基于时频交叉乘积的调频连续波SAR干扰方法研究

doi:10.12305/j.issn.1001-506X.2023.06.08

Abstract

Abstract:

Frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR) has significant advantages of good concealment and high imaging resolution, which is widely used in military target reconnaissance and attack. Fast and effective jamming has become an important problem in today's research. In this paper, FMCW SAR jamming method based on time-frequency cross is proposed. The intercepted signal is modulated with the jamming image template to generate the jamming signal. At the same time, the FMCW SAR intercepted signal is processed by dechirp method in signal handling process for the FMCW SAR's intercepted signal, which greatly reduces the signal sampling rate in signal handling process. The proposed method realizes the generation of realistic fake scenes, which reduces the computational complexity in the modulation process of jammer and reduces the hardware pressure, and has engineering feasibility.

Key words: frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR), time-frequency cross, dechirp processing, fake scene, computational complexity

CLC Number:

TN95

Junpeng WANG, Shiqi XING, Yongzhen LI, Datong HUANG, Shaoqiu SONG. FMCW SAR jamming method research based on time-frequency cross[J]. Systems Engineering and Electronics, 2023, 45(6): 1651-1657.

Figures/Tables 11

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References 23

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参数类型	数值	参数类型	数值
载频/ GHz	9.00	平台速度/(m/s)	100.00
带宽/MHz	300.00	信号周期/ms	0.33
距离向分辨率/m	0.50	方位向分辨率/m	0.50

参数类型	变频处理	去斜处理
采样率/MHz	600.00	32.69
图像均值	103.21	103.60
图像标准差	113.13	112.85

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FMCW SAR jamming method research based on time-frequency cross

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