http://www.cnr.it/ontology/cnr/individuo/prodotto/ID57219
Imaging of the equatorial ionosphere (Articolo in rivista)
- Type
- Label
- Imaging of the equatorial ionosphere (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
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- Materassi M., Mitchell C.N. (literal)
- Pagina inizio
- Pagina fine
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- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Istituto Nazionale di Geofisica e Vulcanologia. (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1) Istituto dei Sistemi Complessi, CNR, Sesto Fiorentino (FI), Italy
2) Department of Electrical and Electronic Engineering, University of Bath, U.K. (literal)
- Titolo
- Imaging of the equatorial ionosphere (literal)
- Abstract
- The equatorial anomaly is the dominant structure in free electron concentration in the tropical ionosphere. Due to its edges (crests) which are characterised by steep, latitudinal gradients in TEC and are temporally and spatially variable, it is one of the ionospheric regions most difficult to image with inversion methods. In this paper we reconstruct an International Reference Ionosphere model of the equatorial ionosphere by employing a grid of virtual ground GPS receivers and actual GPS satellite positions. The MIDAS algorithm, an inversion method for reconstructing the ionosphere as a linear composition of given empirical orthogonal functions, is used. Comparing the true model ionosphere with the resulting images a fine tuning of the basis functions (vertical profile contraints) in the inversion is realised. (literal)
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