基于乘积调制的SAR灵巧干扰方法

doi:10.12305/j.issn.1001-506X.2021.11.15

Abstract

Abstract:

Noise multiplication modulation can not only obtain radar signal processing gain, but also aim at the frequency of radar signal automatically, which has been widely used in many important battlefield scenarios, such as target penetration. By applying its basic principle, a smart jamming method against synthetic aperture radar (SAR) is proposed, which is based on multiplication modulation. Without modifying the modulation procedures of intercepted signal, the proposed jamming method an produce suppression or deception jamming flexibly by the offline design of the modulation template. Firstly, the jamming signal model is established and its imaging result is deduced. Then, the generation method of modulation template is explained in detail. Finally, the jamming performance is analyzed theoretically. Simulation results demonstrate that only by the design of modulation template can the proposed jamming method achieve scenario suppression or false target deception. The jamming results have little dependence on reconnaissance precision. The modulation procedures are simple and effective, which is convenient for engineering practice.

Key words: synthetic aperture radar (SAR), multiplication modulation, two-dimensional filtering, frequency domain sampling, smart jamming

CLC Number:

TN95

Datong HUANG, Shiqi XING, Yongzhen LI, Yemin LIU, Shunping XIAO. Smart jamming method against SAR based on multiplication modulation[J]. Systems Engineering and Electronics, 2021, 43(11): 3160-3168.

Figures/Tables 9

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Table 1

References 29

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干扰参数		功率增益/dB
模板快时间单边带宽/MHz	模板慢时间单边带宽/Hz	理论值	实验值
18.9	283	5.740 3	5.564 9
14.1	188	8.768 1	8.701 5
10.4	112	12.346 8	12.257 2
2.4	94	19.573 0	19.386 3

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Smart jamming method against SAR based on multiplication modulation

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