| 一种基于磁强计的卫星自主导航方法研究 |
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| 引用本文： | 荣思远,崔乃刚.一种基于磁强计的卫星自主导航方法研究[J].上海航天,2006,23(3):16-18,60. |
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| 作者姓名： | 荣思远 崔乃刚 |
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| 作者单位： | 哈尔滨工业大学,航天工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 以地磁场强度矢量的模为观测量,将Unscented卡尔曼滤波(UKF)用于近地卫星的磁测自主导航。给出了包括采样点生成、时间更新和量测更新的滤波模型,以及卫星瞬时轨道根数的计算公式。仿真结果表明,UKF滤波方法优于扩展卡尔曼滤波(EKF),精度更高。
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| 关 键 词： | 近地卫星 自主导航 地磁导航 UKF滤波 滤波模型 瞬时轨道根数 滤波精度 |
| 文章编号： | 1006-1630（2006）03-0016-03 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-112005-09-16 |
Algorithm for Satellite Autonomous Navigation Using Magnetometer |
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| RONG Si-yuan,CUI Nai-gang.Algorithm for Satellite Autonomous Navigation Using Magnetometer[J].Aerospace Shanghai,2006,23(3):16-18,60. |
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| Authors: | RONG Si-yuan CUI Nai-gang |
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| Institution: | College of Astronautics Engineering, Harbin Institute of Technology, Harbin Heilonhjiang 150001, China |
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| Abstract: | The unscented Kalman filter(UKF) was applied for geomagnetism autonomous navigation in LEO satellite in this paper when the magnitude of the geomagnetic field vector was served as observed value.The UKF mode of the sampling producing,time update and observation update were given out,and so were computation formula of the satellite instantaneous orbit elements.The simulation results showed that the UKF had higher accuracy,which was better than extended Kalman filter. |
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| Keywords: | LEO satellite Autonomous navigation Geomagnetism navigation Unscented Kalman filter Filtering mode Instantaneous orbit element Filtering accuracy |
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