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Time‐varying reconstruction of the ionosphere. 1. The algorithm
Author(s) -
Sutton Eric,
Na Helen
Publication year - 1998
Publication title -
international journal of imaging systems and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1098-1098
pISSN - 0899-9457
DOI - 10.1002/(sici)1098-1098(1998)9:6<484::aid-ima10>3.0.co;2-3
Subject(s) - ionosphere , a priori and a posteriori , algorithm , computer science , motion (physics) , electron density , total electron content , iterative reconstruction , electron , computer vision , geology , geophysics , physics , philosophy , epistemology , quantum mechanics , tec
Total electron content data can be used to reconstruct images of ionospheric electron density using computed ionospheric tomography (CIT). All existing CIT algorithms are formulated with the assumption that the ionosphere does not move during data collection. Since existing algorithms are static reconstruction algorithms, the motion of the ionosphere becomes a source of image degradation. This article presents a time‐varying CIT algorithm that reconstructs several time slices of the ionosphere instead of a single static image. Thus, the new algorithm is not adversely affected by the motion of the ionosphere. The new algorithm uses a priori information on the vertical distribution of ionospheric electron density, but no a priori information on ionospheric motion, so the motion is reconstructed solely on the basis of information contained in the data. © 1998 John Wiley & Sons, Inc. Int J Imaging Syst Technol 9: 484–490, 1998