差分伪距修正算法。应用于GPS导航的伪距差分算法，包含基准站、用户站的具体算法-Differential pseudorange correction algorithm. For GPS navigation pseudo-range differential algorithm, including the base station, subscriber station specific algorithm

gps基线解算基础函数，包括伪距定位，差分定位，坐标转换等-gps baseline solution based functions, including pseudo-range positioning, differential positioning, coordinate transformation