天然卫星的CCD观测与精准定位关键技术的研究

项目名称： 天然卫星的CCD观测与精准定位关键技术的研究

项目编号： No.11273014

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 彭青玉

作者单位： 暨南大学

项目金额： 90万元

中文摘要： 在国家基金委连续多个项目的支持下，本项目组已有长期天然卫星观测与精确定位测量的经验积累和技术储备,取得了多项创新成果。在此基础上，我们拟继续利用国内光学天文开放实验室的几架大口径望远镜进行系统观测，借鉴哈勃望远镜空间天体测量的最新研究成果，重点开展天然卫星精准定位的切平面成像和测光中若干关键技术的研究。具体地，将深入研究CCD图像几何扭曲的规律性、不同滤光片观测的色差效应，完善CCD图像重迭定标技术，最大限度地提高行星卫星尤其是离行星较远的暗弱卫星的定位精度。同时也开展较亮恒星和主要卫星的高精度相对位置测量，为参考系研究提供重要信息；结合2003和2009年度观测木卫互掩互食的经验，深入开展高精度定位的测光技术及归算方法研究，迎接2015年木卫互掩互食天象的观测。项目的完成不仅对天然卫星的轨道理论和行星物理的研究有着直接的贡献，也对我国正在实施的空间探测、深空导航有着基础性和前瞻性的意义。

中文关键词： 天体测量；天然卫星；图像处理；图像分析；

英文摘要： Under the four project supports from the NSFC, our research group has already accumulated much experiences and developed successfully some key techniques in precisely positional measurements of some planetary natural satellites, leading to several innovative achievements. The present project is expected to continue using several big-aperture optical telescopes at the domestic optical astronomy laboratory to take observations systematically of some natural satellites (such as Jovian satellites, Saturnian satellites and others). And we plan to study mainly some other key techniques in both imaging at the tangent plane by referencing the latest achievements in space astrometry of the Hubble Space Telescope, and photometry. Specifically, the rules of the geometric distortion for a telescope,the differential color effects from different filters will be studied deeply. And the calibration technique by CCD image overlapping will be refined further, with the increasing of positional precision in great degree for planetary satellites, especially for the great separation faint satellites (such as Iapetus, and Phoebe) from their primary planet. Besides, some important information on different reference systems will be derived by taking CCD observations for a bright star (such as a Hipparcos star) with respect to some plane

英文关键词： astrometry；natural satellites；image-processing；image-analysis；