LAMOST光纤定位子系统干涉消除方法的初步研究

针对LAMOST光纤定位系统中期试验机构（由19个单元组成）在运行过程中出现的单元之间干涉现象，提出了一种消除干涉和观测星像方法。该方法根据星像的分布特点，通过星像分配、预处理减少机械干涉的发生概率，然后干涉检测、干涉处理以消除干涉，获得星像点的观测顺序及各单元的运行线路，确保观测过程中不会出现单元之间的机械干涉现象。软件仿真表明，该方案满足子系统需要，可获得较高的观测效率，对以后整个并行光纤观测系统（4000个单元）具有一定的参考价值。

Primary Research of Ways to Avoid Collisions and Observe Images for LAMOST Fiber Positioning Sub-System

A method to avoid collisions for LAMOST sub-syst em (including 19 Units) is briefly introduced. According to this method, proper im age assignment and preparatory processing can decrease the probability of mech anical collisions. Further more, collisions can be detected and eliminated throu gh a retreat algorithm. Finally the ways of allocating images and the running ro utes of all units are obtained. It ensures that there is no mechanical collision during observations and higher observation efficiency can be achieved. Software simulation indicates that the observation planning method can meet the Sub-sys tem's need and it is definitely valuable for the whole parallel controllable opt ical fiber positioning system (including 4,000 Units).