geocentric geodetic system
geodetic reference spheroid
World Geodetic System 84 Datum 1984
World Geodetic System 84， WGS84 1984
attitude heading and position reference system
Continuous Operational Reference System
连续运行参考系统
连续运行参考站系统
连续运行参考站
连续运行卫星定位系统
连续运行卫星定位服务系统
CORS Continuous Operatinal Reference System
Geocentric Reference System
geographic reference system
geographical reference system
heading reference system
matr-parameter coordinate reference system
military grid reference system
Non-rotating Geocentric Reference System
positional reference system
virtual reference system technology