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《Acta Optica Sinica》 2003-01
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Study on Signals of In-Plane Displacement Measurement Utilizing Laser Doppler Effect

He Shunzhong Liu Yanyu Jiang Chengzhi Chen Lincai Yao Xin(College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072)(Received 10 December 2001; revised 11 March 2002)  
When utilizing laser Doppler effect to measure in plane displacement of an object at long distance, the intensity of Doppler signals of scattering light, SNR and quality of signals are very important parameters, and they affect the distance and accuracy of displacement measurement directly. The Doppler differential method, lock in amplifier and homomorphic filter are studied. A differential optical measuring system with the best effect, a lock in amplifier with high sensibility and high Q and a homomorphic system that can re construct the lost signals are designed. So the transverse displacement measurement of object at distance of 50m is accomplished with the maximal relative error of 1.5%.
【Fund】: 国家教委博士点基金资助课题
【CateGory Index】: TN247
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1 HE Shun-zhong, LI Qing-min, JIANG Cheng-zhi, LIU Hong-li, GAO Hua, HE Shao-hui (The National Key Laboratory of Precision Measuring and Testing Technique and Instrument, Tianjin University, Tianjin 300072, China);Inverted Differential Grating Demodulation System of Laser Doppler[J];Chinese Journal of Lasers;2005-06
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4 Hong Xin He Shunzhong Jiang Chengzhi Chen Lincai (College of Precision Instrument and Opto electronics Engineering of Tianjin University, Tianjin 300072);Remote Displacement Measurement of Solid Scattering Surface Utilizing Laser Doppler Effect[J];Acta Optica Sinica;2001-01
5 He Shunzhong Yao Xin Jiang Chengzhi Chen Lincai Liu Jinfeng (The National Key Lab of Precision Measuring and Testing Technique and Instrument, Tianjin University, Tianjin 300072) (Received 29 July 2002; revised 26 August 2002);Optimization of Optical System Capable of Off-Surface Displacement Measurement[J];Acta Optica Sinica;2003-11
6 Sang Bo,Zhao Hong,Wang Xueli,Tan Yushan Research Institute for Laser and Infrared Applications,Xi′an Jiaotong University,Xi′an 710049;2-D LASER DOPPLER VIBROMETER[J];Acta Photonica Sinica;2001-05
7 Yu Guang,Wang Shuguo (Institute of Robot,Harbin Institute of Technology,Harbin,150001) Yu Junhua (National Key Laboratory of Tunable laser Technology,Institute of Opto electronics,Harbin Institute of Technology,Harbin,150001);Technology of digital speckle pattern interferometry and its applications[J];Laser Technology;2002-03
8 Zhang Xiaoyuan Hong Xin He Shunzhong Zhang Xiaofang Jiang Chengzhi Chen Lincai (Tianjin University, State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin 300072);Study on Measurement Technique of Scattering-surface Displacement Utilizing Laser Doppler Effect[J];CHINESE JOURNAL OF LASERS;2000-08
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10 Liu Hongli Li Changxi (Department of Control Science & Engineering,HUST, Wuhan 430074);Design of Lock-in Amplifier Circuit to Measure Weak Signal[J];Journal of Wuhan University of Technology;2002-05
【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 LIU Hong-li~(1),SHAO Lei~(1),JIA Ming-yan~(2),HU Yong-le~(2),WANG Bao-guang~(1),HUANG Fu-xiang~(1),Jiang Cheng-zhi~(1)(1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin Univ.,Tianjin 300072 China;2.Northwest Institute of Nuclear Technology,Xi' an 710024,China);STUDY ON LASER DOPPLER TECHNOLOGY IN MEASUREMENT OF BLAST SHOCK[J];Journal of Vibration and Shock;2008-01
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