Optimization of laser ranging system in the case of colored noise

Jiangming Li; Otmar Loffeld; Rudolf Schwarte; Bernd Buxbaum; Zhanping Xu

doi:10.1117/12.256266

29 October 1996 Optimization of laser ranging system in the case of colored noise

Jiangming Li, Otmar Loffeld, Rudolf Schwarte, Bernd Buxbaum, Zhanping Xu

Proceedings Volume 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling; (1996) https://doi.org/10.1117/12.256266
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

This paper proposes an optimized model of the laser ranging system in the case of colored noise, which is based on the theory of maximum-likelihood estimation. With this model the ranging error is analyzed in detail for colored noise in different cases in which the optical receiver is approximated as first, second and third order low pass filter, respectively. The theoretical results are further verified by means of more detailed numerical simulations, where some characterizing parameters such as signal-noise- ratio, bandwidth of the optical receiver and laser power etc., are taken into account. According to theoretical and simulated results a ranging system with a novel delay-locked loop is experimentally realized and investigated. This paper will also present measurement results to demonstrate the practical feasibility of the optimized laser ranging system.

Citation Download Citation

Jiangming Li, Otmar Loffeld, Rudolf Schwarte, Bernd Buxbaum, and Zhanping Xu "Optimization of laser ranging system in the case of colored noise", Proc. SPIE 2904, Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling, (29 October 1996); https://doi.org/10.1117/12.256266

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