Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (1): 1-10.doi: 10.3969/j.issn.1001-506X.2021.01.01

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Study on generating method of interrupted non-uniform sampling repeater jamming

Chuanzhang WU(), Baixiao CHEN()   

  1. National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China
  • Received:2020-07-05 Online:2020-12-25 Published:2020-12-30

Abstract:

The interrupted sampling repeater jamming (ISRJ) can generate coherent spurious target groups after matching filter at the receiving end, while these false targets always show strong regularity in range and amplitude. To solve this problem, based on the pulse compression result of the each sampled sub-waveform, the way of interrupted non-uniform sampling and non-quantitative forwarding is used to break the regularity after pulse compression and makes it form a suppressive effect over a large distance, and the pulse width and the repeater number of each jamming sampling signal is optimized and solved using the algorithm of tabu search. The simulation experiments analyze the impact of different signal parameters and different weight pair in the tabu search algorithm on interference effect, and compare the traditional method with the proposed method from three aspects, the average power before and after pulse compression, the probability of over threshold in pulse compression result, the cycle correlation coefficient of jamming signal and target signal before and after pulse compression, which verifies the effectiveness of the proposed method.

Key words: interrupted sampling repeater jamming (ISRJ), interrupted non-uniform sampling, suppressive jamming, jamming generation, tabu search

CLC Number: 

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