Patent ID: 11955021
Assignee: BAE SYSTEMS PLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A non-transitory computer-readable medium encoded with instructions that when executed by one or more processors cause a process to be carried out for classifying aircraft behaviour, the process comprising:
receiving aircraft data from an aircraft which is to be classified;
determining whether the received aircraft data comprises identification information for the aircraft;
in response to a determination that the received aircraft data comprises identification information, using said identification information to classify the behaviour of the aircraft by
receiving radar data about the aircraft;
determining a cross-section value for the aircraft from the radar data;
comparing the determined cross-section value with an expected cross-section value for the type of aircraft; and
classifying the behaviour as suspicious in response to determining that the determined cross-section value and the expected cross-section value do not match; and

in response to a determination that the received aircraft data does not comprise any identification information, obtaining the position of the aircraft, comparing the obtained position to an expected route for the aircraft, and classifying the behaviour of the aircraft based on the comparison.