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http://dx.doi.org/10.7780/kjrs.2009.25.5.391

Analysis of Ionospheric Spatial Gradient Over Korea Using GPS Measurements  

Jeong, Myeong-Sook (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Kim, Jeong-Rae (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Korean Journal of Remote Sensing / v.25, no.5, 2009 , pp. 391-398 More about this Journal
Abstract
Variations of mean ionospheric spatial gradient over Korea are analyzed in order to support GNSS (Global Navigation Satellite System) augmentation systems and integrity monitering systems. A software for analyzing the ionospheric spatial gradient is developed using an ionospheric plate model. Daily and annual variations of ionospheric delay and spatial gradient are analyzed using GPS data in 2003 and 2005 respectively. The ionospheric delays and spatial gradients in 2003 were larger than 2005. Also, the south-north gradient, about -1.0mm/km, is nearly two times larger than the east-west gradient. The annual ionospheric spatial gradients over Korea is varied within 2mm/km.
Keywords
Ionospheric Delay; Ionospheric Spatial Gradient; Ionospheric Plate Model; South-North Direction; East-West Direction;
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Times Cited By KSCI : 3  (Citation Analysis)
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