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

Claim 9:
10. A method for aerial surveillance using an active bi-static or multi-static radar system, the radar system including at least one transmitter device on board a satellite orbiting the Earth and at least one receiver device, the at least one transmitter device being configured to cooperate with the at least one receiver device, wherein the radar system is a backward-scattering bistatic radar system, wherein the at least one receiver device is carried on mobile platforms, wherein method includes:
determining a region of interest in which it is desired to detect and geolocate an aircraft,
positioning the at least one receiver device to monitor the region of interest,
communicating to the at least one transmitter device information relating to the region of interest,
transmitting, by the at least one transmitter device a signal in a radio beam illuminating at least a portion of the region of interest,
estimating the position of the aircraft in the region of interest based on a signal received by the at least one receiver device, wherein the received signal corresponds to the reflection on the aircraft of the signal transmitted by the at least one transmitter device.