| 一种改进的恒星相机在轨检校方法 |
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| 引用本文： | 谢俊峰,龚健雅,江万寿.一种改进的恒星相机在轨检校方法[J].测绘科学,2009,34(2). |
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| 作者姓名： | 谢俊峰 龚健雅 江万寿 |
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| 作者单位： | 武汉大学测绘遥感信息工程国家重点实验室,武汉,430079 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 目前利用星对角距进行恒星相机在轨检校时,一般有两种方法,一种是不考虑镜头畸变,只检校相机内方位元素;另一种考虑畸变的影响,先检校相机内方位元素,再用多项式来拟合畸变。本文在利用镜头畸变规律的基础上,将畸变与相机内方位元素一并检校。实验表明,该方法比其他两种方法能更有效的提高相机检校精度。
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| 关 键 词： | 星对角距 恒星相机 在轨检校 内方位元素 镜头畸变 |
An improved on-orbit calibration method for stellar camera |
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| XIE Jun-feng,GONG Jian-ya,JIANG Wan-shou.An improved on-orbit calibration method for stellar camera[J].Science of Surveying and Mapping,2009,34(2). |
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| Authors: | XIE Jun-feng GONG Jian-ya JIANG Wan-shou |
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| Abstract: | For the on-orbit calibration method for stellar camera based on angular distance, only the interior orientation elements are calibrated without regard to the lens distortion, or the lens distortion is fitted by the generic polynomial even though considered. Both of them may cause the calibration precision dropped. In this paper, the regularity of lens distortion change is analyzed, based on which, the lens distortion and the interior orientation elements are calibrated simultaneously, and the homologous formula is derived. The experiment indicates that the calibration accuracy based on the improved method is high, compared with the current method. |
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| Keywords: | angular distance stellar camera on-orbit calibration interior orientation elements the lens distortion |
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