USB接口GPS中频信号采样器研究与实现  

Research and realization of GPS intermediate frequency signal sampler based on USB

作　　者：曾庆喜[1] 王庆[2] 杨英杰[3] 宋阳[3] 

机构地区：[1]南京航空航天大学车辆工程系,南京210096 [2]东南大学仪器科学与工程学院,南京210096 [3]东北电力大学信息工程学院,吉林132012

出　　处：《电子测量与仪器学报》2012年第10期883-888,共6页Journal of Electronic Measurement and Instrumentation

摘　　要：提出了一种模块化的GPS中频信号采样器设计方法基于GPS射频前端芯片来设计信号前端电路;利用FPGA实现了射频前端与USB之间数据实时高速传输;提出了采样率转换在FPGA中实现的方法和适合本采样器的信号验证算法系统测试结果表明,该设计的GPS中频信号采样器信号验证算法高效准确可靠性高。A design method for modular GPS IF signal sampler is proposed in this paper.The radio frequency front end is designed based on a GPS radio frequency integrated circuit.A method of real-time and high-speed data transmission between front end and USB is presented.The sampling rate conversion is realized in FPGA.An algorithm of signal verification suitable for this sampler is presented.The experimental results prove that the algorithms are efficient,accurate and highly reliable.The design is suitable for the development and test of software GPS receiver.

关 键 词：GPS中频信号采样 USB 射频前端 采样率转换 信号捕获 

分 类 号：TN967.1[电子电信—信号与信息处理]