北斗卫星信号多普勒频移的电路设计  

Design and implementation of Beidou satellite signal Doppler frequency shift

作　　者：张蕊[1] 黄海生[1] 

机构地区：[1]西安邮电大学,陕西西安710121

出　　处：《电子技术应用》2014年第11期47-49,56,共4页Application of Electronic Technique

基　　金：陕西省科技统筹创新工程计划战略基金资助项目(2012KTCQ01-06);陕西省教育厅服务地方专项基金项目(2013JC10);国家科技重大专项(2013ZX03001010-003)

摘　　要：接收机在接收卫星信号时,由于接收机与卫星的相对运动,导致卫星信号在传播过程中出现多普勒频移。为了实现卫星信号中载波多普勒的剥离,设计了一种基于北斗卫星信号的载波多普勒剥离电路。描述了载波多普勒产生的原因以及剥离的方法,并详细论述了该电路的设计方法。最后对该电路进行MATLAB和Modelsim仿真,验证了设计的载波多普勒剥离模块性能满足北斗卫星接收机的要求。When the receiver receives the satellite signals,the relative motion between satellites and the receiver will cause the Doppler frequency shift in transmission.In order to realize the separation of the Doppler frequency shift,this paper designs a Beidou based carrier Doppler frequency shift circuit.It discusses the reason of the generation of carrier Doppler frequency shift and the ways of how to separated it.It also describes the detail design of this circuit.According to the procedure simulating and actual receiver testing,the design of the carrier Doppler frequency shift meets the requirement of the Beidou satellite signal receiver.

关 键 词：北斗 抽取滤波器 多普勒频移 载波NCO 

分 类 号：TN967.1[电子电信—信号与信息处理]