摘要:
A self-contained device and method provides that a first body or unit is held in, mounted on or otherwise place in a predetermined position relative to an orientation transfer device that determines its orientation and/or position. The orientation transfer device is mounted to, held in or by or otherwise placed in a predetermined position relative to a second body or unit and the second unit is moved to a position and/or orientation that is the same as that of the first body, or difference in position and/or orientation of the second body relative to the first body is determined, thereby establishing the orientation of the second body.
摘要:
The method of the invention, which is applicable, in particular, to making positioning signals from GPS and SBAS satellites reliable, consists in performing an instantaneous statistical analysis (of around 1 mn duration) of the correlation peak from the satellite signal receiver and in comparing it to a long-term (several hours) statistical analysis by choosing 5 points which are characteristic of the peak (prompt, null0.044 and null0.088). If the result of the comparison exceeds a given threshold, the corresponding signals are rejected.
摘要:
Provided is a method for providing location information in a mobile communication system. The method includes the steps of: a) receiving coordinates of current location of a GPS terminal and a request for location information which includes coordinates of geographical features adjacent to the GPS terminal from the GPS terminal; b) generating location information having coordinates of the geographical features adjacent to the GPS terminal; and c) transmitting the location information to the GPS terminal.
摘要:
Described herein is a system and method for detecting the position of a remote emitter (1) where the emitter (1) is emitting a radio frequency signal (2) in a radio field (3). The system and method uses at least one receiver (4) which is moveable within the environment of the radio field (3), each receiver (4) measuring and recording the amplitude of the radio frequency signal (2) and recording its precise location using a GNSS or GPS receiver. The data recorded is processed and compared to data predicted by the receiver (s) (4) to estimate a location of remote emitter (1).
摘要:
A system is described that utilizes an imager in a wireless device (102) in a wireless network (100) and transmits a digital image to a service center (120) that assists in identifying the location of the wireless device (102) within a cell site (104).
摘要:
Methods and apparatuses to obtain an ordered set of satellite positioning system (SPS) satellites, in view of a mobile SPS receiver, via one or two-way communication with the mobile SPS receiver. The mobile SPS receiver receives, in one embodiment, an ordered set of SPS satellites from a cellular transmission site. The ordered set of satellites are those in view of the mobile SPS receiver at a given time; such that the mobile SPS receiver may search for the SPS satellites according to an order of the ordered set of SPS satellites. The order of the ordered set may be obtained by various methods one of which is by minimizing the geometric dilution of precision (GDOP) Satellite; health data may be included in the transmission.
摘要:
The present invention includes a communication device that transmits its location information to a second communication device. The second communication device then uses this information and its own location information to determine relative distance information between the two devices.
摘要:
A vehicle information system which includes an in-vehicle system 105 and a centralized server system 120. The in-vehicle system communicates with the server system using a wireless communication link 110, such as over a cellular telephone system. A position system, such as a set of GPS satellites 140, provides positioning signals that are used by the in-vehicle systems, and optionally by the centralized server system to increase the accuracy of position estimates. In one version of the system, an operator specifies a destination to an in-vehicle system which validates the destination. The in-vehicle system transmits specification of the destination to a server system 125 at the centralized server. The server system computes a route to the destination and transmits the computed route to the in-vehicle system. The in-vehicle system guides the operator along the route. If the in-vehicle system detects that the vehicle has deviated from the planned route, it replans a new route to the destination using an in-vehicle map database.
摘要:
A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power. The geographic position information may be communicated to a remote location either in response to a carrier activating a panic function or after receiving a request from a remote location which commences the transmission in response to the request. In a system-level configuration, the miniaturized module is used in conjunction with a portable locating unit operative to receive the geographic position information at the remote location and inform a user as to the location of the miniaturized module. Preferably the portable locating unit further includes a positioning satellite receiver of its own and a display, enabling the locating unit to visually indicate the location of the miniaturized module relative to that of the locating unit.
摘要:
The invention relates to a method and to devices for determining in a positioning system the time of reception of a beacon signal which was received and tracked by a receiver. In order to enable a re-acquisition of the system time based on a noisy received signal, it is proposed that the method comprises as a first step reconstructing a beacon signal for an interval based on available information. Then, a cross-correlation is performed between the reconstructed signal and the received signal at different relative positions to each other. Next, the time of transmission of the received signal is determined based on information for the reconstructed signal and on the relative position resulting in the maximum correlation value. Finally, a time of reception of said received signal is determined as the sum of the determined time of transmission of the received signal and of a calculated time of flight of the received signal.