此程序是Rinex3.0X格式的GNSS数据读取代码。Rinex3.0X格式与之前最常用的Rinex2.1X有较大差别，随着北斗和伽利略的建设，3.0X格式被普遍需要，所以如何更好的读取3.0X格式的数据很重要，也希望有更好方法的一起交流。-This program is using to read Rinex3.0X format GPS data . The Rinex3.0X is very different the most common format Rinex2.1X bef

GNSS 数据存储协议，详细描述GNSS包括：GPS，BDS,GLONASS，Galileo的数据存储规范。-GNSS data storage protocols, including a detailed descr iption of GNSS: GPS, BDS, GLONASS, Galileo data storage specification.

对于卫星精密轨道的数据解析协议，针对GPS，BDS等全球导航卫星适用。-For data analysis protocols precise satellite orbits for GPS, BDS and other global navigation satellite apply.