一种改进的凸多边形星图识别算法  

Star pattern identification based on a modified convex polygon algorithm

作　　者：马涛[1] 刘朝山[1] 肖松[1] 

机构地区：[1]第二炮兵工程学院物理室,西安710025

出　　处：《光学技术》2008年第S1期229-230,共2页Optical Technique

摘　　要：提出一种在不依赖于星等的凸多边形算法基础上构造的三角形算法。将像平面上的恒星依据坐标排序生成具有唯一性的凸多边形,以三角形的边角边作为识别特征,按照顶角排序后删除重复的角度和角距来拟和曲线,可以加快搜索查询匹配速度,进而识别出视场中恒星在赤道坐标系中的坐标,识别速度较快,具有较强的鲁棒性。A triangle algorithm based on convex polygon with star magnitudes-independed is presented.According to their coordinates' sequence,a unique convex polygon can be obtained using an algorithm of generating convex polygon with the star points on a plane,using the vertex angular and two sides of the triangle as the feature.Deleting the repeated angular and side impersonating a curve,it can promote the matching rate,and get the the equatorial coordinate of the stars in the FOV(field of view),matching rate is faster and has high robustness.

关 键 词：星敏感器 星图识别 凸多边形 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]