Experimental research on polarized LIDAR imaging based on GM-APD

Changrui Qiu; Jianfeng Sun; Xin Zhou; Peng Jiang; Chengcheng Li; Qi Wang

doi:10.1117/12.2577063

7 October 2020 Experimental research on polarized LIDAR imaging based on GM-APD

Changrui Qiu, Jianfeng Sun, Xin Zhou, Peng Jiang, Chengcheng Li, Qi Wang

Proceedings Volume 11571, Optics Frontier Online 2020: Optics Imaging and Display; 1157107 (2020) https://doi.org/10.1117/12.2577063
Event: Optics Frontiers Online 2020: Optics Imaging and Display (OFO-1), 2020, Shanghai, China

Abstract

Aiming at the problem that the Geiger-mode Avalanche Photodiode (GM-APD) is susceptible to background noise and the detection effect decreases during the day, based on the polarization GM-APD detection model, a set of GM-APDbased polarized lidar imaging experimental equipment is proposed. Using this equipment to image the target in the simulated sunlight environment, the effect of polarization detection on the echo triggering performance was studied. The results show that, compared with the non-polarized system, the polarized system reduces the impact of noise on target detection, improves the image quality, and reduces the false alarm probability of the image. When the laser single pulse energy is 400nJ, and the polarization angle is 135° , the trigger probability of the metal plate is increased by 10.5%, and its false alarm probability is reduced by 4.6%; the trigger probability of the rough wood board is reduced by 15.2%, and its false alarm probability is reduced 8.9%.Due to the deterioration of imaging results caused by background noise, it is proposed to use polarization degree images for further background filtering to extract a more complete target contour. This research work provides experimental support for the effective detection of GM-APD lidar during the day.

Citation Download Citation

Changrui Qiu, Jianfeng Sun, Xin Zhou, Peng Jiang, Chengcheng Li, and Qi Wang "Experimental research on polarized LIDAR imaging based on GM-APD", Proc. SPIE 11571, Optics Frontier Online 2020: Optics Imaging and Display, 1157107 (7 October 2020); https://doi.org/10.1117/12.2577063

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