Performance analysis of range-gated active imaging system

Hua-yan Sun; Hui-chao Guo; Ying-chun Li

doi:10.1117/12.835576

28 August 2009 Performance analysis of range-gated active imaging system

Hua-yan Sun, Hui-chao Guo, Ying-chun Li

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73822E (2009) https://doi.org/10.1117/12.835576
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

Hua-yan Sun, Hui-chao Guo, and Ying-chun Li "Performance analysis of range-gated active imaging system", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73822E (28 August 2009); https://doi.org/10.1117/12.835576

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