Low-Noise High-Accuracy TOF Laser Range Finder | Science Publications

American Journal of Applied Sciences

Saeed Olyaee¹  Shahram M. Nejad¹ 

关键词: Time-of-flight;    laser range finder;    Q-switched Nd:YAG laser;    optical filters;   

DOI  :  10.3844/ajassp.2008.755.762

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

This paper presents a new low-noise high-accuracy laser range finder based on the Time-Of-Flight (TOF) method. A Q-switched Nd:YAG laser at 1064 nm as a source and a SLIK avalanche photodiode as a detector are used. The optical section of the system including ZnS/MgF₂ optical filter, designed by C⁺⁺ and Zemax software, has been successfully implemented and tested. The quality factor of the optical filter is obtained about 2.53. Using the 1.5 MW Nd:YAG laser, the lowest detectable optical power is limited to about 8.14 nW. The absolute range finding error in the range of 0.3-20 km is also measured as δ_r=

【 授权许可】

Unknown