MAPPING 3D IONOSPHERIC PROFILES USINGGROUND-BASED GPS MEASUREMENTS
Jin Shuanggen 1,2) ; and Zhu Wenyao 2)
1)Korea Astronomy and Space Science Institute, Daejeon 305-348, South Korea 2)Shanghai Astronomical Observatory, CAS, Shanghai 200030
Abstract Groundbased dualfrequency GPS receiver has been widely used to monitor the ionosphere and its related abnormal activities. In the past time, however, it was often used by establishing a 2D groundbased GPS ionospheric grid model, which ignores the vertical ionospheric information taken as a constant. 3D ionospheric electron density profile is obtained through a Multiplicative Algebraic Reconstruction Technique (MART) using groundbased GPS measuremnts. Comparied with the International Reference Ionosphere2001 (IRI2001) and ionosonde, the ionospheric electron density profiles derived from ground-based GPS tomography are almost consistent, but much closer to that obtained by ionosonde. Therefore, the groundbased GPS with high timespace resolutions plays an important role in monitoring 3D ionopsheric activities and related space weather.\
Key words ：
GPS
total electron content (TEC)
tomography
MART(Multiplicative Algebraic Reconstruction Technique)
IRI2001(International Reference Ionosphere-2001 )
Received: 01 January 1900
Corresponding Authors:
Jin Shuanggen
Cite this article:
Jin Shuanggen,and Zhu Wenyao . MAPPING 3D IONOSPHERIC PROFILES USINGGROUND-BASED GPS MEASUREMENTS[J]. , 2007, 27(5): 49-53.
Jin Shuanggen,and Zhu Wenyao . MAPPING 3D IONOSPHERIC PROFILES USINGGROUND-BASED GPS MEASUREMENTS[J]. jgg, 2007, 27(5): 49-53.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I5/49
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