摘要
文中分析了具有超前瞄准的地-星激光通信中非等晕引起的光束漂移,在考虑光束漂移及对数正态分布的湍流强度闪烁的条件下,建立了激光强度闪烁模型。分析表明,在存在超前瞄准角及发射光束直径较大时,由非等晕引起的残余光束漂移严重降低地-星激光通信性能,增大光束发散角可有效降低光束漂移的影响。
Residual beam wander induced by anisoplanatism of ground-to-satellite laser communication systems in the presence of point-ahead angle was analyzed, lonsidering the residual beam wander and turbulence-induced log-normal distributed scintillation, a intensity scintillation model was given. The research shows that the residual beam wander induced by anisoplanatism degrades the performance of ground-to-satellite seriously while the point-ahead angle and transmitting beam diameter are large. The influence of residual beam wander can be reduced by enlarging the beam divergence angle.
出处
《弹箭与制导学报》
CSCD
北大核心
2008年第1期223-226,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
卫星激光通信
强度闪烁
大气湍流
光束漂移
非等晕误差
satellite laser communication, scintillation
atmospheric turbulence, beam wander,anisoplanatism error
