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Proceedings Paper

AOM and lock-in amplifier lidar-radar system for distance measurement
Author(s): Lei Li; Suhui Yang; Xinpeng Sun; Lan Gao; Liping Tao; Changming Zhao
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Paper Abstract

The lidar-radar architecture has been developed and used in detection and identification of targets in many domains. Based on the single frequency monothilic NPRO (Nonplanar Ring Oscillator) and AOM (Acousto-Optical Modulator), a lidar-radar conceptive system for distance measurement has been constructed and investigated. The system consists of mainly three parts: the beat frequency laser source made up of NPRO and AOM, the transmitting and reflection collecting system and the lock-in amplifier signal processing unit. Then the distance measurement has been demonstrated using a 700-meter long single-mode fiber. In order to calculate unambiguously the actual distance, two synthetic frequencies have been introduced in turn. At last, using the lidar-radar setup, the displacement and velocity of a moving target which is mounted on a precise motorized optical bench have been displayed.

Paper Details

Date Published: 10 June 2006
PDF: 7 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 63443A (10 June 2006); doi: 10.1117/12.694444
Show Author Affiliations
Lei Li, Beijing Institute of Technology (China)
Suhui Yang, Beijing Institute of Technology (China)
Xinpeng Sun, Beijing Institute of Technology (China)
Lan Gao, Beijing Institute of Technology (China)
Liping Tao, Beijing Institute of Technology (China)
Changming Zhao, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)

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