本文主要描述依巴谷卫星的光学观测原理，资料处理方法。
In this paper, the observation principle and data reduction method of HIPPARCOS are described.
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；
The heliotropic, great-circle and Hipparcos telescope reference frames are explicitly defined in the light of the scanning law of Hipparcos satellite.
本文分析了依巴谷空间天体测量卫星主探测器析像管和恒星测绘仪的工作缺点；
The defects of main detector, Imange Dissector Tube (IDT), in HIPPARCOS Space Astrometry Satellite are discussed.
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