5124 results about "Satellite positioning" patented technology

A method and apparatus for providing assistance data for satellite positioning system receivers utilizing a secure user plane location (SUPL) service. In one embodiment, the assistance data is supplied by a global secure user plane location center that contains global assistance data.

Methods and apparatuses for synchronizing basestations in a cellular network. One exemplary method performs time synchronization between at least two basestations, a first basestation and a second basestation, of a cellular communication system. In this exemplary method, a first time-of-day and a first geographical location of a first mobile cellular receiver station (MS) are determined from a first satellite positioning system (SPS) receiver which is co-located with the first MS, and the first time-of-day and first location are transmitted by the first MS to a first basestation which determines a time-of-day of the first basestation from the first time-of-day and first location and from a known location of the first basestation. Also in this exemplary method, a second time-of-day and a second geographical location of a second MS are determined from a second SPS receiver which is co-located with the second MS, and the second time-of-day and the second location are transmitted to a second basestation which determines a time-of-day of the second basestation from the second time-of-day and the second location and a known location of the second basestation. Other methods and apparatuses are also described for synchronizing basestations in a cellular network.

A navigation information system includes a communications system having a fixed part and at least one mobile part, the fixed part including data storage and processing for identifying the location of a mobile unit, generating guidance information appropriate to that location and transmitting it to the mobile unit. By locating most of the complexity with the service provider, in particular the navigation computer and geographical database, the system can be readily updated and the capital cost of the in-vehicle system, which in its simplest form may be a standard cellular telephone, can be minimized. The user makes a request for guidance information, and the system, having determined the user's present location, then transmits instructions to the user. The user's present location can be determined by a Satellite Positioning System.

A signal processing system for processing satellite positioning signals is described. The system comprises at least one processor and a signal processor operating under a number of operational modes. The signal processor includes at last one of a signal processing subsystem, a fast Fourier transform (FFT) subsystem, and a memory subsystem that are each dynamically and independently configurable in response to the operational modes. Further, the system includes a controller that couples to control transfer of data among the signal processing subsystem and the FFT subsystem via the memory subsystem. Configurability of the memory subsystem includes configuring the memory subsystem into regions according to the operational modes where each region is accessible in one of a number of manners according to the operational modes.

A tamper-resistant apparatus located on board of an aircraft for avoiding a restricted air space (RAS) comprising: (a) a tamper-resistant restricted air space (TAP-RAS) database configured to include a set of coordinates that determines the RAS; and (b) a navigational processor configured to navigate the aircraft around the RAS, if a valid overriding command is not generated. The navigational processor includes: a Satellite Positioning System (SATPS) configured to substantially continuously obtain a set of real time position coordinates of the aircraft; a restricted airspace controller configured to receive a set of real time data including the set of coordinates that determines the RAS, the set of real time position coordinates; and configured to analyze the set of real time data in order to substantially continuously generate a set of real time commands; and an aircraft controller configured to navigate the aircraft utilizing the real time set of commands around the RAS. The navigational processor is configured to navigate the aircraft in an overriding mode, if the valid overriding command is generated.

A system and method for determining the location of a re-deployable base station is disclosed. The disclosed system and method allow for accurate determination of the location of a re-deployable base station, such as a femto base station (FBS), using position information obtained from a mobile station (MS) that is communicating with the FBS being located. The position information can include the location of the mobile device as estimated using one or more satellite positioning systems or cellular network based positioning systems. The position information can also include data identifying pilots from base stations and/or other FBS's that the MS is receiving. A determination of the propagation loss between the MS and the FBS is used to estimate the distance between the mobile device and the FBS. The location of the FBS is determined based on the received position information and the determined distance between the MS and the FBS.

The invention discloses an unmanned aerial vehicle obstacle avoidance controlling method. An unmanned aerial vehicle subsystem and a ground station subsystem are arranged, the unmanned aerial vehicle subsystem comprises an embedded flight controller and an airborne terminal of a wireless data chain, a satellite positioning receiver and a height sensor are arranged in the embedded flight controller, the ground subsystem comprises an embedded monitoring computer and a ground terminal of the wireless data chain, and an electronic map containing geographic information of obstacles is arranged in the embedded monitoring computer. On the electronic map in the embedded monitoring computer of the ground station subsystem, the geographic information of the obstacles in a flight area is determined, virtual obstacle polygonal cylinders are established, shape data of the virtual obstacle polygonal cylinders are downloaded in the embedded flight controller which obtains the current position of the unmanned aerial vehicle and calculates space correlation between the unmanned aerial vehicle and the obstacle polygonal cylinders, track-shifting instruction of the unmanned aerial vehicle is generated, and automatic obstacle avoidance of the unmanned aerial vehicle is realized.

A position location system, apparatus, and method are disclosed. A wireless device includes a satellite positioning system (SPS) receiver and position location processor. The SPS receiver detects the availability of positioning signals and the position location processor determines an initial position of the wireless device based upon the positioning signals. A controller generates power saving events when the positioning signals are detected as being available. The controller determines the timing and duration of the power saving events. During a power saving event, the SPS receiver is deactivated and/or processing of the positioning signals is suspended to reduce power consumption of the wireless device. The initial position is updated based upon relative positioning information from one or more sensors during the power saving event. The controller activates the SPS receiver and resumes processing of the positioning signals following the power saving event.

An aircraft monitoring system adapted for mounting in an aircraft and at a location independent of the aircraft for providing information related to aircraft location and/or the current state of the operation of the aircraft. The monitoring system includes an aircraft-tracking device and a server computer adapted for communicating with an aircraft owner/operator. The device includes a signal receiving antenna for receiving signals from a satellite positioning system and a decoder connected to the antenna for decoding the location position coordinates (GPS or GLONASS). Further, the aircraft-tracking device includes a microprocessor connected to the decoder and a two-way satellite communication transceiver. The transceiver is connected to a two-way radio communication antenna. The radio communication antenna receives and sends two-way satellite communications between a satellite communication system. The satellite communication system communicates with a ground-based satellite communication service. The server computer is connected to the satellite communication service and is connected to a telecommunication system for alerting the owner/operator as to the aircraft's location and/or the current state of operation.

A method and system for evaluating the validity of location fixes of a mobile station by comparison of a location fix for which a validity determination is desired with one or more prior reference location fixes. In one embodiment, a satellite positioning system based location fix of a satellite positioning system enabled cellular mobile station in a cellular communications network is validated by comparison of the satellite positioning system based location fix to one or more of a plurality of network based location fixes, or to an estimated future location fix of the mobile station.

A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor accumulates samples of a SATPS signal that are identically positioned within corresponding PRN code repetition periods, and plays back the stored accumulated values of the samples in an integration period to a correlation section for correlation with a locally generated PRN code.