Method for discrimination between jet liner and fighter aircraft, involves comparing rotation speed of engine with predetermined threshold speed, and declaring aircraft as fighter aircraft if rotation speed is not lower than threshold speed

摘要

The method involves determining rotation speed of a turbojet engine of an airplane from a signal received by a radar. The rotation speed is compared with a predetermined threshold speed that is equal to 100 revolutions per second. The aircraft is declared as a jet liner if the rotation speed is lower than the predetermined threshold speed. The aircraft is declared as a fighter aircraft if the rotation speed is not lower than the predetermined threshold speed.