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Collision detection algorithm for MIRADAS
Journal of Astronomical Telescopes, Instruments, and Systems ( IF 2.3 ) Pub Date : 2021-03-01 , DOI: 10.1117/1.jatis.7.1.015003
David Roma 1 , Jose Bosch 1 , Josep Sabater 2 , Jose M. Gomez 1
Affiliation  

Mid-resolution Infrared Astronomical Spectrograph (MIRADAS) is a near-infrared multi-object echelle spectrograph for Gran Telescopio de Canarias. It selects targets from a 5-arc min field of view using up to 12 deployable probe arms with pick-off mirror optics. The focal plane where the probe arms move has a diameter around 250 mm. The specific geometry of the probe arms requires an optimized collision detection algorithm for the determination of the target assignment and the trajectories determination. We present the general polygonal chain intersection algorithm, which is used to detect the possible collisions and avoid them. It is a generalization of the Polygonal Chain Intersection algortihm, allowing to work with vertical segments, providing a solution for the intersection of any class of polygons. Its use has reduced the time required to detect the collisions between 3 and 4 times compared with a naive solution when used in MIRADAS.

中文翻译:

MIRADAS的碰撞检测算法

中分辨率红外天文光谱仪(MIRADAS)是用于加那利群岛格兰望远镜的近红外多目标阶梯光谱仪。它使用多达12个可展开的探头臂和可拾取反射镜光学器件,从5弧分最小视场中选择目标。探针臂移动的焦平面的直径约为250毫米。探针臂的特定几何形状需要优化的碰撞检测算法来确定目标分配和确定轨迹。我们提出了通用的多边形链相交算法,该算法用于检测可能的碰撞并避免它们。它是“多边形链相交”算法的通用化,允许与垂直线段一起使用,为任何类别的多边形的相交提供了解决方案。
更新日期:2021-03-02
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