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《Journal of Guangxi Normal University(Natural Science Edition)》 2016-01
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Applications of Spatiotemporal Kriging in Local Geomagnetic Field Analysis

CHEN Dingxin;LIU Daizhi;MENG Liang;LI Yihong;YANG Xiaojun;PLA Rocket Force Engineering University;  
Geomagnetic field has continuity and relativity,and the influence of time characteristics on the analysis precision of geomagnetic field is the aim of this paper.Based on the local geomagnetic field data in Ningxia,China,we use the spatial and temporal Kriging function to carry out interpolation calculation.Spatiotemporal Kriging is the extension of Kriging method in space-time domain,including simulation of conditional variation function,construction of space time variation function,cross validation and so on.According to the experiment results,due to the full use of space-time information,Spatiotemporal Kriging outperforms space-only methods,such as the nearest,V4 and Kriging methods.The reason for improvement of accuracy is analyzed,and the selection of database capacity in the process of spatial and temporal interpolation.is discussed.
【Fund】: 国家自然科学基金资助项目(41374154 61304240);; 中国博士后科学基金资助项目(2014M552589)
【CateGory Index】: P318
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