抄録
In this paper, the regional ionospheric VTEC models for GNSS (Global Navigation Satellite System) positioning in the local area like as Japan are investigated. The ionosphere is modeled based on VTEC (Vertical Total Electron Content) estimation methods. In order to model regional VTEC distribution from regional data, GEONET (Gnss Earth Observation NETwork) data are used and obtained from the GSI (Geospatial Information Authority of Japan). In our previous research, Least Squares method has been applied. In this paper, we propose the method by applying Kalman Filter. In the experiments, the ionospheric VTEC is modeled by the previous and proposed methods.
