| 提高星图正确匹配率的新方法 |
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| 引用本文： | 刘美莹,汶德胜,冉晓强.提高星图正确匹配率的新方法[J].电光与控制,2009,16(9). |
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| 作者姓名： | 刘美莹 汶德胜 冉晓强 |
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| 作者单位： | 1. 中国科学院西安光学精密机械研究所,西安,710119;中国科学院研究生院,北京,100039
2. 中国科学院西安光学精密机械研究所,西安,710119 |
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| 基金项目： | 国家自然科学基金(60532070) |
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| 摘 要： | 在CCD星敏感器中,快速而可靠的星图识别算法成为星敏感器确定姿态的最关键部分。针对星图识别中误匹配点的存在,提出了一种新的剔除误匹配点的方法—累积偏差法,选取合适的判定阈值对实验数据进行筛选,并结合最小二乘曲面拟合法对实验数据进行误差分析,实验结果表明,采用此方法,可以很好地剔除星图识别中的误匹配点,在赤经(α)和赤纬(δ)方向拟合偏差平均值可达到5.267 2,″星图正确匹配概率大大提高。
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| 关 键 词： | 星敏感器 星图识别 曲面拟合 误差分析 |
A New Method for Improving Star Map Right-Matching |
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| LIU Meiying,WEN Desheng,RAN Xiaoqiang.A New Method for Improving Star Map Right-Matching[J].Electronics Optics & Control,2009,16(9). |
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| Authors: | LIU Meiying WEN Desheng RAN Xiaoqiang |
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| Affiliation: | 1.Xi'an Institute of Optics and Precision Mechanics;Chinese Academy of Sciences;Xi'an710119;China;2.Graduate University of Chinese Academy of Sciences;Beijing100039;China |
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| Abstract: | For star sensors in CCD,a fast and reliable star map identification algorithm is the most critical part for determining star sensor attitude.Since mismatching is existed in star map identification,a new method,cumulative departure method,was proposed to eliminate the mismatching points.The appropriate value was selected to filtrate the experimental data,and the error of the experiment data was analyzed with the least square surface fitting method.The experimental results showed that the mistaken matching po... |
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| Keywords: | star sensors star map recognition surface fitting error analysis |
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