激光雷达应用中单、双层共轭系统等晕角  

Isoplanatic Angles of Single-and Dual-conjugate Adaptive Optics Systems in Lidar

作　　者：荣健[1] 丁学科[1] 钟晓春[2] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054 [2]西南交通大学物理科学与技术学院,四川成都610031

出　　处：《西南交通大学学报》2009年第2期190-194,共5页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(60572079)

摘　　要：为提高机载和地面激光雷达的探测能力,导出了单、双层共轭系统等晕角计算公式.针对激光雷达探讨了共轭高度的选取,并模拟、比较了单、双层共轭系统以及传统AO(自适应光学)系统等晕角.模拟结果表明:在上、下行光路中,双层共轭系统的等晕角增益分别为3 000和1 000μrad,而单层共轭系统等晕角增益在远距离情况下几乎为0.To improve the detective ability of air-borne and ground laser lidar systems, the expressions of isoplanatic angles of single- and dual-conjugate systems were deduced. The selections of conjugation height for lidar systems were discussed, and the isoplanatic angles of single-conjugate, dual-conjugate and classical AO （adaptive optics） systems were compared by numerical simulations. The simulated results indicate that the gains of the isoplanatic angles of a dual-conjugate system are 3 000 and 1 000 p, rad respectively for up or down channel, while the gains of the isoplanatic angles of a single- conjugate system are almost 0 at a long distance.

关 键 词：单层共轭 双层共轭 共轭高度 等晕角 激光雷达 

分 类 号：TB133[机械工程—光学工程]