基于多元探测的机载激光测距性能分析  

Performance Analysis of Airborne Laser Ranging Based on Multivariate Detection

作　　者：郭爱雪 郝培育[2] 吴兴国[2] 郭赛 赵益 GUO Aixue;HAO Peiyu;WU Xingguo;GUO Sai;ZHAO Yi(Science and Technology on Electro-Optic Control Laboratory,Luoyang 471000,China;Luoyang Institute of Electro-Optical Equipment,AVIC,Luoyang 471000,China)

机构地区：[1]光电控制技术重点实验室,河南洛阳471000 [2]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000

出　　处：《电光与控制》2022年第1期80-83,共4页Electronics Optics & Control

基　　金：装备预研中航工业联合基金(6141B05210101)。

摘　　要：对多元探测的灵敏度模型进行研究,结合探测信噪比、探测概率和虚警率等推导建立了该模型,并进行实验验证,证明了该模型的准确性。在此基础上,仿真分析不同探测条件下,APD单元数、脉冲累加次数、填充因子和死时间对探测灵敏度的影响,为多元APD的选型提供理论依据。结果显示,脉冲累加次数为6时,填充因子越大,死时间越小,测距性能越好。在高背景噪声下,APD单元数的增加对探测灵敏度的提升效果显著。在低背景噪声下,采用4元APD就可以达到较好的测距效果。The sensitivity model of multivariate detection is studied,and the model is derived and established by using the detection signal-to-noise ratio,detection probability and false alarm rate.The accuracy of the model is proved by experiments.On this basis,the influence of APD unit number,pulse accumulation times,fill factor and dead time on detection sensitivity under different detection conditions is analyzed,which provides theoretical foundation for the selection of multivariate APD.The results show that: 1) When the pulse accumulation number is 6,the larger the fill factor,the smaller the dead time and the better the ranging performance;2) Under high background noise,increasing the number of APD units can significantly improve the detection sensitivity;and 3) Under low background noise,4-unit APD can achieve better ranging effect.

关 键 词：机载激光测距 多元探测 探测灵敏度 

分 类 号：TN958.98[电子电信—信号与信息处理]