Isoplanatic Angles of Single-and Dual-conjugate Adaptive Optics Systems in Lidar
-
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.
-
Key words:
- single-conjugate /
- dual-conjugate /
- conjugation height /
- isoplanatic angle /
- lidar
-
周仁忠,阎吉祥.自适应光学理论[M].北京:北京理工大学出版社,1996:205-217.[2] BECKES J M.Multi-conjugate adaptive optics:experiments in atmospheric tomography[C]//Proc.of SPIE,Munich:[s.n.],2000,4007:1056-1065.[3] YAN Jixiang,ZHOU Renzhong,YU Xin.Calculation of the isoplanatic patch for MCAO[J].Opt.Eng.,1993,32(12):3161-3163.[4] FRIED D L.Anisoplanatism in adaptive optics[J].J.Opt.Soc.Am.1982,72(1):52-61.[5] STONE J,HU P H,MILS S P.et al.Anisoplanatic effects in finite-aperture optical system[J].J.Opt.Soc.Am.,1994,11(1):347-357.[6] LUKIN V P,FORTES B V.Estimation of turbulent degradation and required spatial resolution of adaptive system[C]//Proc.of SPIE,Barcelona:[s.n.],1998,3494:191-202.[7] FRIED D L.Limiting resolution looking down through the atmosphere[J].J.Opt.Soc.Am.,1996,56(10):1382-1391.[8] MASCIADRI E,EGNER S.First complete seasonal variation study of the 3D optical turbulence above San Pedro Martir Observatory[C]//Proc.of SPIE,Scotland:[s.n.],2004,5490:818-829. -
点击查看大图
计量
- 文章访问数: 1535
- HTML全文浏览量: 61
- PDF下载量: 336
- 被引次数: 0
下载: