Method and device to detect the garbling of pulses received by a secondary radar by phase analysis

摘要

Disclosed are a method and a device to detect the intermingling, hence the garbling, of pulses received by a secondary radar by phase analysis. The monopulse reception antenna of a secondary radar delivering a sum signal given by its sum channel and a difference signal given by its difference channel, the method according to the invention consists in analyzing the phase difference between the sum signal and the difference signal, the garbling of at least two received pulses being detected by a phase difference with a value that is substantially different from 0. degree. or 180°. Application to the detection of garbled pulses received when the working frequencies of the transponders are very close to one another.