斜程链路上非Kolmogorov湍流到达角的起伏影响计算分析  

Angle of Arrival Fluctuations Through Non-Kolmogorov Turbulence Along a Slanted Path

作　　者：周俊 王琳 曲洪东[1] 闫玉洁 ZHOU Jun;WANG Lin;QU Hong-dong;YAN Yu-jie(Army Aviation Institute,Beijing 101121,China;The 69036 Troops of PLA,Korla 841000,China)

机构地区：[1]陆军航空兵学院,北京101121 [2]中国人民解放军69036部队,新疆库尔勒841000

出　　处：《光学与光电技术》2022年第5期82-87,共6页Optics & Optoelectronic Technology

摘　　要：湍流引起的恒定相位波前随机起伏会使大气通道波前到达角连续变化。研究了在倾斜大气湍流通道中非Kolmogorov湍流作用下的新的平面波和球面波到达角模型,其特征在于在1/l0附近的高波数下上升很小。湍流内外尺度对不同斜链路到达角的影响不同:下行到达角起伏小于上行到达角起伏,到达角起伏随着内外尺度的增大而增大,随着接收机孔径的增大而显著减小。该结果将为卫星激光通信之类的相关应用提供一定参考。Constant phase front with random fluctuation caused by turbulence will make wavefront angle of arrival change continuous in atmosphere channel. New plane and spherical waves angle of arrival models under non-Kolmogorov turbulence in slant atmosphere turbulent channel are investigated,which featured the small rise at high wave numbers near 1/l0. Turbulence inner and outer scales has different effects on the angle of arrival in different slant link:the downlink angle of arrival fluctuation is smaller than the uplink,the angle of arrival fluctuation increases with the increase of the inner and outer scales,and it is significantly reduced with the increase of the diameter of the receiver aperture. The result will provide reference for related applications such as satellite laser communication.

关 键 词：卫星激光通信 大气传输 到达角 湍流 斜程链路 

分 类 号：O431.2[机械工程—光学工程]