The Study Of Correlative Radar Signal Processing And Correlative Jamming

The appearance of correlative radars makes the jamming ability of traditional jamming techniques worse. So the direction of jamming study has been changed and turns to the correlative study. Firstly the signal processing is discussed in correlative radars such as PD radar and SAR. They can restrain jamming signals and clutters which are irrelative with the radar echoes. By the simulation targets' images can be got. Then the irrelative jamming and the correlative jamming models are built up. The noise-modulated jamming belongs to irrelative jamming while correlative jamming includes suppressive jamming produced by frequency-shift, phrase-shift and fraudulent jamming produced by time-shift and DRFM. These jamming techniques are simulated .compared and the analysis of their jamming effects is made. As the result of the processing of matching filtering in range and cross-range and the less relationship between noise jamming signals and echoes the energy of jamming is dispersed. But correlate jamming is to modulate the radar's transmitting signals and can make good use of the jamming energy. At last it is summarized that the ways to evaluate jamming are often used and a few evaluating rules aiming at SAR are put forward.