罗伟娟,李迟生,虞贵财

• 1:南昌大学信息工程学院

摘要(Abstract)：

差分GPS实时数据传输格式依据RTCM-SC104标准,采用MSK调制而成。为了精确地获取MSK信号的码元信息,针对差分GPS实时数据提出一种基于加窗滑动的离散哈特莱变换解调算法。该算法首先采用窗口长度为码元宽度,移动步长为1的矩形窗滑动后求码元同步,获取同步信息后再对其进行离散哈特莱变换,最后通过幅值信息还原出数字码元。经Matlab仿真结果表明,该解调算法性能比对比算法更优,实用性及适用性更广,最后在VC++平台上实现了差分GPS实时数据的正确解调。

关键词(KeyWords)： 离散哈特莱变换;差分GPS;RTCM-SC104;MSK解调;误码率;同步

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(61661030)~~

作者(Author): 罗伟娟,李迟生,虞贵财

DOI: 10.16652/j.issn.1004-373x.2018.01.002

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