USAT动中通系统邻星干扰分析与对策探讨  

Analysis and Countermeasures of Adjacent Satellite Interference in USAT Satcom on Move

作　　者：魏晓辉[1] 张健 钟旭东[1] 

机构地区：[1]解放军理工大学通信工程学院研究生3队,江苏南京210007 [2]中国电子装备系统工程公司,北京100141

出　　处：《通信技术》2016年第3期301-305,共5页Communications Technology

摘　　要：近年来,空间通信卫星数量快速增长,由于卫星通信系统工作频率有限,因此当两个覆盖区有重叠的通信卫星轨道间隔较近时,区域内同频率的超小口径天线终端(Ultra Small Aperture Terminal,USAT)动中通系统之间将会产生邻星干扰。结合USAT与静止卫星单邻星干扰模型,详细阐述了邻星干扰成因,推导了卫星轨位间隔与静止卫星单邻星干扰容限的关系;同时研究了邻星干扰下的链路载干噪比门限备余量设计问题。最后基于数值仿真结果,分析了轨位间隔、干扰终端发射功率及终端天线口径对邻星干扰容限的影响,提出了几种有效的邻星干扰对策。In recent due to the limited w, years, the number of space communication satellites increases rapidly, and however, working frequency of satellite communication system, USAT （Ultra Small Aperture Termi- nal） in the same domain with the same frequency would generate adjacent-satellite interference when there exists a close interval of between the satellite orbits in two coverage areas. The cause of adjacent satellite in- terference is described in combination of USAT with single satellite adjacent satellite interference model, and the relation of satellite orbit interval and geostationary single satellite adjacent satellite interference tolerance also deduced. Meanwhile, the design of the link load interference noise ratio threshold in the condition of the adjacent satellite interference is studied. Finally, based on the results of numerical simulation, the influence of orbit space, transmission power and terminal antenna aperture on the interference tolerance is discussed, and several effective countermeasures of adjacent satellite interference also presented.

关 键 词：超小口径天线终端 动中通 邻星干扰 静止卫星 

分 类 号：TN927.23[电子电信—通信与信息系统]