卫星信号模拟器CBOC中频信号设计与实现  

Design and Implementation of CBOC IF Signal of Satellite Signal Simulator

作　　者：孙树杰[1] 寇艳红[1] 周鸿伟[2] 

机构地区：[1]北京航空航天大学电子信息工程学院,100191 [2]北京跟踪与通信技术研究所,100094

出　　处：《微计算机信息》2010年第7期110-112,共3页Control & Automation

基　　金：申请人:寇艳红;项目名称:先进导航信号体制综合设计;仿真验证与测试评估;颁发部门:国家科技部(2007AA1Z302)

摘　　要：GNSS卫星信号模拟器对于GNSS系统及用户接收机的研究和设计起着非常重要的作用。本文主要研究针对Galileo系统E1频点CBOC中频信号的产生方法及数字处理技术,在基于PCIE+DSP+FPGA+DAC架构的中频板卡上完成了与PC上位机通信、波形控制参数计算和更新、副载波生成、基带信号调制以及模拟中频信号的产生;最后给出了频谱、相关峰、定位误差等测量结果,验证了信号的质量和正确性。Satellite signal simulators play an important role in research and design validation of GNSS（Global Navigation Satellite System）,especially of user equipment.This paper mainly focuses on the generation methods of the CBOC signals at frequency of E1 of Galileo system based on satellite signal simulator and the digital signal processing technology,Functions of communication with PC,calculation and updating of waveform controlling parameters,generation of sub-carrier,baseband signal modulation and generation of analog IF signal are implemented on the IF signal modulator based on the architecture of PCIE＋DSP＋FPGA＋DAC.The accuracy and quality of simulated are verified in the spectrum,correlation,measurement,and position domains.

关 键 词：复合二进制偏置载波 信号模拟器 直接数字频率合成 数字控制振荡器 

分 类 号：TN97[电子电信—信号与信息处理]