Chinese Journal of Lasers, Volume. 35, Issue 7, 1001(2008)
Reflective Characteristics of Target in Laser Rangefinder
For a laser range finder to measure the smallest non-cooperative target, the reflective characteristics of the target surface are significant for echoed signal. A experimental setup to measure the bidirectional reflection distribution (BRDF) of the surface is developed. The BRDF functions of white-painting coating and F36 cladding heating reflective materials at 1064 nm are obtained. The results show that the white-painting coating has small specular reflection and large scattering angle, it is better for laser range finder. While, the specular reflection of F36 material is too magnitude, and the scattering angle is only -2°~2°. The echoed signal of laser rangefinder will be great fluctuation with the incident angle. Through comparing the minimal receiving power obtained by BRDF and Lambertian diffuse reflection, the echoed signal is very small, when the incident angle is larger than 45° and 2° for white-painting coating and F36 cladding, respectively.
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Zhang Leihong, Yang Yan, Zang Huaguo, Hu Shanjiang, Chen Weibiao, Lu Yutian. Reflective Characteristics of Target in Laser Rangefinder[J]. Chinese Journal of Lasers, 2008, 35(7): 1001