| 基于克里金插值的局部地磁图的构建 |
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| 引用本文： | 张晓明,赵剡.基于克里金插值的局部地磁图的构建[J].电子测量技术,2009,32(4). |
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| 作者姓名： | 张晓明 赵剡 |
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| 作者单位： | 1. 中北大学电子与计算机科学技术学院,太原,030051
2. 北京航空航天大学仪器科学与光电工程学院,北京,100191 |
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| 摘 要： | 高精度小比例尺的地磁图的准确获取是实现高精度地磁导航的关键.本文论述了克里金插值理论能较好地描述地磁场的结构分量,为地磁场的构建提供了理论基础,并提出了一种基于克里金插值的局部地磁图的构建方法,采用交叉验证的方法将其与其他常用空间插值方法进行了精度评估.结果表明采用克里金插值方法构建的地磁图能够较为准确地反映局部地区地磁信息,为地磁导航技术研究提供了基准.
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| 关 键 词： | 地磁图构建 克里金插值 半方差函数 交叉验证 |
Local geomagnetic field mapping based on kriging interpolation method |
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| Zhang Xiaoming,Zhao Yan.Local geomagnetic field mapping based on kriging interpolation method[J].Electronic Measurement Technology,2009,32(4). |
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| Authors: | Zhang Xiaoming Zhao Yan |
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| Affiliation: | 1.School of Instrument Science and Opto-electronics Engineering;Beijing University of Aeronautics and Astronautics;Beijing 100191;2.School of Electronics and Computer Science and Technology;North University of China;Taiyuan 030051 |
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| Abstract: | The positioning precision in geomagnetic navigation is affected by the accuracy and refinement of local geomagnetic map.It is discussed that the local geomagnetic field can be described by Kriging interpolation model.The step of geomagnetic field mapping using Kriging interpolation method is presented.Finally,several interpolation methods are evaluated by cross validation method in order to compare the relative quality of these interpolation methods.The results show that the geomagnetic map obtained by usin... |
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| Keywords: | geomagnetic field mapping kriging interpolation method semivariance function cross validation |
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