Interrupted Sampling Repeater Jamming Suppression Method based on Hybrid Modulated Radar Signal
2019 IEEE International Conference on Signal, Information and Data Processing (ICSIDP)(2019)
摘要
By repeatedly intercepting and transmitting radar signals, an interrupted sampling repeater jamming (ISRJ) can form a large number of false targets, posing a great threat to modern radar systems. Aiming at the interrupted sampling processes of ISRJ, an FSK/PSK hybrid modulated signal based jamming detection and suppression method is proposed in this paper. Firstly, the sub-pulse compression method is introduced and the jamming effect with different parameters is qualitatively analyzed. Then, on the premise that only part of the sub-pulses are intercepted, the difference of sub-pulse compression results between target echo and ISRJ signal is deduced. On this basis, the M/N decision is introduced to detect and suppress the jamming. Finally, the effectiveness of the method is verified with simulation.
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关键词
ISRJ,hybrid modulated signal,jamming suppression,M/N decision
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