湍流边界层对空-地光通信系统性能的影响

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栽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λ*,以上这些措施都可以将气动光学像差降低到最小.

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

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 of some parameters such as height,speed,location of im-age equipments and wavelength on the platform were analyzed and simulated with matlab. The results show thatheightshould 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 platform,for the wavelength...