New star pattern recognition approach based on Hausdorff distance
-
摘要: 提出了一种新的星图识别方法,这种方法的基本思想是首先从星敏感器中提取全部星图信息,把提取的星图组成一个待识别数据集合B,把全星图参考星库作为一个标准数据集合A,然后,计算2个数据集合A,B之间的相对Hausdorff距离,根据最小相对距离得到待识别星的位置,其中A, B分别由矢量坐标a,b构成.与传统的星光角距识别方法不同,这种方法充分利用了星敏感器中的所有星的空间结构信息,所以,它对各种噪声干扰具有很强的鲁棒性.半物理仿真实验结果表明,在具有强的随机噪声、星图畸变和一定数目的流星干扰情况下,这种方法具有很好的识别效果.
-
关键词:
- 航天器 /
- 天文导航 /
- 星敏感器 /
- Hausdorff距离 /
- 星图识别
Abstract: A new star pattern recognition approach has been devoloped. Its based idea was first extraction the star pattern information, fitting together the information to a pending data set B, putting all star catalog information into a criterion data set A, then computing the relative Hausdorff distance of two sets, here a and b is a vector element of set A and set B. The star was recognised according to the minimum Hausdorff distance. The approach is different from the conventional star pattern recognition approach, which uses the starlight angle-distance method to get the position, it takes the most of the information of star dimensional configuration, therefore, the approach has strong robusticity for the disturbance of noise, distortion, and a few meteor. In the case of random noise,imaging distortion, and a few meteor disturbing, the half physics simulation experimential result indicates that the approach has good recognition effect.-
Key words:
- spacecraft /
- celestial navigation /
- star sensor /
- Hausdorff distance /
- star parttern recognition
-
[1] Carl V L. Accuracy performance of star trackers-A tutorial[J]. IEEE Transactions on Aerospace and Electrinic Systems, 2002, 38(2):587~599 [2] 林 涛,周建林,张钧萍,等. 四边形全天自主星图识别算法[J]. 宇航学报,2000,21(2):82~85 Lin Tao, Zhou Jianlin, Zhang Junping, et al. All-sky automated quaternary star pattern recognition[J]. Journal of Astronautics, 2000,21(2):82~85(in Chinese) [3] 李葆华,张迎春,李化义,等. 用KMP算法进行星敏感器星图识别的方法 . 光电工程, 2004, 31(1):9~11 Li Baohua, Zhang Yingchun, Li Huayi, et al. A star map recognition method of star sensor with KMP algorithm[J]. Opto-Electronic Engineering, 2004, 31(1):9~11(in Chinese) [4] Liebe C C. Pattern recognition of atar constellations for spacecraft applictions[J]. IEEE Aerospace and Electronics Systems Magazine, 1992, 7(6):10~16 [5] 汪亚明. 图像匹配的鲁棒型Hausdorff方法[J]. 计算机辅助设计与图形学学报,2002, 14(3):238~241 Wang Yaming. Image matching based on robust hausdorff distance[J]. Journal of Computer Aideddesign & Computer Graphics, 2002, 14(3):238~241(in Chinese) [6] 沈庭芝,臧铁飞,朱少娟,等. 一种改进的部分Hausdorff距离检测技术和遗传算法在图像匹配识别中的应用[J]. 通信学报,2001,22(12):112~116 Shen Tingzhi,Zang Tiefei,Zhu Shaojuan, et al. One technique of improved Hausdorff distance and genetic algorithm in image matching recognition1[J]. Journal of China Institute of Communications, 2001, 22(12):112~116(in Chinese) -
点击查看大图
计量
- 文章访问数: 514
- HTML全文浏览量: 48
- PDF下载量: 898
- 被引次数: 0
下载:
