Method for the localizing of terrestrial mobile radio from an aircraft
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 30, 2004
Grant Date -
N/A
app pub date -
Feb 23, 2000
filing date -
Feb 23, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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 .DELTA. and an azimuth angle .theta. 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.
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