Isoplanatic Angles of Single-and Dual-conjugate Adaptive Optics Systems in Lidar
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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.Abstract: 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 μrad 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.
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Key words:
- single-conjugate /
- dual-conjugate /
- conjugation height /
- isoplanatic angle /
- lidar
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