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1、实用文档大全实用文档激光多普勒雷达光学接收系统的设计摘要激光多普勒雷达,就是利用多普勒效应进行定位,测速,测距等工作的雷达。它由激光发射机、光学接收机、转台和信息处理系统等组成,其中光学接收系统是激光多普勒雷达的重要部件之一,其成像质量的好坏直接决定了激光多普勒雷达的性能。本文设计一个相对孔径D/f=1.125,视场为±20的激光多普勒雷达光学接收系统。通过方案选择和比较,选择了折射式系统作为接收系统的结构。本文采用ZEMAX软件进行模拟设计,根据设计参数要求,通过查找光学镜头手册选定了一个符合要求的初始镜头结构。首先将初
2、始结构参数输入到ZEMAX软件中,然后采用透镜组整体弯曲的方法进行了像差校正,使得系统的球差、彗差、象散、场曲和畸变减小到一个较小值,最后采用软件自动优化程序,得到了一个成像质量满足要求的光学系统。论文最后还进行了对样板、公差分析以及绘制了光学系统图和零件图。最终,设计出的光学系统的焦距为80mm,入瞳孔径是90mm,视场角为40,视场在00,0.7070,1.4140,20弥散斑大小分别为13.289um,14.711um,20.797um,34.094um,MTF值在100lp/mm分别为0.7,0.7,0.6.0.5
3、满足弥散斑直径小于400um,MTF在100lp/mm大于0.3的技术指标,最终设计的光学系统达到了设计要求。关键词:激光多普勒雷达;光学接收系统;像差校正;光学设计;ZEMAX大全实用文档LaserDopplerradaropticalreceiversystemdesignAbstractLaserDopplerradarcandopositioning,velocity,rangingusingtheDopplereffects.Itincludesthelasertransmitter,opticalreceive
4、r,turntableandinformationprocessingsystems,inwhichtheopticalreceivingsystemisoneoftheimportantcomponentsofthelaserDopplerradar.TheimagequalityofopticalreceiversystemdirectlydeterminestheperformanceofthelaserDopplerradar.ArelativeapertureoftheD/f=1.125,fieldofviewo
5、f±20laserDopplerradaropticalreceiversystemisdesigned,ThroughcomparingandchoosingtheprogramtherefractionsystemisselectedasthestructureofthereceivingsystemauthorusetheZEMAXsoftwaredoinganalogdesign.FirsttheinitialstructuralparametersareinputtedtotheZEMAXsoftware.And
6、thendoaberrationcorrectionthroughthecurvedlensgroupasawholemakingthesystemofsphericalaberration,coma,大全实用文档astigmatism,fieldcurvatureanddistortionwhichisreducedtoasmallervalue.Finally,authorusethesoftwareautomaticallyoptimizeprocedures,animagingopticalsystemisgene
7、ratedwhichqualitymeettherequirementsUltimately,authordesignanopticalsystemwhosefocallengthis80mm,therelativeapertureis90mmandthefieldofviewis20.Thediffusespotsizeis13.289uminthefieldof00Thediffusespotsizeis14.711uminthefieldof0.7070Thediffusespotsizeis20.797uminth
8、efieldof1.4140Thediffusespotsizeis34.094uminthefield20.MTFvaluesis0.7at100lp/mminthefieldof00and0.7070,.MTFvaluesis0.6at100lp/mminthefieldof1.4140.MTFva