Multi-spot satellite surveillance system and reception device

摘要

A system for surveying aircraft present in an area covered by at least one communication satellite, the aircraft transmitting signals conveying surveillance messages. The coverage area consists of multiple spots, the satellite is configured to periodically apply a switching sequence, the sequence consisting of multiple switching phases, a switching phase corresponding to a duration during which the signals transmitted by the aircraft present in at least one spot are processed by the satellite in such a way as to detect surveillance messages, and the sequence is adapted to allow for the detection, during a predetermined period Tup, of at least one surveillance message by aircraft present in the coverage area.

主权项

1. A reception device that can be installed in a satellite, the device comprising:
means for forming a plurality of reception beams, a reception beam corresponding to a spot, all the spots forming a coverage area; at least one reception module comprising means for detecting surveillance messages from a reception beam; and means for periodically implementing a switching sequence adapted for switching at least one reception beam towards at least a reception module, said sequence being adapted to allow for the detection, during a predetermined period Tup, of at least one surveillance message by an aircraft present in the coverage area, said sequence being furthermore composed of a plurality of switching phases, a switching phase corresponding to a duration during which the signals transmitted by aircraft present in at least one spot are processed by the at least one reception module in such a way as to detect surveillance messages.