Ranging accuracy improvement of time-correlated signal-photon counting lidar

Zhang, Zijing; Zhao, Yuan; Zhang, Jiandong; Cen, Longzhu; Li, Shuo; Sun, Yifei; Wang, Feng

doi:10.1117/12.2292991

LIDAR Imaging Detection and Target Recognition 2017 2017

DOI: 10.1117/12.2292991

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Ranging accuracy improvement of time-correlated signal-photon counting lidar

Zijing Zhang

Yuan Zhao

Jiandong Zhang

et al.

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Single-Photon Reflectivity and Depth Imaging by Continuous Measurement of Arrival Time of Photons

Yan

Wang

et al. 2019

IEEE Photonics J.

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We demonstrate a reflectivity and depth imaging Lidar system based on a novel photon arrival time measurement method. In this method, the arrival time of photons in a scanning position is continuously measured with a common starting point. The number of laser pulses is counted by a specially designed field programmable gate array (FPGA) control module as the coarse time of arrival photon. Time interval between arrival photon and the nearest coming laser pulse is measured by a time-correlated single-photon counting (TCSPC) module as the fine time of arrival photon. Using the system, not only the singlephoton counting imaging can be realized, but also the first photon imaging, the first two photons imaging, etc. can be realized. A photon statistical model based on the doubly stochastic Poisson point processes, a time-gated filtering algorithm, and the reflectivity algorithm based on maximum likelihood estimation are derived. High-sensitivity reflectivity and depth imaging with a resolution of 512 × 512 pixels are achieved. The experimental results show that the horizontal spatial resolution is 2 mm, the vertical depth resolution is 5.375 cm, and the average number of photons per pixel is less than 1.3 photons.

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Single-Photon Reflectivity and Depth Imaging by Continuous Measurement of Arrival Time of Photons

Yan

Wang

et al. 2019

IEEE Photonics J.

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Ranging accuracy improvement of time-correlated signal-photon counting lidar

Cited by 1 publication

References 0 publications

Single-Photon Reflectivity and Depth Imaging by Continuous Measurement of Arrival Time of Photons

Single-Photon Reflectivity and Depth Imaging by Continuous Measurement of Arrival Time of Photons

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