Suppression to the cross-channel interference based on the short time Fourier transform

被引：0

作者：

何密 ^{[1
]}

Nian Yongjian ^{[2
]}

Li Yongzhen ^{[2
]}

Xiao Shunping ^{[2
]}

机构：

[1] School of Biomedical Engineering,Third Military Medical University and Chongqing University

[2] School of Electronic Science and Engineering,National University of Defense Technology

来源：

High Technology Letters | 2013年 / 19卷 / 03期

基金：

中国国家自然科学基金;

关键词：

simultaneous measurement; cross-channel interference suppression; the short time Fourier transform(STFT); the inverse short time Fourier transform(ISTFT);

D O I：

暂无

中图分类号：

TN972 [干扰];

学科分类号：

080904 ; 0810 ; 081001 ; 081002 ; 081105 ; 0826 ; 082601 ; 1104 ;

摘要：

A new cross-channel interference suppression method is proposed to decrease the cross-channel interference in beat signals based on the short time Fourier transform(STFT)and the inverse short time Fourier transform(ISTFT)when the dual-orthogonal polarimetric frequency-modulated continuous wave(FMCW)radar adopts the opposite-slope linear frequency modulation signal pair in the simultaneous measurement mode.The STFT is applied only on the signals in the cross-interference intervals in the four polarimetric channels to decrease the computation complexity.A mask matrix for suppressing the interference is constructed using the constant false alarm ratio(CFAR)detection on the spectrograms by the STFT.The simulative results show that the cross-channel interference is efficiently suppressed by the proposed method.The comparison between the proposed method and the rejection method verifies the improved performance of the proposed method.

引用

页码：309 / 314

页数：6

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