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Proceedings Paper

A laser ranging method based on grating diffraction
Author(s): Jun Zhuo; WuMei Lin; Xin Jia
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Paper Abstract

Laser has several advantages, such as high brightness, excellent directivity, good monochromatic, good coherence and so on [1]. Therefore, in ranging schemes which combine laser sensor technology and automatic control technology [2], the laser ranging is most commonly used nowadays [3]. First, we introduce the principle of grating diffraction in this paper, and proposes a method for ranging based on the laser reflection characteristics of target. Let the laser beam reflected from the target through the diffraction grating and lens and image on the CCD. In the horizontal plane perpendicular to the direction of incidence, grating, lens and CCD make up of an imaging device, and which can measure the distance of target for many times by moving itself horizontally. We can calculate the distance through measuring the range between the central point of the CCD and zero diffraction fringe. Then, we analyze the influence from the targets’ scattering characteristics. Lastly, we simulate the different status according to the proportion of mirror reflection of the actual targets’ scattering characteristics and get a conclusion that only the proportion of mirror reflection exceeds a particular ratio can calculate a valid distance.

Paper Details

Date Published: 10 February 2017
PDF: 7 pages
Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102501G (10 February 2017); doi: 10.1117/12.2266656
Show Author Affiliations
Jun Zhuo, Institute of Optics and Electronics (China)
WuMei Lin, Institute of Optics and Electronics (China)
Xin Jia, Institute of Optics and Electronics (China)

Published in SPIE Proceedings Vol. 10250:
International Conference on Optical and Photonics Engineering (icOPEN 2016)
Anand Krishna Asundi; Xiyan Huang; Yi Xie, Editor(s)

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