中文说明：使用MATLAB实现了GPS的伪距单点定位，其中包括了坐标转换和大气的klobuchar的误差计算程序，为了实现可视化，还编写了GUI。
English Description：
The pseudo range point positioning of GPS is realized by using MATLAB, which includes coordinate transformation and Klobuchar error calculation program of atmosphere. In order to realize visualization, GUI is also written.