GPS闪烁软件接收机的设计与实现  

Design and Realization of GPS Ionospheric Scintillation Software Receiver

作　　者：黄智[1] 袁洪[2] 

机构地区：[1]徐州师范大学,江苏徐州221116 [2]中国科学院光电研究院,北京100190

出　　处：《计算机仿真》2010年第11期53-56,共4页Computer Simulation

基　　金：国家自然科学基金(40374054)

摘　　要：为了通过实际观测数据提取并实时显示闪烁指数S4,用于电离层闪烁现象的研究和空间天气环境监测。根据电离层闪烁测量的基本原理,主要探讨了用于电离层闪烁测量的GPS软件接收机系统的设计与实现。设计了以GP2015、FPGA和DSP芯片为核心的GPS信号采集处理系统,并在PC机上进一步探讨了信号的捕获、跟踪算法以及电离层幅度闪烁指数S4的提取方法。相关结果表明GPS软件接收机的计算结果与美国硬件闪烁接收机GSV4004的观测结果是一致的。GPS软件接收机的硬件结构可靠,软件算法合理,具有良好的应用和开发价值。The GPS scintillation software receiver is more flexible and anti-jamming than traditional hardware receiver.It upgrades the performance of system and has unprecedented advantage in the field of space environment nowcast and forecast.The paper placed emphasis on the design and realization of GPS ionospheric scintillation software receiver based on PC.Systems of GPS signal processing based on GP2015,FPGA and DSP were designed.According to the principle of ionospheric scintillation measurement,algorithms of signal acquisition and tracking were discussed.Computational method of ionospheric index S4 based on GPS signal was also analyzed in this paper.Using the real GPS signal,results of signal trace and index S4 were displayed.The relevant results show that the GPS scintillation software receiver works well.

关 键 词：全球定位系统 软件闪烁接收机 信号采集 捕获 跟踪 闪烁指数 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]