Introduction - If you have any usage issues, please Google them yourself
Global Positioning System (GPS) is the 70s of this century by the U.S. Army to jointly develop a new generation of space satellite navigation and positioning system, its main purpose is for land, sea and air to provide real-time three main areas, all-weather and global navigation services. As the GPS can provide users with the goal of dynamic three-dimensional position, three-dimensional velocity and time information, with high precision, to the characteristics of real-time location, it has become the vehicle navigation, positioning monitoring program of choice.