GPS中频信号采集及分析系统设计  

Design of a system for sampling and analysis of GPS IF signal

作　　者：陶梦 李金城[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《电子技术应用》2017年第9期34-38,共5页Application of Electronic Technique

摘　　要：设计了一种GPS中频信号采集及分析系统,系统利用FPGA将NJ1006射频前端输出的数字化GPS中频信号进行字节拼接,然后通过USB上传到上位机,实现了射频前端与PC之间实时高速数据传输;研发的VC++数据处理程序将采集到的GPS信号进行文本转换和数据分析。实验证明该GPS中频信号软硬件采集系统不仅能采集GPS中频信号,而且能数据分析,为GPS基带处理算法的研究提供了可靠的原始数据。This paper designed a system for sampling and analysis of Global Position System Intermediate Frequency signal( GPS IF signal), which reconstructs the digitalized GPS IF signal by Field Programmable Gate Array( FPGA) and uploads these signal bytes to Personal Computer( PC) through USB to achieve real-time and high-speed data transmission. The VC + + data processing program firstly converts the received bytes to text data and then analyses them. Experimental results prove that proposed hardware and software co-design system can not only sample GPS IF signal, but also analyze the sampled data, and can be used to offer reliable data for research of GPS baseband processing algorithms.

关 键 词：GPS中频信号 USB 信号采集 数据分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]