基于噪声乘积调制的SAR-GMTI间歇采样干扰方法

doi:10.12305/j.issn.1001-506X.2022.10.09

Abstract

Abstract:

In order to prevent the reconnaissance of synthetic aperture radar-ground moving target indication (SAR-GMTI) to moving targets on the ground, a smart jamming method of intermittent sampling based on noise multiplication modulation is proposed. Combining the intermittent sampling jamming with noise multiplication modulation, the jamming method can not only guarantee transceiver isolation, but also efficiently produce different effects of multiple target deception and dense target cover by the offline template design. The process performs intermittent sampling firstly, and then multiplys product modulation with the designed template. The jamming signal model is established and the interference effect on SAR and SAR-GMTI is analyzed, the influence of reconnaissance error on performance is explained. The results show that the proposed method can make up for the defect of intermittent sampling effectively, whose distribution of false target is regular and distinguishable. The jamming scope is expanded and the jamming result is flexible.

Key words: synthetic aperture radar (SAR), ground moving target indication (GMTI), intermittent sampling, multiplication modulation, smart jamming

CLC Number:

TN95

Guang SUN, Shiqi XING, Datong HUANG, Yongzhen LI, Xuesong WANG. Jamming method of intermittent sampling against SAR-GMTI based on noise multiplication modulation[J]. Systems Engineering and Electronics, 2022, 44(10): 3059-3071.

Figures/Tables 9

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参数名称	取值	参数名称	取值
飞行高度/m	5 000	脉冲重复频率/Hz	669
飞行速度/(m·s^－1)	200	信号带宽/MHz	10
天线间隔/m	3	合成孔径长度/m	212
信号载频/GHz	10	信号脉宽/μs	100

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Jamming method of intermittent sampling against SAR-GMTI based on noise multiplication modulation

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