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

作     者：Yi-Fei Sun Zi-Jing Zhang Li-Yuan Zhao Wei-Min Sun Yuan Zhao 孙怿飞;张子静;赵丽媛;孙伟民;赵远

作者机构：Department of PhysicsHarbin Institute of TechnologyHarbin 150001China Key Laboratory of In-fiber Integrated OpticsHarbin Engineering UniversityHarbin 150001China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第9期

页      面：322-326页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 080706[工学-化工过程机械] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081105[工学-导航、制导与控制] 0807[工学-动力工程及工程热物理] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

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

主　　题：photon counting chirping lidar 

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 prob- ability 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.