《gps基本原理及其matlab仿真》(西安电子科技大学)里面的程序源代码，都是自己亲自敲上的。这是第5章的。对入门很有用的。-The basic principle of GPS and the matlab simulation (xi　an university of electronic science and technology) in the program source code, is knock on yourself. This is the fifth chapter. The introduction is very useful.