一种适用于星敏感器的星点提取方法

Method adapting to the star sensor′s star extraction

介绍了一种用于星敏感器数字图像处理系统的星点提取方法:首先简要介绍了基于DSP TMS320F206和CPLD 1048C的电路设计,然后主要介绍了DSP对数字图像进行阈值分割、连通性分析和内插细分定位处理并最终得到星点的坐标信息。同时,还提出了一种改进的连通性分析算法。最后,在完成星敏感器样机的设计后进行了试验,试验结果表明,改进后的连通性分析算法能够提高图像处理的效率,同时也表明本文采用的星点提取方法具有较高的精度。

The article introduced a way to accomplish the star sensor＇s star extraction. First we designed the circuit system based on the DSP TMS320F206 and CPLD 1048C. Then mainly introduced the digital image processing,which included the threshold methord, connectivity analysis and the interpolation algorithm. At mean tithe, another improved connectivity analysis was introduced. In the end, with finishing the starsensor sample, we did a lot simulate experiments. The results proved that the new connectivity analysis method could improve the digital image procession efficiently and the star extraction method had high accuracy.