从一个空间坐标系转换到另外一个空间坐标系，需要具备7个参数，此程序就是计算七参数-About calculate

GPS的大地坐标系与空间直角坐标系之间的转换程序-GPS geodetic coordinate system with the space between the Cartesian coordinate system conversion process

实现gps信号从大地坐标系到空间直角坐标系的相互转换，便于gps信号的滤波处理-Achieve gps signal conversion a geodetic coordinate system to the space Cartesian coordinate system, to facilitate the filtering process gps signal