According to the lastest conversion relation between BRS and GRS, we derive the relativistic theory model of laser ranging for GRS within pico-second level, and enlarge the application range of the laser ranging model recommended by IERS.

• 根据最新的BRS和GRS系之间的时空坐标变换关系 ,在皮秒 (10 - 1 2 s)的精度下 ,推导出了在GRS中适合于所有激光测距问题的相对论模型 ,同时扩展了IERS推荐的激光测距模型的适用范围