| 压缩感知与最小二乘联合的卫星姿态抖动估计 |
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| 引用本文： | 马超,邓新蒲,杨俊刚,汪璞,陈军. 压缩感知与最小二乘联合的卫星姿态抖动估计[J]. 航天电子对抗, 2014, 0(4): 18-21 |
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| 作者姓名： | 马超 邓新蒲 杨俊刚 汪璞 陈军 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙410073 |
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| 摘 要： | 卫星在轨运行时姿态存在一定频率的抖动,目前的星敏感器和陀螺等测量仪器受限于测量频率,无法直接测量高频抖动。提出了一种压缩感知和最小二乘相结合的卫星姿态抖动估计方法。根据姿态抖动中的频率稀疏信息,通过压缩感知方法从姿态欠采样数据中恢复出抖动频率,进一步利用最小二乘方法,精确估计出卫星姿态的高频抖动。与单纯采用压缩感知方法或最小二乘方法相比,该方法提高了卫星姿态抖动的估计精度。
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| 关 键 词： | 卫星姿态 抖动 压缩感知(CS) 最小二乘 |
An estimation method of satellite attitude jitter based on CS and least-square |
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| Ma Chao,Deng Xinpu,Yang Jungang,Wang Pu,Chen Jun. An estimation method of satellite attitude jitter based on CS and least-square[J]. Aerospace Electronic Warfare, 2014, 0(4): 18-21 |
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| Authors: | Ma Chao Deng Xinpu Yang Jungang Wang Pu Chen Jun |
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| Affiliation: | (College of Electronic Science and Engineering,National University of Defense Technology, Changsha 410073, Hunan, China) |
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| Abstract: | A novel method based on CS and least-square method is proposed to estimate the satellite attitude jitters with certain frequencies that instruments such as star-sensor and gyro cannot measure directly,limited by the current technological level.Firstly,according to the sparse information of satellite attitude jitter frequencies,jitter frequencies are obtained precisely with the under-sampled data using CS,and further satellite attitude is estimated accurately with these frequencies by least-square method.Compared with traditional CS or least-square method,the one proposed can improve the estimation accuracy of satellite attitude in condition of complex satellite jittering. |
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| Keywords: | satellite attitude jitter compressed sensing least-square |
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