| 具有超前瞄准的地-星光通信链路中的闪烁特性研究 |
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| 引用本文： | 李玉旗,向劲松.具有超前瞄准的地-星光通信链路中的闪烁特性研究[J].弹箭与制导学报,2008,28(1):223-226. |
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| 作者姓名： | 李玉旗 向劲松 |
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| 作者单位： | 1. 国防科学技术大学电子科学与工程学院,长沙,410073;63880部队,河南洛阳,471003
2. 重庆大学,重庆,400044 |
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| 摘 要： | 文中分析了具有超前瞄准的地一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一星激光通信性能，增大光束发散角可有效降低光束漂移的影响。
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| 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 |
| 收稿时间： | 2007-01-17 |
| 修稿时间： | 2007年1月17日 |
Scintillation Characteristics of Ground-to-satellite Laser Communicationy in the Presence of Point-ahead Angle |
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| LI Yuqi,XIANG Jinsong.Scintillation Characteristics of Ground-to-satellite Laser Communicationy in the Presence of Point-ahead Angle[J].Journal of Projectiles Rockets Missiles and Guidance,2008,28(1):223-226. |
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| Authors: | LI Yuqi XIANG Jinsong |
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| Abstract: | 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. |
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| Keywords: | satellite laser communication scintillation atmospheric turbulence beam wander anisoplanatism error |
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