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Arctangent compensation algorithm of laser speech detection system
Yan, C.; T. Wang; H. Zhang; T. Lv and Y. Zhao
2017
Source PublicationHongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Volume46Issue:9
AbstractThe arctangent demodulation compensation algorithm with parameter estimation error was proposed through analyzing laser speech detection system in theory, then quantitative mathematical formulas between the total harmonic distortion (THD) and key parameters as well as errors were built up. The THD and spurious free dynamic range (SFDR) were considered in this paper, which indicated the demodulation effect of micro vibration signal and minimum signal value distinguished from a large disturbance signal (jamming signal), respectively. This system implemented non-contact, long distance and high sensitive acoustic micro vibration signal detection. Laboratory experiments and simulations were presented to verify the feasibility of the arctangent demodulation compensation algorithm. Results illustrate that this system can detect the micro vibration caused by sound wave and recover voice signal from received signal within 35 meters using the compensation algorithm based on optical hardware platform currently. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Indexed Byei
Language中文
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59363
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Yan, C.,T. Wang,H. Zhang,et al. Arctangent compensation algorithm of laser speech detection system[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2017,46(9).
APA Yan, C.,T. Wang,H. Zhang,&T. Lv and Y. Zhao.(2017).Arctangent compensation algorithm of laser speech detection system.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,46(9).
MLA Yan, C.,et al."Arctangent compensation algorithm of laser speech detection system".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 46.9(2017).
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