中国物理B ›› 2018, Vol. 27 ›› Issue (9): 94213-094213.doi: 10.1088/1674-1056/27/9/094213

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Detection performance improvement of photon counting chirped amplitude modulation lidar with response probability correction

Yi-Fei Sun(孙怿飞), Zi-Jing Zhang(张子静), Li-Yuan Zhao(赵丽媛), Wei-Min Sun(孙伟民), Yuan Zhao(赵远)   

  1. 1 Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2 Key Laboratory of In-fiber Integrated Optics, Harbin Engineering University, Harbin 150001, China
  • 收稿日期:2017-11-19 修回日期:2018-05-16 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Zi-Jing Zhang, Wei-Min Sun, Yuan Zhao E-mail:zhangzijing@hit.edu.cn;sunweimin@hrbeu.edu.cn;zhaoyuan@hit.edu.cn
  • 基金资助:

    Project supported by the Fundamental Research Funds for the National Defense Basic Scientific Research, China (Grant No. JCKY2016603C007).

Detection performance improvement of photon counting chirped amplitude modulation lidar with response probability correction

Yi-Fei Sun(孙怿飞)1, Zi-Jing Zhang(张子静)1, Li-Yuan Zhao(赵丽媛)2, Wei-Min Sun(孙伟民)2, Yuan Zhao(赵远)1   

  1. 1 Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2 Key Laboratory of In-fiber Integrated Optics, Harbin Engineering University, Harbin 150001, China
  • Received:2017-11-19 Revised:2018-05-16 Online:2018-09-05 Published:2018-09-05
  • Contact: Zi-Jing Zhang, Wei-Min Sun, Yuan Zhao E-mail:zhangzijing@hit.edu.cn;sunweimin@hrbeu.edu.cn;zhaoyuan@hit.edu.cn
  • Supported by:

    Project supported by the Fundamental Research Funds for the National Defense Basic Scientific Research, China (Grant No. JCKY2016603C007).

摘要:

Geiger mode avalanche photodiode detector (Gm-APD) possesses the ultra-high sensitivity. Photon counting chirped amplitude modulation (PCCAM) light detection and ranging (lidar) uses the counting results of the returned signal detected by Gm-APD to mix with the reference signal, which makes PCCAM lidar capable of realizing the ultra-high sensitivity, and this is very important for detecting the remote and weak signal. However, Gm-APD is a nonlinear device, different from traditional linear detectors. Due to the nonlinear response of Gm-APD, the counting results of the returned signal detected by Gm-APD are different from those of both the original modulation signal and the reference signal. This will affect the mixing effect and thus degrade the detection performance of PCCAM lidar. In this paper, we propose a response probability correction method. First, the response probability correction model is established on the basis of Gm-APD Poisson probability response model. Then, the response probability correction model is used to adjust the original modulation signal that is used to drive laser, in order to make the counting results of the returned signal detected by Gm-APD better mix with the local reference signal in the same form. Through this method, the detection performance of PCCAM lidar is enhanced efficiently.

关键词: photon counting, chirping, lidar

Abstract:

Geiger mode avalanche photodiode detector (Gm-APD) possesses the ultra-high sensitivity. Photon counting chirped amplitude modulation (PCCAM) light detection and ranging (lidar) uses the counting results of the returned signal detected by Gm-APD to mix with the reference signal, which makes PCCAM lidar capable of realizing the ultra-high sensitivity, and this is very important for detecting the remote and weak signal. However, Gm-APD is a nonlinear device, different from traditional linear detectors. Due to the nonlinear response of Gm-APD, the counting results of the returned signal detected by Gm-APD are different from those of both the original modulation signal and the reference signal. This will affect the mixing effect and thus degrade the detection performance of PCCAM lidar. In this paper, we propose a response probability correction method. First, the response probability correction model is established on the basis of Gm-APD Poisson probability response model. Then, the response probability correction model is used to adjust the original modulation signal that is used to drive laser, in order to make the counting results of the returned signal detected by Gm-APD better mix with the local reference signal in the same form. Through this method, the detection performance of PCCAM lidar is enhanced efficiently.

Key words: photon counting, chirping, lidar

中图分类号:  (Remote sensing; LIDAR and adaptive systems)

  • 42.68.Wt
42.79.Qx (Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)