天然卫星CCD精确定位的最新进展

天然卫星CCD精确定位观测对于宇宙飞船探测外行星、行星物理的研究以及天文参考系的连接等方面都有重要的意义．文章介绍了长焦距望远镜CCD观测天然卫星所遇到的各种困难以及解决问题的方案．重点评介了CCD图像处理和归算方法．最后，介绍了影响天然卫星位置测量精度的各种因素及最新观测结果的精度．

New Progress in the CCD Astrometric Observation of Natural Satellites

CCD astrometric observation of natral satellites is important for the spacecraft probation of the outer planets, the planetary physics, and the link between different astronomical reference systems. In this paper, we introduce the difficulties on CCD observation of natural satellites by the long focus telescope and different solving methods and mainly review and discribe the CCD image processing and reducing methods. At last, some factors affecting the accuracy of the positional determination of natural satellites and the accuracy of the newest results are also introduced.