Time-frequency analysis of laser doppler radar vibration signals

doi:10.37188/CO.2019-0251

CIOMP OpenIR

	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
	2020
发表期刊	Chinese Optics
ISSN	20951531
卷号	13 期号:5 页码:1014-1022
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.
DOI	10.37188/CO.2019-0251
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收录类别	EI
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文献类型	期刊论文
条目标识符	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.

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