此matlab函数可以在ECEF和ECI坐标之中转转换地点和速率信息。 ，经测试可直接使用。 -This Matlab function can be transferred into the ECEF and ECI coordinate conversion location and rate information. Has been tested and can be used directly.

地球坐标系转换程序，地球地心地固坐标系转经纬高，matlab实现(coordinate transform, from to ecef to llh implemented by matlab)