초록 ▼

The disclosure relates to methods and devices for the real-time localization of terrestrial transmitters belonging to a TDMA type cellular radiocommunications network. The device comprises an antenna array, a multichannel receiver and a digital processor. The method consists of the interception, fro

The disclosure relates to methods and devices for the real-time localization of terrestrial transmitters belonging to a TDMA type cellular radiocommunications network. The device comprises an antenna array, a multichannel receiver and a digital processor. The method consists of the interception, from an aircraft, of radioelectric signal and the detection of these signal by the implementation of a multichannel synchronization to determine the various sources of transmission, the simultaneous computation of an elevation angle Δ and an azimuth angle θ to instantaneously determine the direction of arrival of the radioelectric signal from the determined transmission sources and the building of track in the geographical areas in which the transmission sources are located in order to estimate the position of the transmitters.

대표청구항 ▼

The disclosure relates to methods and devices for the real-time localization of terrestrial transmitters belonging to a TDMA type cellular radiocommunications network. The device comprises an antenna array, a multichannel receiver and a digital processor. The method consists of the interception, fro

The disclosure relates to methods and devices for the real-time localization of terrestrial transmitters belonging to a TDMA type cellular radiocommunications network. The device comprises an antenna array, a multichannel receiver and a digital processor. The method consists of the interception, from an aircraft, of radioelectric signal and the detection of these signal by the implementation of a multichannel synchronization to determine the various sources of transmission, the simultaneous computation of an elevation angle Δ and an azimuth angle θ to instantaneously determine the direction of arrival of the radioelectric signal from the determined transmission sources and the building of track in the geographical areas in which the transmission sources are located in order to estimate the position of the transmitters. in response to the authorization; providing the current context result to the application program in response to the authorization; and receiving the information from the application program. 8. The apparatus of claim 7, wherein the processing of the sensor signals with a context inference engine is embodied as programmed instructions executed within the user's wireless device to offload computationally intensive load from the wireless device to the server. 9. The apparatus of claim 7, which further comprises: a second context inference engine in a separate network server processing the sensor signals in response to signals from the user's wireless device to offload computationally intensive load from the wireless device to the server. 10. The apparatus of claim 9, wherein the server accesses files from a web server, for selective forwarding to the user's wireless device. 11. A wireless device to provide information to its user that is related to the device's current environment, comprising: a first environmental sensor and a second environmental sensor for providing first environmental signals and second environmental signals characterizing a current environment of the wireless device; logic to combine the first environmental signals and the second environmental signals into composite sensor signals; a context inference engine in the wireless device, coupled to the sensors, for processing the composite sensor signals; said context inference engine providing a current context result from the processing; an output device coupled to the context inference engine for outputting a current context from the processing by the context inference engine; authorization control for appending to application program, to access the current context results; said access control automatically granting access permission to the application program to access the current context result, logic for providing the current context result to the application program in response to the authorization; and logic for receiving the information from the application program. 12. A wireless device to provide information to its user that is related to the device's current environment, comprising: a privacy control for providing the user control of access by an application program including an appended authorization code to the user's private data; a sensor for providing composite sensor signals characterizing a current environment of the wireless device; a context inference engine in the wireless device, coupled to the sensor, for processing the sensor signals; said context inference engine coupled to the privacy control, for providing a current context result from the processing to the application program if authorized by the authorization code appended to the application; and an output device coupled to the privacy control, for providing information to the user in response to the application program. 13. A system to provide information to the user of a wireless device that is related to the device's current environment, comprising: a privacy control in a server for receiving a user privacy profile from the wireless device and providing the user control of access security to the user's private data by an application including an appended authorization code; a privacy control in a server for receiving a user privacy profile from the wireless device and providing the user control of access security to the user's private data by an application program including an appended authorization code a sensor in the wireless device for providing composite sensor signals characterizing a current environment of the wireless device; a context inference engine in the server coupled to the wireless device, for processing sensor information derived from the sensor signals; said context inference engine coupled to the privacy control, for providing a current context result from the processing to the application program if authorized by the auth