| 比例最小偏度单形采样的UKF及其在卫星定轨中的应用 |
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| 引用本文： | 姜伟南,周海银,段晓君,潘晓刚.比例最小偏度单形采样的UKF及其在卫星定轨中的应用[J].上海航天,2008,25(5). |
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| 作者姓名： | 姜伟南 周海银 段晓君 潘晓刚 |
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| 作者单位： | 国防科学技术大学,理学院,湖南,长沙,410073 |
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| 基金项目： | 航天支撑技术基金，国家自然科学基金 |
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| 摘 要： | 基于Unscented变换(UT),在最小偏度单形采样策略中使用比例修正算法,提出了一种比例最小偏度单形采样的Unscented卡尔曼滤波(UKF)算法,用于基于地基观测的低轨卫星实时定轨.仿真结果表明:比例最小偏度单形采样UKF的精度与比例对称采样UKF相当,但计算效率至少可提高三分之一.
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| 关 键 词： | Unscented卡尔曼滤波 单形采样 最小偏度 低轨卫星 实时定轨 |
UKF with Scaled Minimal Skew Simplex Sampling and Its Application in Satellite Orbit Determination |
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| JIANG Wei-nan,ZHOU Hai-yin,DUAN Xiao-jun,PAN Xiao-gang.UKF with Scaled Minimal Skew Simplex Sampling and Its Application in Satellite Orbit Determination[J].Aerospace Shanghai,2008,25(5). |
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| Authors: | JIANG Wei-nan ZHOU Hai-yin DUAN Xiao-jun PAN Xiao-gang |
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| Institution: | JIANG Wei-nan,ZHOU Hai-yin,DUAN Xiao-jun,PAN Xiao-gang(College of Science,NUDT,Changsha Hunan 410073,China) |
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| Abstract: | The scaled minimal skew simplex sampling unscented Kalman filtering was proposed based on unscented transform while scaling algorithm was applied to the minimal skew simplex sampling strategy in this paper,which was used for the earth-based real-time orbit determination for low orbit satellite.The simulation results showed that the precision of orbit determination by this method was similar with that of UKF with the scaled symmetric sampling,but saving at the least one thirds computation time. |
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| Keywords: | Unscented Kalman filter Simplex sampling Minimal skew Low orbit satellite Real-time orbit(determination) |
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