天线组阵全频谱合成效率分析  

Analysis on Combining Efficiency of Full-Spectrum Combining

作　　者：周三文[1,2] 卢满宏[1,2] 黄建国 

机构地区：[1]西北工业大学,西安710072 [2]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2009年第2期46-52,共7页Journal of Telemetry,Tracking and Command

摘　　要：天线组阵是一种提高天线等效增益的有效方法,而全频谱合成在信号解调前进行信号合成,提高解调时的信噪比,具有最佳的系统性能,是一种最优的天线组阵信号合成方案。为了给全频谱合成的系统设计提供指导,对其合成效率进行详细的理论分析与计算。结果表明,当采用SUMPLE相关算法进行天线组阵全频谱合成时,如果天线数量越多,单个天线接收信号的信噪比越强,互相关带宽越窄,相位差闭环带宽越窄,那么合成效率就越高,反之,合成效率就越低。Antenna arraying is an effective way to increase the antenna gain and Full-Spectrum Combining(FSC) is an op-timum scheme whose combining is completed before demodulation.In order to provide some propositions for FSC,theoretical analysis and computation are carried out in detail.The results show that combining efficiency of FSC is determined by the an-tenna numbers,input SNR,cross-correlation bandwidth,PLL bandwidth and correlation algorithms.

关 键 词：天线组阵 全频谱合成 合成效率 

分 类 号：TN820[电子电信—信息与通信工程]