摘要
通过与地面应用激光雷达的对比分析了空间激光遥感系统的工作特点。根据测距方程,对影响空间激光遥感系统回波功率的外部因素进行讨论。分析了回波探测系统的设计要素,对激光遥感系统探测概率与信噪比间关系进行讨论,并针对雪崩光电二极管(APD)的最佳工作点控制技术和雪崩高压稳定控制技术进行了深入分析,同时根据最佳线性滤波器匹配设计理论给出了接收通道带宽与增益的理论设计结果。
Comparing with the system which was designed for the ground application, the operation characteristics of space-borne laser remote sensing system are analyzed. According to the laser ranging equation, external factors which influence echo power are discussed. The design elements of echo detecting system are analyzed and the relation be- tween detection probability and SNR is discussed. The optimal operation point setting technique and high bias voltage stability control technique of APD are studied in detail. Based on the theory of optimum liner filter designing, the theoretic design results,such as the bandwidth and gain of the receiver,are given in this paper.
出处
《激光与红外》
CAS
CSCD
北大核心
2009年第1期21-24,共4页
Laser & Infrared
关键词
激光遥感
探测概率
雪崩光电二极管
滤波器
laser remote sensing
detection probability
avalanche photodiode
filter
