Time-frequency analysis of laser doppler radar vibration signals

doi:10.37188/CO.2019-0251

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Time-frequency analysis of laser doppler radar vibration signals
	H.-k. Chen,T.-f. Wang,S.-s. Wu,Y.-y. Li,J. Guo and H. Wu
刊名	Chinese Optics
	2020
卷号	13 期号:5 页码:1014-1022
ISSN号	20951531
DOI	10.37188/CO.2019-0251
英文摘要	Most actual vibration signals measured by lidar are time-varying signals. Methods of time-frequency analysis based on Fourier transforms are effective tools for processing time-varying signals. In this paper, the properties of the Wigner-Wiley distribution, the smooth pseudo-Wigner-Wiley distribution, the spectrogram, the Bonn-Jordan distribution, and the extended modified B distribution are compared and analyzed with actual vibration signals measured by laser Doppler radar. Three kinds of vibrations are measured with a laser Doppler radar: chirps generated by a single loudspeaker, two-component chirps generated by two loudspeakers, and adult male heartbeat vibrations. Their time-frequency distribution resolution and the suppression of cross-terms are analyzed. By calculating the time-frequency concentration index, the analysis capacites of the five distributions for three vibrations are compared. Experimental results indicate that the performance of the extended modified B distribution is better than that of the other four time-frequency distributions. Therefore, the extended modified B distribution is more suitable for the detection of material resonance frequency of laser Doppler radar and the detection of heartbeat. Copyright 2020 Chinese Optics. All rights reserved.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64966]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H.-k. Chen,T.-f. Wang,S.-s. Wu,Y.-y. Li,J. Guo and H. Wu. Time-frequency analysis of laser doppler radar vibration signals[J]. Chinese Optics,2020,13(5):1014-1022.
APA	H.-k. Chen,T.-f. Wang,S.-s. Wu,Y.-y. Li,J. Guo and H. Wu.(2020).Time-frequency analysis of laser doppler radar vibration signals.Chinese Optics,13(5),1014-1022.
MLA	H.-k. Chen,T.-f. Wang,S.-s. Wu,Y.-y. Li,J. Guo and H. Wu."Time-frequency analysis of laser doppler radar vibration signals".Chinese Optics 13.5(2020):1014-1022.