读取RINEX文件格式的测量数据和导航星历数据文件，解析出相应的各种参数。-Read the measurement data of the RINEX file format and navigation ephemeris data files, parsing out the various parameters.

本程序实现了Rinex格式的单点定位，通过迭代算法使得定位精度为10-30m；-This program implements Rinex format single point positioning through an iterative algorithm so that the positioning accuracy of 10-30m