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针对航天器快速移动时星敏感器所摄取的星空图像出现运动模糊这一问题,提出了一种基于维纳滤波的星图复原方法。分析了各模糊参数对质心提取精度的影响,通过仿真实验得到模糊星图复原前后的质心提取精度和定姿精度的对比数据。实验结果表明,复原后的星图可以显著提高星图的质心提取精度和定姿精度,可有效地提高星图识别的成功率。
In view of the motion blur of the star image taken by the star sensor when the spacecraft moves rapidly, a star image restoration method based on Wiener filter is proposed. The influence of each fuzzy parameter on the accuracy of centroid extraction was analyzed. The comparison data of centroid extraction precision and accuracy of pose and attitude before and after restoration of the fuzzy star chart were obtained by simulation experiment. Experimental results show that the reconstructed star image can significantly improve the centroid extraction accuracy and attitude accuracy of the star image, which can effectively improve the success rate of star image recognition.