| 地磁测量数据野值的辨识与剔除 |
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| 引用本文： | 李安梁,郭才发,蔡洪.地磁测量数据野值的辨识与剔除[J].飞行器测控学报,2011(2):89-94. |
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| 作者姓名： | 李安梁 郭才发 蔡洪 |
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| 作者单位： | 国防科技大学航天与材料工程学院; |
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| 摘 要： | 针对地磁测量野值的辨识与剔除方法进行了深入研究。分析了野值辨识与剔除的基本原理,基于孤立型野值和斑点型野值模型分析比较了不同的野值剔除方法。利用地磁场实测信息,优化了野值剔除方法的参数,并从不同角度验证了方法的野值修复效果。仿真结果表明,在观测信息为总强度地磁信息条件下,优化的最小二乘B样条逼近法能够有效地辨识野值,具有较好的野值修复效果。
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| 关 键 词： | 地磁导航 孤立型野值 斑点型野值 最小二乘B样条逼近法 |
Identification and Elimination of Outliers in Geomagnetic Measurement Data |
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| LI Anliang,GUO Caifa,CAI Hong.Identification and Elimination of Outliers in Geomagnetic Measurement Data[J].Journal of Spacecraft TT&C Technology,2011(2):89-94. |
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| Authors: | LI Anliang GUO Caifa CAI Hong |
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| Institution: | LI Anliang,GUO Caifa,CAI Hong(College of Aerospace and Material Engineering,National University of Defense Technology,Changsha,Hunan Province 410073) |
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| Abstract: | The methods for identification and elimination of outliers in geomagnetic measurement data are discussed and the theory of identification and elimination of outliers is analyzed.Based on isolated outlier and spotted outlier models,different methods of outlier identification and elimination are compared.Using experiment data of geomagnetic field,outlier repairing effect of the methods is validated with optimized parameters.The results show that least square B-spline approximation identifies outliers more eff... |
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| Keywords: | Geomagnetic Navigation Isolated Outliers Spotted Outliers Least Square B-Spline Approximation |
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