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Proceedings Paper

System gain optimization in direction detection lidar system
Author(s): Long Wu; Fan Wu; Yuan Zhao; Yong Zhang; Yu Zhang; Jie Wu
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Paper Abstract

This paper presents an equivalent direct detection receiver model by statistical method which simplifies the random impulse responses of electrons counting of returned signal, background radiation and dark current as a Gaussian random process with high enough gain. An investigation based on Gaussian distribution of system output in ICCD scannerless range-gated Lidar system is conducted with the calculations of error probability, absolute error and relative error. As the unique manipulated variable, optimized system gains are calculated separately based on the Gaussian model of the random process to achieve the lowest error probability, the lowest absolute error and relative error. The simulations show that the values of optimized gains tend to increase along with the target distance, although the increasing speeds are different. To meet multiple requests, an evaluation model based on cost function is constructed with different weights. The simulation shows that the evaluation model is capable of setting optimized gains for different circumstances and the settings of the weights are vital to the performance of Lidar system.

Paper Details

Date Published: 17 September 2011
PDF: 7 pages
Proc. SPIE 8127, Optical Modeling and Performance Predictions V, 812705 (17 September 2011); doi: 10.1117/12.902605
Show Author Affiliations
Long Wu, Harbin Institute of Technology (China)
Fan Wu, Harbin Institute of Technology (China)
Yuan Zhao, Harbin Institute of Technology (China)
Yong Zhang, Harbin Institute of Technology (China)
Yu Zhang, Harbin Institute of Technology (China)
Jie Wu, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 8127:
Optical Modeling and Performance Predictions V
Mark A. Kahan, Editor(s)

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