我国经度原点经度改正值的重新归算  

REREDUCTION OF CORRECTION VALUES OF CHINESE LONGITUDE ORIGIN

作　　者：金文敬[1] 唐正宏[1] 廖德春[1] 张耀 

机构地区：[1]中国科学院上海天文台

出　　处：《测绘学报》1995年第3期178-182,共5页Acta Geodaetica et Cartographica Sinica

摘　　要：本文用１９７６年天文常数系统，１９８０年章动模型和ＦＫ５星表，重新归算了我国经度原点对应于不同极原点的经度改正值，计算中考虑了星表、固体潮、海潮的影响，其结果为（观测的平均历元为１９７５年３月２９．３０日）Δλ（ＣＩＯ）＝２６．７ｍｓ±１．４ｍｓΔλ（ＪＹＤ）＝３０．９ｍｓ±１．４ｍｓΔλ（ＭＰ）＝３１．３ｍｓ±１．Abstract Based on the astronomical constants system of 1976，1980 nutation model and the FK5catalog the correction values of longitude origin related to the different polar origin were re－reduced with considering systematic differences of stellar catalogs,earth solid tide and oceantide in this paper.The results are Δλ（CIO）＝0．0267~s±0． 0014~s，Δλ（JYD）＝0．0309~s±0．0014~s，Δλ（MP）＝0．0313~s±0．0014~s，where CIO，JYD and MP mean the conventional inter- national origin， mean pole of the epoch 1968 and the mean pole of epoch respectively．Thecorresponding epoch is March 29．30，1975.

关 键 词：经度测量 经度原点 改正值 重新归算 

分 类 号：P128.11[天文地球—天体测量]