现代电子技术2018，Vol.41Issue(1)：5-8,4.DOI:10.16652/j.issn.1004-373x.2018.01.002
差分GPS实时数据解调算法研究与实现
Research and implementation of differential GPS real-time data demodulation algorithm
摘要
Abstract
The real-time data transmission format of differential GPS is relied on RTCM-SC104 and formed with MSK modu-lation. A discrete Hartley transform demodulation algorithm based on windowing sliding is proposed for the differential GPS real-time data. With the algorithm,the slided rectangular window is used for symbol synchronization,whose window length is the symbol width and the moving step length is one;the acquired synchronization information is performed with discrete Hartley transform;the digital symbol is restored by means of amplitude information.The Matlab simulation results show that,in comparison with the reference algorithm,the demodulation algorithm has better performance,stronger practicability and broader feasibility. The correct demodulation of the differential GPS real-time data was realized on VC++ platform.关键词
离散哈特莱变换/差分GPS/RTCM-SC104/MSK解调/误码率/同步Key words
discrete Hartley transform/differential GPS/RTCM-SC104/MSK demodulation/bit error rate/synchronization分类
信息技术与安全科学引用本文复制引用
罗伟娟,李迟生,虞贵财..差分GPS实时数据解调算法研究与实现[J].现代电子技术,2018,41(1):5-8,4.基金项目
国家自然科学基金(61661030)Project Supported by National Natural Science Foundation of China (61661030). （61661030）
