GPS,GALILEO,北斗可见星数目仿真

一个简单的GPS信息解析的demo，从GPGGA信息中取除了时间、经纬度、和卫星数目,其他信息可以通过程序出相同的方法得到.-A simple GPS information parsing demo, taken from the GPGGA message in addition to time, latitude, longitude, and the number of satellites, and other information can be obtained by the sa