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Improve Spatiotemporal Kriging with Magnitude and Direction Information in Variogram Construction

机译:利用幅度图和方向信息改进时空克里金法

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摘要

Magnitude information and direction information are utilized to improve the spatiotemporal Kriging method in the step of variogram construction. Basement of spatiotemporal variogram construction is to calculate vector distance between time slices, and space slices. Criterions of vector distance to spatiotemporal variogram construction is discussed, and a new vector distance model considering both magnitude and direction information is proposed. Case study using data from National Network of Geomagnetic Observatories of China is carried out for cross validation. Results illustrate that the proposed model performs better in analyzing in the statistics of Mean absolute error (MAE) and Mean square error (MSE). The accuracy of spatiotemporal Kriging interpolation is improved with such an operation in vector distance.
机译:利用幅度信息和方向信息来改进时变克里金法在变异函数构建步骤中。时空变异函数构建的基础是计算时间片和空间片之间的向量距离。讨论了时空变异函数构造的矢量距离准则,并提出了同时考虑幅度和方向信息的矢量距离模型。使用来自中国国家地磁观测站网络的数据进行了案例研究,以进行交叉验证。结果表明,该模型在平均绝对误差(MAE)和均方误差(MSE)的统计分析中表现更好。通过矢量距离的这种操作,可以提高时空克里格插值的精度。

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