宇航学报

宇航学报 ›› 2011, Vol. 32 ›› Issue (3): 613-619.doi: 10.3873/j.issn.1000-1328.2011.03.024

• 电子信息 • 上一篇    下一篇

基于并行运算体系结构的星敏感器图像处理算法

毛晓楠, 梁为升, 郑循江   

  1. 上海航天控制工程研究所，上海 200233
  • 收稿日期:2010-01-02 修回日期:2010-12-07 出版日期:2011-03-15 发布日期:2011-03-29
  • 作者简介:1000-1328（2011）03-0613-07
  • 基金资助:
    收稿日期：2010-01-02; 
    修回日期：2010-12-07

A Parallel Computing Architecture Based Image Processing Algorithm for Star Sensor

MAO Xiao-nan, LIANG Wei-sheng, ZHENG Xun-jiang   

  1. Shanghai Institute of Aerospace Control Engineering, Shanghai 200233, China
  • Received:2010-01-02 Revised:2010-12-07 Online:2011-03-15 Published:2011-03-29

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摘要： 采用FPGA构建星敏感器图像处理并行计算体系结构。星敏感器图像处理算法由高通滤波、星点提取和星点排序3个模块组成。高通滤波模块基于图像局部加窗计算阈值的方法，星点提取模块采用逐行扫描的计算方法，星点排序模块采用基数排序的计算方法。星敏感器图像处理算法基于四级流水并行计算体系结构，显著提高了星敏感器图像处理的效率和算法的可靠性。

关键词: 星敏感器, 图像处理, 星点提取, 高通滤波, 并行计算, 流水线

Abstract: A FPGA device is adopted to construct parallel computing architecture for star sensor by FPGA. The image processing algorithm of star sensor consists of three modules, high pass filter, star extraction and star sort. The high pass filter module is based on local window threshold computing. The star extraction module is based on image successive scanning. The star sort module is based on radix sorting algorithm. The image processing algorithm for star sensor is based on four\|level pipeline parallel computing architecture. The algorithm improves efficiency and robustness of star sensor image processing remarkably.

Key words: Star sensor, Image processing, Star extracion, High pass filter, Parallel computing, Pipleline

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