gps单点定位，未加入对流层延迟改正。 包括文件读取，卫星坐标计算，平差模型，简单行列式转换求矩阵的逆。-GPS single point positioning, did not join the troposphere delay correction

GPS伪距单点定位，包括导航文件、观测文件、精密钟差和精密星历的读取，对流层Hopfield模型，电离层K8模型，采用最小二乘法，最后通过调用matlab来计算测站坐标。对GPS编程初学者是很好的编程哦。-GPS pseudorange point positioning, including navigation documents, observation files, precision clock bias and precision ephemeris read, Hopfield m