Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications
Online ISSN : 2188-4749
Print ISSN : 2188-4730
The 47th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (Dec. 2015, Honolulu)
Studies on Spherical Cap Harmonic Analysis for Japanese Regional Ionospheric Delays and its Prediction
Masaharu OhashiYutaro SatoAkihiro YamadaYukihiro KuboSueo Sugimoto
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2016 Volume 2016 Pages 320-325

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Abstract

In this paper, we present the regional ionospheric delay models for Global Navigation Satellite System (GNSS). An ionospheric delay is a dominant error on GNSS positioning. Then, an ionospheric delay should be corrected for a high positioning accuracy. In this study, the methods to develop the ionospheric delay models are proposed. Ionospheric delays can be measured by the geometry-free combination of the GNSS regression (GR) models of dual frequency bands. An ionospheric delay is proportional to total electron content (TEC) and then a vertical component of TEC (VTEC) is modeled. The VTEC models have been developed based on spherical cap harmonic analysis (SCHA) by using GNSS earth observation network (GEONET) data. The GEONET data are observed only in Japanese region and provided by the Geospatial Information Authority of Japan (GSI). We also investigate the prediction of ionospheric delays with the post-processing models developed by the SCHA. We propose the prediction methods by periodic autoregressive (PAR) models.

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© 2016 ISCIE Symposium on Stochastic Systems Theory and Its Applications
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