Photon counting range-finder for moving target detection

Zeng, Xianjiang; Huang, Yu; Du, Wei; Chen, Ming

doi:10.1117/12.2624278

Cited by 1 publication

(1 citation statement)

References 5 publications

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“…The schematic diagram of our TCSPC laser range-finder was shown in figure 3 [11]. The main components of the system were a nanosecond pulsed laser, a collimating mirror, a collection telescope, a Gm-APD (Geiger Mode Avalanche Photodiodes Detector), an Infra-Camera and control system.…”

Section: Experiments Setupmentioning

confidence: 99%

Single-photon lidar range-finding by the CFAR detector

Wang¹,

Zeng²,

Yu³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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Ultra-long-distance range-finding is often affected by scattering noise, resulting in a low signal-to-noise ratio (SNR) due to the extremely weak retro-reflected light. Due to the low SNR, it is difficult to determine the corresponding distance from the sensor during the final stage of signal processing. It is challenging to adjust the threshold to achieve both a high detection rate and a low false alarm rate. In this study, we propose an effective detector for locating low SNR targets in ultra-long-distance measurements. The detector is based on the constant false alarm rate (CFAR) processing framework widely used in radar target detection. We applied this detector for signal processing in the photon counting system for long-range, small dynamic targets, which we reported in our earlier work. In-site experiments were conducted in Dunhuang, Gansu in September 2021. We successfully performed long-range laser ranging for 60km buildings and ultra-long-range laser ranging for 152km mountain. The results showed that the proposed CFAR detector could quickly and efficiently extract target locations that were difficult to detect using a detector based on constant thresholding.

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Section: Experiments Setupmentioning

confidence: 99%