扩频测控系统干扰容限的分析  

Analysis of Jamming Threshold for Spread Spectrum TT&C Systems

作　　者：薛敦伟[1] 李志强[2] 张北江[2] 朱文明[2] 

机构地区：[1]北京航空航天大学,北京100086 [2]解放军理工大学通信工程学院,南京210007

出　　处：《遥测遥控》2011年第1期15-17,21,共4页Journal of Telemetry,Tracking and Command

摘　　要：扩频测控系统以其诸多优点正成为卫星测控的主流体制,经典分析给出扩频系统的干扰容限只是一个宽泛的界。在同时考虑输入信号强度、多址干扰等因素的情况下,对扩频测控系统的干扰容限上界进行分析推导,得出更符合实际情况的干扰容限上界的闭式表达,通过计算给出干扰容限与多址干扰、干扰容限与输入信噪比强度的关系。Due to the advantages of spread spectrum TT&C system,it is becoming the mainstream TT&C system.The loose bound of jamming threshold for spread spectrum system has been already given in traditional analysis.While in this paper,considering different input SNR levels and different multi-user interferences simultaneously,the close form of a tight jamming threshold for spread spectrum TT&C system is deduced.Calculation results of the relations of jamming threshold vs.multi-user interferences and input SNR levels are also given.

关 键 词：扩频测控 干扰容限 多址干扰 处理增益 

分 类 号：TN914.42[电子电信—通信与信息系统]