Repeat jamming cognition using time-frequency chips in U domain

被引：0
|
作者：
Wang, Feng [1 ]
Lei, Zhiyong [1 ]
Chen, Qing [1 ]
机构：
[1] Signal Processing Department, Nanjing Research Institute of Electronics Technology, Nanjing Jiangsu 210039, China
来源：
Dianbo Kexue Xuebao/Chinese Journal of Radio Science | 2014年 / 29卷 / 02期
关键词：
Digital radio - Radar - Fourier transforms - Frequency modulation - Chirp modulation - Frequency domain analysis;
D O I：
10.13443/j.cjors.2013050702
中图分类号：
学科分类号：
摘要：
The recognition of the digital radio frequency memory(DRFM) jamming is the precondition to jamming suppression of radar. To radar linear frequency modulation(LFM) signal, the slice difference of the fractional Fourier transform(FrFT) and short Fourier transform(SFT) in U domain is proposed to detect and discriminate the dense repeater jamming. The approximation of the slices of LFM signal repeat jamming in the U domain is adopted to accomplish the detection and discrimination and its efficiency is proven by computer simulation. © Copyright.
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页码：358 / 362
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