小倾角GE O卫星多波束天线覆盖特性优化

摘要

Simulation and optimization for antenna coverage characteristics of inclined GEO satellite with multi-beam antenna were presented from the view of satellite orbit,antenna and pointing.Firstly,the problems of inclined orbit,sub-beam installation,inclined orbit control and beam dynamic pointing were analyzed and formulated for dynamic coverage calculation. Secondly,the evaluation indexes of antenna coverage were constructed and optimization model was built for antenna coverage.Finally,the simulation results show that the uncover problems can be solved and the coverage characteristics can be improved by optimizing the antenna pointing.%从轨道、天线和指向控制角度，对小倾角轨道 GEO 卫星多波束天线对地覆盖特性进行建模仿真和优化研究。首先对小倾角轨道、天线波束安装与排布、倾斜轨道控制以及波束动态指向等问题进行了理论分析与建模，得到了基于姿态偏置控制的天线动态覆盖计算模型；接着构造了天线覆盖性能的评估指标，并从指向角度建立了覆盖特性优化模型；最后，工程算例仿真表明，通过天线指向优化既可以解决覆盖问题，又能改善对服务区的覆盖特性。研究结果表明，文中建立用于覆盖计算、评估和优化的模型合理正确，可用于天线覆盖仿真。