet wird.

Method of saving power by reducing active reception time in standby mode

Multi-functional mobile applicance

Supporting an estimation of satellite locations

A method of modelling the position of satellites comprising steps of: computing a first and second plurality of locations of a satellite for a plurality of points in time based on first and second set of parameter values of an orbit model, that were broadcast by the satellite, for a first and second validity period; wherein for computing the first and second plurality of locations the first or second validity period is extended by an equation of motion for the satellite; computing an error component of each of the plurality of locations by comparing the first plurality of locations with the second plurality of locations of the satellite; fitting parameter values of a model having at least one periodic component to the error components of each location; providing a model of the time evolution of the values of the error as a basis for correction of the location of the satellite that are computed outside the validity period. The parameter values may be ephemeris data. The quality of the obtained ...

Method and apparatus for assisted gps protocol

POSITIONING SYSTEM ON DISTANCE

PROCEDURE AND MECHANISM FOR THE CHANGE OF THE OPERATING MODE OF AN AGENT OF A MANAGEMENT NET

ENERGY CONSERVATION AND TREATMENT OF ROUND SAYING MESSAGES SUCH AS SINGLE MESSAGES IN A WLAN

PROCEDURE FOR THE GPS POSITION STATEMENT AND THE PERTINENT DEVICE

PROCEDURE FOR MAKING AVAILABLE AUXILIARY DATA FOR A MOBILE STATION OF A SATELLITE POSITIONING SYSTEM

PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF A GLOBAL NAVIGATION SYSTEM WITH A TERRAIN MODEL

POSITIONING WITHOUT USE OF RADIATED EPHEMERIS INFORMATION

PROCEDURE AND DEVICE FOR GPS SUPPORT IN A COMMUNICATION SYSTEM

SYSTEM AND PROCEDURE FOR THE PRODUCTION OF DETAILS OF TOPOGRAPHIC MAPS WITH DGPS

METHODS AND DEVICES FOR THE DETERMINATION OF THE PLACE OF RESIDENCE OF AN ARTICLE IN MOBILE COMMUNICATIONS NETWORKS

ENERGY CONSERVATION BY VARIABLE HEARING TIME IN A WLAN

METHOD AND SYSTEM FOR DETERMINING TIME IN A SATELLITE POSITIONING SYSTEM

System and method for creating accurate topographical maps using DGPS

Integrated vehicle positioning and navigation system, apparatus and method

Method and apparatus for GPS assistance in a communication system

Method for improving signal acquisition in a global positioning system receiver

GPS RECEIVER

Method and apparatus for determining time for gps receivers

GPS PRE-ACQUISITION FOR GEOTAGGING DIGITAL PHOTOS

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.

METHOD AND APPARATUS FOR POSITION DETERMINATION WITH EXTENDED SPS ORBIT INFORMATION

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.

SYSTEM AND METHOD FOR GNSS POSITION AIDED SIGNAL ACQUISITION

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

INTEGRATED VEHICLE POSITIONING AND NAVIGATION SYSTEM, APPARATUS AND METHOD

... 2071831 9109275 PCTABS00005 Systems and methods for positioning and navigating an autonomous vehicle (102, 310) allow the vehicle (102, 310) to travel between locations. A first position estimate (112) of the vehicle (102, 310) is derived from satellites (132-170, 200-206) of a global positioning system (100A) and/or a pseudolite(s) (105). The pseudolite(s) (105) may be used exclusively when the satellites (132-170, 200-206) are not in view of the vehicle (102, 310). A second position estimate (114) is derived from an inertial reference unit (904) and/or a vehicle odometer (902). The first and second position estimates are combined and filtered to derive a third position estimate (118). Navigation of the vehicle (102, 310) is obtained using the position information (414), obstacle detection and avoidance data (416), and on board vehicle data (908, 910).

METHOD OF IMPROVING THE SENSITIVITY OF RECEIVERS OF THE GLOBAL POSITIONING SYSTEM (VARIANTS) AND THE DEVICE FOR THE REALIZATION OF THE METHOD (VARIANTS)

Indoor pseudolite ephemeris updating method based on CS (Client/Server) framework

Agps system and method for determining the location of a terminal

Determining time in a GPS receiver

System and method to obtain signal acquisition assistance data

Signal acquisition assistance data is obtained for receiving devices such as wireless position assisted location devices seeking signals from any source, such as satellite vehicles and base stations. The data may be obtained from previously acquired data, based upon evaluation of changes in parameters such as time and location that may jeopardize validity. In some cases the data may be adjusted for the changes in parameters. Refined data may be calculated by a receiver using partial measurements of signal sets, particularly if the acquisition assistance data provided by a remote entity includes more distinct parameters than have typically been provided.; New data need not be obtained until the validity of previous data expires due to limitations upon temporal extrapolation using Doppler coefficients, unless mobile station movement that cannot be compensated is detected, and jeopardizes validity of the previous data.

Biological identifying method for resisting replay attach

Satellite navigation signal simulator

Radio clock

PROCESS, FITTING, DEVICES FOR the CATCH Of a LINE TELEPHONIQUEPARTAGEE

RADIO SIGNAL GNSS IMPROVED NAVIGATION MESSAGE

Computer-readable medium, mobile device, remote station apparatus, almanac data management system and method for managing almanac information

DIGITAL TELEVISION TRANSMITTER AND RECEIVER FOR TRANSMITTING AND RECEIVING DUAL STREAM USING 4 LEVEL VESTIGIAL SIDE BAND ROBUST DATA

METHOD, APPARATUS, AND SYSTEM FOR GPS SIGNAL PREDICTION

SUPPORTING AN EXTENDED USE OF ASSISTANCE DATA FOR GALILEO

A system with at least one device obtains assistance data for Galileo for a current time from at least one terrestrial apparatus. The system predicts assistance data for Galileo for a plurality of subsequent time instants based on the obtained assistance data for Galileo and associates for each subsequent time instant a separate message authentication code with the predicted assistance data. The system causes transmission of information comprising at least the predicted assistance data for Galileo and the associated message authentication codes to a satellite signal receiver.