AI 中文总结
为满足盖亚卫星高精度轨道测量需求，相关方成立GBOT项目，建立1至2米望远镜网络开展地基光学跟踪，以获取高精度轨道数据支撑盖亚任务。
AI 中文摘要
拥有10亿颗恒星的高精度天体测量卫星盖亚（Gaia）将彻底改变我们对天文学多个领域的认知，范围涵盖太阳系天体到银河系的形成与结构。为完全实现该任务的宏伟目标、消除像像差这类影响，我们必须知道该卫星在拉格朗日点轨道运行时的位置和速度矢量，其精度要高于传统雷达技术所能达到的水平，这促使我们决定对盖亚卫星本身进行地基天体测量观测。为此，地基光学跟踪（Ground Based Optical Tracking，GBOT）项目得以成立，全球范围内建立了一个由1至2米口径望远镜组成的小型网络，旨在每天获得一次精度/准确度达20毫角秒（mas）的测量值。我们将讨论GBOT的所有方面：系统搭建、可行性考量、观测方法的初步测试、合作天文台、数据处理流水线/数据库。
英文摘要
Gaia, the 1 billion star, high precision, astrometric satellite will revolutionise our understanding in many areas of astronomy ranging from bodies in our Solar System to the formation and structure of our Galaxy. To fully achieve the ambitious goals of the mission, and to completely eliminate effects such as aberration, we must know the position and velocity vectors of the spacecraft as it orbits the Lagrange point to an accuracy greater than can be obtained by traditional radar techniques, leading to the decision to conduct astrometric observations of the Gaia satellite itself from the ground. Therefore the Ground Based Optical Tracking (GBOT) project was formed and a small worldwide network using 1-2 m telescopes established in order to obtain one measurement per day of a precision/accuracy of 20 mas. We will discuss all aspects of GBOT, setup, feasibility considerations, preliminary tests of observing methods, partner observatories, the pipeline/database
Comments15 pages, 7 figures, SPIE conference Montreal, 2014
Journal refProceedings of the SPIE, Volume 9149, id. 91490P 15 pp. (2014)
