A Digital False-Target Image Synthesizer Method Against ISAR Based on Polyphase Code and Sub-Nyquist Sampling

被引：12

作者：

Li, Guang-Ming ^{[1
,2
]}

Zhang, Qun ^{[1
,2
,3
]}

Su, Ling-Hua ^{[1
,2
]}

Luo, Ying ^{[1
,2
,3
]}

Liang, Jia ^{[1
,2
]}

机构：

[1] Air Force Engn Univ, Inst Informat & Nav, Xian 710077, Peoples R China

[2] Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710077, Peoples R China

[3] Fudan Univ, Minist Educ, Key Lab Informat Sci Electromagnet Waves, Shanghai 200433, Peoples R China

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2020年 / 17卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Jamming; Radar; Doppler effect; Synthesizers; Imaging; Modulation; Aerospace electronics; Digital false-target image synthesizer (DIS); inverse synthetic aperture radar (ISAR); polyphase code; sub-Nyquist sampling jamming;

D O I：

10.1109/LGRS.2019.2924978

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Digital false-target image synthesizer (DIS) has been proposed as a deceptive jamming method against inverse synthetic aperture radar (ISAR). The DIS method based on sub-Nyquist sampling jamming has attracted increasing attention in recent years. However, multiple false-target images generated by sub-Nyquist sampling jamming are distributed in the down-range direction rather than the 2-D range-Doppler (RD) imaging plane. A novel DIS method is proposed in this letter. First, an additional phase controlled by polyphase code is added to the intercepted pulse, and the multiple false-target images will be induced regularly along the cross-range direction. Second, in order to generate false-target images both along the down-range and cross-range directions, the sub-Nyquist sampling theory is applied to the first step. The advantage of the proposed method is implementation simplicity. Experimental results verify the effectiveness of the proposed method.

引用

页码：372 / 376

页数：5

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