摘要
本文介绍了利用美国喷气推进实验室(JPL)的星历磁带DE303,在计算机内存中创建DE303/LE303星历表和月球天平动LLB303文件的过程,并应用这一最新历表处理了1987年10月至1990年12月的全球4个测月站的观测资料,求得了UT0-UTC序列SHA90 M01。同时,对不同历表解算的UT0-UTC结果也作了比较。计算结果表明,采用DE303/LE303星历表LLB303天平动历表归算得到的UT0-UTC序列的外部精度略好于用DE200/LE200星历表及LLB200天平动历表归算所得结果序列的外部精度。
The procedure for creating the files DE303/LE303 ephemeris and lunar libration LLB303 on computer storage by JPL ephemeris tape is described in this paper.
Using the latest planetary and lunar ephemeris, the universal time series UTO-UTC (SHA90 MOD was determined from global data of lunar laser ranging during October 1987 to December 1990, the UTO-UTC series obtained with various ephemeris was compared. It is shown that the external accuracies of the UTO-UTC series derived by DE303/LE303 ephemeris and lunar libration LLB303 are slightly better than those determined by DE200/LE200 ephemeris and LLB 200 libration model.
出处
《中国科学院上海天文台年刊》
1992年第13期96-103,共8页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
