New reconstruction and forecasting algorithm for TEC data  

作　　者：王俊 盛峥 江宇 石汉青 

机构地区：[1]National Key Laboratory on Electromagnetic Environmental Effects and Electro-optical Engineering,PLA University of Science and Technology [2]College of Meteorology and Oceangraphy,PLA University of Science and Technology [3]Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science and Technology

出　　处：《Chinese Physics B》2014年第9期602-608,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.41105013,41375028,and 61271106);the National Natural Science Foundation of Jiangsu Province,China(Grant No.BK2011122);the Key Laboratory of Meteorological Observation and Information Processing Scientific Research Fund of Jiangsu Province,China(Grant No.KDXS1205)

摘　　要：To reconstruct the missing data of the total electron content （TEC） observations, a new method is proposed, which is based on the empirical orthogonal functions （EOF） decomposition and the value of eigenvalue itself. It is a self-adaptive EOF decomposition without any prior information needed, and the error of reconstructed data can be estimated. The interval quartering algorithm and cross-validation algorithm are used to compute the optimal number of EOFs for reconstruction. The interval quartering algorithm can reduce the computation time. The application of the data interpolating empirical orthogonal functions （DINEOF） method to the real data have demonstrated that the method can reconstruct the TEC map with high accuracy, which can be employed on the real-time system in the future work.To reconstruct the missing data of the total electron content （TEC） observations, a new method is proposed, which is based on the empirical orthogonal functions （EOF） decomposition and the value of eigenvalue itself. It is a self-adaptive EOF decomposition without any prior information needed, and the error of reconstructed data can be estimated. The interval quartering algorithm and cross-validation algorithm are used to compute the optimal number of EOFs for reconstruction. The interval quartering algorithm can reduce the computation time. The application of the data interpolating empirical orthogonal functions （DINEOF） method to the real data have demonstrated that the method can reconstruct the TEC map with high accuracy, which can be employed on the real-time system in the future work.

关 键 词：RECONSTRUCTION total electron content （TEC） data empirical orthogonal function （EOF） decompo-sition interval quartering algorithm 

分 类 号：P352[天文地球—空间物理学]