地面对SAR发射干扰信号中的寄生调制

Spurious modulation of ground-to-SAR interference signal

对空间合成孔径成像雷达的电子干扰非常重要,具有很高的军事价值和战略意义。地面对SAR进行干扰是对SAR实施干扰的重要方式之一。地面干扰发射机和SAR之间的附加相对运动,产生了传输发射信号的寄生相位调制。研究了这种寄生调制产生的原因、数学模型以及补偿的技术。提出的论点皆得到了Matlab仿真的证实,对地面干扰系统设计有一定的参考价值。

Electronic jamming of space SAR is extremely important. It is of very high military value and strategic significance. Ground-to-SAR jamming is one of important methods for SAR jamming. Due to additive relative motion between ground jamming emitters and SAR, the spurious phase modulation of transmission signal is produced. The reasons for this spurious modulation, mathematical model and compensation method are studied. The proposed method is confirmed by Matlab simulations and is of reference value for ground jamming system design.