用IRIS观测归算世界时和地极坐标  

UT1 AND POLAR MOTION DERIVED FROM THE OBSERVATIONS OF IRIS

作　　者：罗时芳 郑大伟 周瑞仙 薛祝和 陈剑利 

出　　处：《中国科学院上海天文台年刊》1989年第10期1-9,共9页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

摘　　要：本文给出用IRIS观测归算的1984年11月至1987年3月的世界时和地极坐标系列(PUSHAO)。归算中,改进了钟模型的选择方式、对流层中性大气延迟模型和射电源坐标。求得的系列内部精度平均值好于由美国国家大地测量局(NGS)归算系列的同期结果。During Nov. 1984 to March 1987 the series of polar Motion and UT1 (SHAO) derived from the observations of IRIS are provided in this paper. The selection of clock behaviour parameters, the tropospheric delay model and the coordinates of radio sources are improved in the data processing. The mean internal accuracies of SHAO series are better than those obtained by National Geodetic Survey of USA (NGS) in the same duration.

关 键 词：IRIS观测 归算方法 世界时 地极坐标 大气延迟模型 射电源 

分 类 号：P127.4[天文地球—天体测量]