电子学报2017，Vol.45Issue(2)：315-320,6.DOI:10.3969/j.issn.0372-2112.2017.02.008
多分量线性调频信号的Wigner-Ville分布交叉项去除
Cross-Term Removal of Wigner-Ville Distribution for Multi-component LFM Signals
摘要
Abstract
A method of cross-term removal for Wigner-Ville distribution is proposed to the detection of multi-component LFM signals.For the frequency characteristics of auto terms and cross terms,it removes cross terms by filtering WVD time-frequency matrix in the transform domain.The matrix transformation formula and the expression of all terms after transformation are given.And in view of the performance of filter,an energy weighted method is put forward to improve the slow oscillating cross term.Simulation and experimental results demonstrate that,it can eliminate the cross term with no reduction of time-frequency resolution.关键词
Wigner-Ville分布/交叉项/时频分辨率/能量加权Key words
Wigner-Ville distribution/cross term/time-frequency resolution/energy weighted method分类
信息技术与安全科学引用本文复制引用
李秀坤,吴玉双..多分量线性调频信号的Wigner-Ville分布交叉项去除[J].电子学报,2017,45(2):315-320,6.基金项目
国家自然科学基金(No.51279033) （No.51279033）
黑龙江省自然科学基金(No.F201346) （No.F201346）
