Local Models for Ionospheric VTEC Estimation Based on GR Models with Multi-Layer Model

Masaharu Ohashi, Shinichi Otsuki, Nobuhiro Okano, Yukihiro Kubo, and Sueo Sugimoto

Abstract:	In this paper, the multi-layer ionospheric model based regional VTEC estimation methods applied by GNSS Regressive models (abbreviated as GR models) [1]-[6] are presented. In the methods, the spherical cap harmonic analysis (SCHA) as well as the spherical harmonic functions (SHF) are also applied to model the regional VTEC distributions. The ionospheric delays (or advances) over Japan estimated by using Gps Earth Observation NETwork (GEONET) data provided from the Geographical Survey Institute (GSI) of Japan are also shown [7].
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2588 - 2594
Cite this article:	Ohashi, Masaharu, Otsuki, Shinichi, Okano, Nobuhiro, Kubo, Yukihiro, Sugimoto, Sueo, "Local Models for Ionospheric VTEC Estimation Based on GR Models with Multi-Layer Model," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 2588-2594.
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