基于环带波束天线的星间链路设计仿真  

Design and simulation on the inter-satellite-links with annular antenna

作　　者：韩涛[1,2] 卢晓春[1,2] 窦霁虹[3] 

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院精密导航定位与定时技术重点实验室,西安710600 [3]西北大学数学系,西安710127

出　　处：《中国科学：物理学、力学、天文学》2010年第5期628-637,共10页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：中国科学院院方向性项目(编号:KJCX2-YW-T12);国家重点基础研究发展计划(编号:2007CB815502);西北大学研究生交叉学科项目(编号:08YJC10)

摘　　要：在卫星装备有环带波束天线的前提下,设计了由这类卫星构成的Walker星座内的星间链路,并对该星间链路的基本几何属性进行了仿真,证明了这类星间链路可以很好的解决卫星间天线对准的问题.首先,对环带波束天线、星间链路进行了简要的介绍,主要通过几何模型与几何参数方程的方式进行介绍和说明.其次,对于环带波束天线应用在星间链路中的可能性以及优越性进行了阐述,并且在特定的卫星星座当中,对这类星间链路中的卫星天线指向问题进行了仿真,从几何方面证明了该类环带波束天线使得卫星之间永久可视.再次,通过仿真结果中的链路俯仰角、链路距离等提出这一类天线的覆盖范围要求.最后,建立了具有环带波束天线卫星的Walker星座中的链路拓扑结构.Under the intuition of a satellite already equip the annular antenna, the Inter-Satellite-Links （ISL） in a Walker constellation made up of these satellites was designed. The basal geometric attributes of the ISL were simulated, which proved the effect of solving antenna collimation problem. First, a brief introduction of annular antenna and ISL were given, by the depiction of geometric model and geometric parameter equations. Then the possibility and advantages of equipping annular antenna into a satellite was expatiated. The angles between antenna direction and ISLs in a given Walker constellation were simulated to prove the perpetual visibility between satellites. After that, the coverage bound requirements of the annular antenna were obtained from the simulation of azimuth, elevation and distance in the ISLs. At last, the topological structure of Walker constellation made up of satellites equipped annular antenna was given.

关 键 词：环带波束天线 数学模型 星间链路 永久可视 拓扑结构 

分 类 号：TN965.2[电子电信—信号与信息处理]