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	Arctangent compensation algorithm of laser speech detection system
	Yan, C.; T. Wang; H. Zhang; T. Lv and Y. Zhao
刊名	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
	2017
卷号	46期号:9
英文摘要	The 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.
语种	中文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/59363]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 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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