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Proceedings Paper

Performance analysis of range-gated active imaging system
Author(s): Hua-yan Sun; Hui-chao Guo; Ying-chun Li
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Paper Abstract

The performance of passive photoelectric detection system for target detection is seriously affected by many factors, such as the background light, the weather condition and the target temperature contrast, etc. To overcome the disadvantages of the passive detection system, lots of domestic and foreign institutes are focusing on the research of the laser active imaging detection system. Laser active imaging system based on range-gated technology use high peak power laser pulse to illuminate the target, meanwhile use the receiving system with synchronization control circuit to detect part of the reflected light from the target for imaging. It can efficiently suppress the brightness noise and the backscattering noise, and apparently advance the imaging and identification performance for small dark target far away. In this paper, on analyzing the principle of the range-gated laser active imaging technology, we studied the system range performance limited by SNR thresholds due to the detector noise and the background noise respectively. By analyzing in theory and simulation calculation, we made out the relationship between system range performance and other system parameters in certain atmosphere conditions. The parameters include peak laser power, laser divergence angle, imaging system resolution, target contrast, system SNR, etc.

Paper Details

Date Published: 28 August 2009
PDF: 6 pages
Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73822E (28 August 2009); doi: 10.1117/12.835576
Show Author Affiliations
Hua-yan Sun, The Academy of Equipment Command & Technology (China)
Hui-chao Guo, The Academy of Equipment Command & Technology (China)
Ying-chun Li, The Academy of Equipment Command & Technology (China)

Published in SPIE Proceedings Vol. 7382:
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging
Farzin Amzajerdian; Chun-qing Gao; Tian-yu Xie, Editor(s)

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