摘要
结合全球导航卫星系统中各种卫星信号的频段分布,提出一种适用于双频接收机的射频前端结构,讨论基于该结构的本振频率的选取方法。以GPS的L1频段和Galileo的E1频段为例,对该系统进行仿真验证。仿真结果显示,双频接收机射频前端的各项指标均达到了设计要求。
This paper presents a dual-band receiver front-end structure based on the frequency band partition of Global Navigation Satellite System.The selection method of the local oscillator frequency of this structure is discussed particularly.The system is testified by using the GPS L1 and Galileo E1 frequency bands as illustrations.Simulation results indicate that all of the receiver requirements are met.
出处
《遥测遥控》
2007年第5期15-19,72,共6页
Journal of Telemetry,Tracking and Command
关键词
全球导航卫星系统
射频前端
本振频率选取
镜像抑制
Global Navigation Satellite System
Front-end
Local frequency selection
Image rejection.
