基于NSGA-Ⅱ的波前相位畸变特性分析

doi:10.12305/j.issn.1001-506X.2022.05.02

Abstract

Abstract:

The jamming method of multi-vector synthesis is recognized as one of the best means to combat tracking radar because it can cause wave-front phase distortion. However, most of the researches analyze the jamming performance of multi-vector from the radar side, so we need to know the radar angle measurement system in advance. From the point of view of the jammer, this paper establishes the jamming scene of multi-vector synthesis, deduces the expression of amplitude and phase of the synthesized signal, and analyses the waveform characteristics of multi-vector synthesis. The parameters such as amplitude gain, phase shift and number of elements are optimized by the NSGA-Ⅱ algorithm for the purpose of improving the two waveform characteristics of the degree of center distortion and the effective distortion region. The simulation results show that the wave-front phases are not the same for different numbers of elements. By increasing an appropriate number of elements, the degree of center distortion of synthetic waves can be effectively improved, and the jamming performance of the center point of the synthetic wave could be better, but the influence on the effective distortion region is small.

Key words: electronic warfare, deceptive jamming, NSGA-Ⅱ algorithm, wave-front phase, cross-eye jamming

CLC Number:

TN97

Jiabei CHEN, Qingping WANG, Yuan YE, Weiwei WU, Naichang YUAN. Analysis on wave-front phase distortion characteristics based on NSGA-Ⅱ[J]. Systems Engineering and Electronics, 2022, 44(5): 1439-1446.

Figures/Tables 8

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参数名称	参数值
雷达频率/GHz	9
波束宽度/(°)	10
阵元孔径	2.54λ
阵元间距/m	10
阵元个数	2、3、4、5、6
干扰距离/m	1 000

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Analysis on wave-front phase distortion characteristics based on NSGA-Ⅱ

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