Patent ID: 11953579
Assignee: AIRBUS DEFENCE AND SPACE SAS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A transmitter device of an active bi-static or multi-static radar system for aerial surveillance, wherein the transmitter device is to be on board a satellite orbiting the Earth, the transmitter device is configured to cooperate with at least one receiver device, and when the transmitter device is on board the satellite in orbit, the transmitter device is configured to obtain information relating to a region of interest to be monitored by the at least one receiver device of the radar system and to transmit a signal in a radio beam illuminating at least a portion of the region of interest, wherein the transmitted signal is a combination of a useful signal with a parasitic signal, the parasitic signal being decorrelated from the useful signal and having an ambiguity function with a main lobe with a width in the frequency domain greater than twice the maximum Doppler frequency shift likely to be observed for a target aimed at by the radar system.