多层卫星网络激光星间链路空间特性仿真  

Space Characteristic Simulation of Optical Inter-satellite Links in Multi-layer Satellite Networks

作　　者：余侃民[1] 李勇军[1] 吴继礼[1] 洪华[1] 易鹏[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《电讯技术》2010年第10期87-92,共6页Telecommunication Engineering

基　　金：国家高技术研究发展计划(863计划)项目(2007AA01Z294)~~

摘　　要：多层卫星网络结构由于其鲁棒性强,可实现无缝覆盖等特点而成为研究热点。针对高轨/中轨/低轨(GEO/MEO/LEO)多层卫星网络结构,研究了各个节点间的激光链路,推导出了不同轨道间两个卫星位置关系的坐标转换公式。对同层间激光链路(OISL)、异层间激光链路(OIOL)俯仰角、方位角以及距离参数和GEO对LEO覆盖特性进行了仿真。结果表明,卫星光学终端俯仰指瞄范围完全可以满足目标星的移动要求,但水平指瞄范围和扫描速度是影响星间激光链路性能的主要因素。Multi-layer satellite network structure has become the research focus for its excellent qualities of high robustness and seamless coverage. For multi-layer GEO/MEO/LEO satellite network, optical inter-satellite links （OISLs） are studied, coordinate transformation formula of position relationship between two different orbit satellites is deduced. Azimuth and distance of OISL connecting the same layer satellites, OIOL（ Optical Inter- orbit Link） linking different layer satellites and coverage from GEO to LEO are simulated, and results show that the elevation pointing range of laser communication terminal on board is good enough for the movement of target satellite, however, its azimuth tracking range and speed is the main factor influencing the performance of optical inter-satellite links.

关 键 词：卫星通信 多层卫星网络 激光星间链路 空间特性 捕获、瞄准和追踪 

分 类 号：TN929.11[电子电信—通信与信息系统]