一种基于时分复用的卫星接收机结构  

A Satellite-equipped Receiver Architecture Scheme on Time Division Multiplexing

作　　者：许文龙[1] 白栋[1] 尚勇[1] 项海格[1] 

机构地区：[1]北京大学信息科学技术学院卫星通信实验室,北京100871

出　　处：《铁道学报》2005年第5期120-123,共4页Journal of the China Railway Society

基　　金：武器装备预研基金资助项目(51421060203JW0205);国家自然科学基金资助项目(N60462002);国家自然科学基金资助项目(60302006)

摘　　要：提出一种星载接收机结构方案。在接收机数量少于星载阵列天线阵元数的条件下,基于较少数量的接收机实现全部阵元输出信号的接收处理。阵列天线划分为虚拟子阵列,基于时分复用工作方式,通过程控交换矩阵与接收机连接,接收机对不同虚拟子阵列天线输出信号分时进行接收处理。给出了接收机结构框图、工作原理和性能仿真结果。A satellite-equipped receiver architecture scheme is proposed. In the case that the number of receivers has to be less than that of array elements in an array-antenna, it can receive and process the impinged signals on all the array-elements. By dividing the large array antenna into a set of virtual subarray antennas, the receivers are connected to each subarray via a program-controlled switch based on time-division-multiplexing, and process the output snapshots on the subarray-antenna. The receiver＇s block diagram, flowchart and performance simulation results are given in the paper.

关 键 词：卫星通信 阵列信号处理 时分复用(TDM) 阵列天线 虚拟子阵列 

分 类 号：TN927[电子电信—通信与信息系统]