Micro-Doppler Time-Frequency Analysis and Simulation on Precession Target by Gabor-PWVD Transform
LUO Ya-zong
FENG You-qian
LI Song
ZHANG Na-wen
YUE Shao-hua
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.
Keywords：precessionmicro-Dopplertime-frequency analysisGabor-PWV
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )