基于调频斜率变化的ISAR成像干扰方法研究

doi:10.12305/j.issn.1001-506X.2024.11.12

Abstract

Abstract:

In order to resist the advanced system inverse synthetic aperture radar (ISAR), an ISAR imaging jamming method based on frequency modulation slope change is proposed. Firstly, the influence of frequency modulation slope change on ISAR imaging is exploited, according to the wideband linear frequency modulation (LFM) signal model and processing flow of dechirping signal, revealing the basic mechanism by which its variation characteristic can be used for jamming. Then, the ISAR jamming signals with pseudo-random change of frequency modulation slope are formed and mixed with radar echo signals into radar, via using the pseudo-random change of the LFM signal bandwidth and pulse width in a certain range. Finally, the influence of frequency modulation slope change and the effectiveness of the proposed jamming method in ISAR imaging jamming are verified by simulation experiments.

Key words: frequency modulation slope, inverse synthetic aperture radar (ISAR) jamming, imaging jamming

CLC Number:

TN974

Xiaoyi PAN, Quan WANG, Zhaoyu GU, Jiyuan CHEN, Xiaoming MENG. ISAR imaging jamming method research based on frequency modulation slope change[J]. Systems Engineering and Electronics, 2024, 46(11): 3703-3714.

Figures/Tables 17

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ISAR imaging jamming method research based on frequency modulation slope change

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