基于Geiger-mode APD的激光雷达性能分析  

Performance analysis for laser radars based on Geiger-mode APD

作　　者：方照勋[1] 张华[1] 李海廷[1] 路英宾[1] 高剑波[1] 陈德章[1] 卿光弼[1] 

机构地区：[1]西南技术物理研究所,四川成都610041

出　　处：《激光与红外》2011年第10期1092-1097,共6页Laser & Infrared

摘　　要：针对基于盖革模式雪崩光电二极管(Gm-APD)阵列的激光雷达,提出一种分析其探测性能的方法。以分析单个Gm-APD像元产生的初始光电子和暗计数噪声为基础,对Gm-APD像元的探测概率、虚警概率和漏警概率进行研究,并进一步提出一种多脉冲阈值探测法,并对其探测概率、虚警概率进行了研究和仿真。结果表明,对2～10 km外的目标,采用128×128像元面阵探测器,单脉冲能量小于200 mJ时,探测概率随脉冲能量提高而提高;单脉冲能量大于200 mJ时,探测概率保持不变;当采用多脉冲阈值探测、信号较弱时,探测概率总是随脉冲能量提高而提高,虚警概率总是随脉冲能量提高而降低。This paper introduces a method for analyzing the performance of laser radar based on Geiger-mode avalanche photodiode（APD）array.The detection probability,false-alarm probability and miss alarm probability are researched by analyzing the creation of primary photon electronics and dark count rate noise.Further more,the method of threshold detection with multiple-pulses are proposed,of which the detection probability and false probability are researched and simulated.For a target at a distance of 2 km to 10 km and the 128×128 Geiger-mode APD array,the detection probability of the ladar system can be improved as the pulse energy increasing,while the pulse energy should less than 200 mJ.When the pulse energy is above 200 mJ,the detection probability is constant.For the threshold detection with multiple-pulses,the detection probability of the ladar system can be improved as the pulse energy increasing,and the false-alarm probability can be reduced as the pulse energy increasing.

关 键 词：三维成像 激光雷达 盖革模式 雪崩光电二极管 探测概率 虚警概率 

分 类 号：TN249[电子电信—物理电子学] TN958.98