Amplitude and Phase Modulated Interrupted Sampling Repeater Jamming Method

When traditional interrupted sampling repeater jamming (ISRJ) interferes with linear frequency modulation (LFM) pulse compression (PC) radar, there are problems such as uniform distribution of false targets in the distance dimension, easy removal by the radar, rapid power attenuation of leading and lagging false target groups, and poor interference effect. Propose an amplitude-phase modulation ISRJ interference suppression technique. Firstly, the signal characteristics of ISRJ were analyzed, and based on this, a theoretical model for adding amplitude-phase modulation to ISRJ was proposed, as well as the specific forms of amplitude modulation function and phase modulation function. Finally, the interference effectiveness of the proposed method was verified through simulation experiments, and the results showed that the amplitude-phase modulation ISRJ can produce a " surface" suppression interference effect in the range doppler plane, effectively reducing the radar's detection performance of targets.