摘要
介绍了星敏感器的组成及其基本工作原理。在以DSP和CPLD为硬件平台的基础上,采用全局阈值法、连通性分析算法和亚像元细分定位算法对星图数据进行处理,得到星点的坐标信息。提出了一种新的连通性分析算法,与传统的连通性算法相比,节约了星图处理的时间,提高了星点定位的精度。最后用星敏感器对该处理算法进行了试验验证,并取得了较为理想的结果。
The composition and basic principle are introduced.The methods of the threshold,connectivity analysis and the rectangle centroid for the star locating of the star-image are adopted on the basis of the hardware platform constituted by the DSP and CPLD in order to obtain the coordinates of stars.An improved connectivity analysis algorithm is introduced.Compared with traditional connectivity analysis algorithm,it saves the time of processing of star-image,and also improves the accuracy of star locating.Finally,the star sensor has used this method to do experimental verification and satisfied results are obtained.
出处
《测控技术》
CSCD
北大核心
2010年第10期13-15,共3页
Measurement & Control Technology
关键词
星敏感器
连通性分析
星图处理
star sensor
connectivity analysis
star-image procesing
