Low-noise high-accuracy TOF laser range finder

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Abstract

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= ± 50 cm. Furthermore, the sampling rate of the distance measurement can be adjusted between 1 and 20 samples per second. © 2008 Science Publications.

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APA

Nejad, S. M., & Olyaee, S. (2008). Low-noise high-accuracy TOF laser range finder. American Journal of Applied Sciences, 5(7), 755–762. https://doi.org/10.3844/ajassp.2008.755.762

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