Open AccessImprove Spatiotemporal Kriging with Magnitude and Direction Information in Variogram Construction
Author(s) -
Chen Dingxin,
Liu Daizhi,
Li Yihong,
Meng Liang,
Yang Xiaojun
Publication year - 2016
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2016.05.019
Subject(s) - variogram , magnitude (astronomy) , kriging , geology , statistics , computer science , mathematics , soil science , environmental science , physics , astronomy
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.