空间激光通信一点对多点光学原理与方法的比较研究

一点对多点的激光通信技术是构建天空地一体化信息网络的关键节点，也是实现多卫星间组网链路通信的一个必要前提。将空间激光通信一点对多点光学原理与方法进行了比较和研究，并针对三同心球结构和旋转抛物面结构，在其视场和能量利用率上面进行了分析。分析结果表明：三同心球结构视场可以达到水平和俯仰均为120°，旋转抛物面结构的视场可以达到水平360°，俯仰100°；三同心球结构随着视场的增大，能量利用率迅速下降；而在同等体积情况下，旋转抛物面的能量利用率在80°范围内比三同心球结构更高且更稳定。

A Comparative Research on Optical Principles and Methods of One-point-to-multi-point Space Laser Communication

One-point-to-multi-point laser communication is the key to establish an integrated space-ground information network system, and also is the necessary prerequisite of realizing the inter-satellite communication link. The optical principles and methods of one-point-to-multi-point laser communication are comparied and researched. The fields of view and energy efficiencies of three-concentric sphere structure and rotating parabolic structure are analyzed. The result shows that the horizontal and vertical fields of view of the three-concentric sphere structure are 120°, and the horizontal and vertical fields of view of the rotating parabolic structure are 360° and 100°, respectively. With the increase in the field of view, the energy efficiency of three-concentric sphere structure decreases rapidly. However, the energy efficiency of the rotating parabolic structure is more stable than that of the three-concentric sphere structure in the range of 80°.