Title :
A new function-based computerized ionospheric tomography algorithm
Author :
Ming Ou ; Li Chen ; Xiao Yu ; Weimin Zhen
Author_Institution :
Sch. of Electron. Inf., Wuhan Univ., Wuhan, China
Abstract :
A new function-based computerized ionospheric tomography (CIT) algorithm for beacon measurements from satellite is proposed in this paper. It employs relative TEC measurements as input source data, and spherical harmonic function (SHF) and empirical orthogonal functions (EOF) as the basis function to represent spatial and temporal variation of ionosphere. Truncated singular value decomposition (TSVD) regularization is proposed for solving the ill-posed matrix inversion problem. The accuracy and reliability of this algorithm has been verified by simulated results.
Keywords :
computerised tomography; ionospheric techniques; matrix inversion; singular value decomposition; total electron content (atmosphere); TEC measurements; beacon measurements; empirical orthogonal functions; function-based computerized ionospheric tomography algorithm; input source data; matrix inversion; satellite; spherical harmonic function; truncated singular value decomposition regularization; Image reconstruction; Ionosphere; Matrix decomposition; Receivers; Satellite broadcasting; Satellites; Tomography;
Conference_Titel :
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI
Conference_Location :
Beijing
DOI :
10.1109/URSIGASS.2014.6929788
