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A discussion of the refraction tables of Pulkovo Observatory

评普尔科沃天文台大气折射表

In the third section , some space astrometric projects , which will probably be carried on in the next decade , such as GAIA of ESA , SIM of US JPL , DIVA of Germany , FAME of US Naval Observatory and STRUVE of Pulkovo , Russia are described .

叙述了未来10年可能实施的几个空间天体测量计划，如欧洲空间局的GAIA、美国喷气推进实验室的SIM、德国的DIVA、美国海军天文台的FAME和俄罗斯普尔科沃天文台的STRUVE等。

In this paper , some analyses have been done to the mean refraction of the wellknown refraction tables of Pulkovo Observatory ( Fifth edition ) .

本文介绍了普尔科沃天文台大气折射表第五版并对表列的平均折射结果进行了一些分析。

A simulative computation has been carried out with list data in the Pulkovo refraction table to find refractivity and parameters of mapping function . It is proved that all the parameters in the corrective model can be obtained by the simulation with measured values of the refraction , and concluded that the form of mapping function is secondary , the accuracy of simulation will be improved with increase of the items of continued fraction .

文章利用普尔科沃大气折射表的表列数据作模拟计算，求解折射率差和映射函数的参数证明，可以用天文大气折射定值作模拟处理，得到折射延迟改正模型中的所有参数，并得出结论：映射函数的形式是次要的，随着项数的增加，都能提高模拟精度。