湍流边界层对空—地光通信系统性能的影响  

Influences of Turbulent boundary Layer on Space-to-ground Laser Communication System

作　　者：殷柯欣[1] 姜会林[1] 佟首峰[1] 吴琼[1] 

机构地区：[1]长春理工大学光电工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2008年第3期13-15,12,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家863计划资助项目(2003AA712014)

摘　　要：由湍流边界层产生的气动光学效应是空地激光通信系统设计需要解决的关键技术。在研究了相关的湍流边界层理论的基础上,分别对飞行高度、速度、激光通信系统的机上位置和波长对机载光学平台像差的影响逐一进行分析,并利用matlab进行了数字仿真。仿真结果表明:飞行高度要尽可能地高,速度要尽可能地慢,同时激光通信系统要尽可能地向机体前方移动。对于波长的选取,既要考虑系统的对比度又不能忽视对分辨率的影响,只有这样才能得出一个使系统处于最佳状态的波长*,以上这些措施都可以将气动光学像差降低到最小。Aero-optic effects produced by turbulence boundary layer （TBL） are the key technology of Space-to-ground laser communication system. Based on TBL theories, the influences ofsome parameters such as height, speed, locationofim- age equipments and wavelength on the platform were analyzed and simulated with matlab. The results show that height should be as high as possible and speed should be as slowly as possible, the location of the equipments is also moved to the front of the airborne platfonri, for the wavelength we should consider the contrast and resolution as well through which can we acquire the best performance for the system. All of these methods can reduce the aberrations.

关 键 词：湍流边界层 气动光学效应 光学像差 strehl 

分 类 号：TN929.12[电子电信—通信与信息系统]