依巴谷卫星资料处理中的参考架

本文从依巴谷卫星扫描观测原理出发,给出对日参考架、扫描大圆参考架和望远镜参考架的明确定义;指出FAST和NDAC两个卫星资料处理中心之间所用参考架的差异;并选择50颗全天均匀分布的恒星进行了模拟计算,讨论了欧洲空间局利用两个资料处理中心的意义。

THE REFERENCE FRAMES IN THE DATA REDUCTION OFHIPPARCOS SATELLITE

The heliotropic, great-circle and Hipparcos telescope reference frames are explicitly defined in the light of the scanning law of Hipparcos satellite. The differences between the reference frames adopted by the two data reduction consortia, FAST and NDAC, are presented. The abscissas and ordinates of 50 stars in the FAST and NDAC great-circle reference frame are simulated and the reason for using two data reduction consortia in ESA are discussed.