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Electron Density Profiles Derived From Ground-Based GPS Observations

Published online by Cambridge University Press:  23 August 2006

Shuanggen Jin ,
J.U. Park ,
J.L. Wang ,
B.K. Choi  and
P.H. Park
Shuanggen Jin
Affiliation:
Korea Astronomy and Space Science Institute, South Korea Email: sgjin@kasi.re.kr; sg.jin@yahoo.com)
J.U. Park
Affiliation:
Korea Astronomy and Space Science Institute, South Korea
J.L. Wang
Affiliation:
School of Surveying and Spatial Information System, University of New South Wales, Australia
B.K. Choi
Affiliation:
Korea Astronomy and Space Science Institute, South Korea
P.H. Park
Affiliation:
Korea Astronomy and Space Science Institute, South Korea
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Abstract

Nowadays GPS is widely used to monitor the ionosphere. However, the current results from ground-based GPS observations only provide some information on the horizontal structure of the ionosphere, and are extremely restricted in mapping its vertical structure. In this paper, tomography reconstruction technique was used to image 3D ionospheric structure with ground-based GPS. The first result of the 3D images of the ionospheric electron density distribution in South Korea has been generated from the permanent Korean GPS Network (KGN) data. Compared with the profiles obtained by independent ionosondes at or near the GPS receiver stations, the electron density profiles obtained by the GPS tomographic construction method are in better agreement, showing the validity of the GPS ionospheric tomographic reconstruction. It has also indicated that GPS-based 3D ionospheric mapping has the potential to complement other expensive observing techniques in ionospheric mapping, such as ionosondes and radar.

Keywords

Electron densityTomography reconstructionGPS
Type
Research Article
Information
The Journal of Navigation , Volume 59 , Issue 3 , September 2006 , pp. 395 - 401
Copyright
Copyright © The Royal Institute of Navigation 2006

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