国际全球导航卫星系统服务组织精密钟差数据预处理软件

Data preprocessing software based on precise clocks bias of international global navigation GNSS satellite system service

国际全球导航卫星系统服务组织(IGS)产品中提供的精密钟差数据是按照一天一个文本文件的形式存放的,并且在文本文件中,监测站钟差与卫星钟差数据混合排列,这种存放方式给多卫星长时间采样的钟差数据的处理带来极大的不便。针对钟差数据处理中连续长时间采样原始数据获取困难的问题,基于Matlab语言编写了IGS精密钟差数据预处理软件。该软件在图形用户界面的环境中开发:首先,完成了时间格式间的相互转换;然后,按照卫星编号循环处理采样时间段内钟差数据;最后给出了实时统计分析的结果及图形化显示,实现了多卫星、长时间钟差数据的采集和预处理。

The data of precise clocks bias provided by International GNSS Service products is stored in a text file everyday. Moreover, in the text file, the monitor clocks bias and the satellite clocks bias are arranged irregularly, which leads to many inconveniences in processing long-time sampling data from several satellites. In order to get a long sequence of satellite clocks bias, a date preprocessing software is designed here. This software is developed in the environment of graphical user interface based on Matlab. Firstly, time conversion is achieved. Secondly, the data is progressed repeatedly based on the satellite number. At last, the real time statistical results and graphic are presented in this software, realizing the sampling and preprocessing of long-time clocks bias from multiple satellites.