Three-Dimensional Laser Imaging Based on a Photon-Counting Avalanche Photodiode Array
1 East China Research Institute of Electronic Engineering, Hefei 230088, Anhui, China
2 Key Laboratory of Aperture Array and Space Application, Hefei 230088, Anhui, China
3 Civil Aviation University of China, Tianjin 300300, China
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Published online: 7 July 2020
Photon-counting detector array is very desired for high-resolution laser imaging based on direct time-of-flight measurement. Such systems have potential applications in remote sensing with long distances. We will perform three-dimensional imaging using a large InGaAs Geiger-mode avalanche photodiode array which has single-photon sensitivity. To improve the image quality with only a few photon detections, the photon counting imaging process is analyzed and a regularization method based on pixel spatial correlation is employed for image reconstruction. The performance of the method is compared with that of conventional maximum likelihood estimation on intensity and range image reconstructions of a building about six hundred meters away.
© The Authors, published by EDP Sciences, 2020
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