空军工程大学学报（自然科学版）Issue(4)：42-45,4.DOI:10.3969/j.issn.1009-3516.2014.04.011
利用Gabor-PWVD变换实现进动目标微多普勒分析与仿真
Micro-Doppler Time-Frequency Analysis and Simulation on Precession Target by Gabor-PWVD Transform
摘要
Abstract
In order to get better time-frequency analysis results of Micro-Doppler precession signals,this paper tries to analyze precession signals in the aspect of time-frequency through a Gabor-PWVD j oint time-frequency analysis.Firstly,the method is used to get two arrays through performing Gabor transform and PWVD transform in precession signals,and make them do point multiplication.When signal items remain in both of them,the point multiplication result can be obtained.If the Gabor transform area in correspon-dance with the PWVD cross terms area has no value,the result of the point multiplication is zero.The simulation results show that the use of Gabor-PWVD joint time-frequency analysis method can get better time-frequency distribution without containing cross terms and have a good time-frequency clustering at the same time.Compared with the theoretical values,the periodic feature extracted by Hough transform to the Gabor and Gabor-PWVD time-frequency chart shows that the error decreases from 2% to 1 .8%,and this verifies that the Gabor-PWVD is superior in performance.关键词
进动/微多普勒/时频分析/Gabor-PWVDKey words
precession/micro-Doppler/time-frequency analysis/Gabor-PWV分类
信息技术与安全科学引用本文复制引用
罗亚宗,冯有前,李松,张纳温,岳韶华..利用Gabor-PWVD变换实现进动目标微多普勒分析与仿真[J].空军工程大学学报（自然科学版）,2014,(4):42-45,4.基金项目
国家自然科学基金资助项目(61372166 （）
61102109) （）
