TY - JOUR
T1 - Medium-scale traveling ionospheric disturbances by three-dimensional ionospheric GPS tomography 3. Space science
AU - Chen, C. H.
AU - Saito, A.
AU - Lin, C. H.
AU - Yamamoto, M.
AU - Suzuki, S.
AU - Seemala, G. K.
N1 - Funding Information:
The GPS-TEC data are provided by the Geospatial Information Authority in Japan (GEONET, http://www.gsi.go.jp/ENGLISH/index.html ). This paper is supported by Ministry of Science and Technology (MOST) and National Space Organization (NSPO) of Taiwan to National Cheng Kung University under MOST-103-2111-M-006-001-MY2 and NSPO-S-102132.
Publisher Copyright:
© 2016 Chen et al.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - In this study, we develop a three-dimensional ionospheric tomography with the ground-based global position system (GPS) total electron content observations. Because of the geometric limitation of GPS observation path, it is difficult to solve the ill-posed inverse problem for the ionospheric electron density. Different from methods given by pervious studies, we consider an algorithm combining the least-square method with a constraint condition, in which the gradient of electron density tends to be smooth in the horizontal direction and steep in the vicinity of the ionospheric F2 peak. This algorithm is designed to be independent of any ionospheric or plasmaspheric electron density models as the initial condition. An observation system simulation experiment method is applied to evaluate the performance of the GPS ionospheric tomography in detecting ionospheric electron density perturbation at the scale size of around 200 km in wavelength, such as the medium-scale traveling ionospheric disturbances.
AB - In this study, we develop a three-dimensional ionospheric tomography with the ground-based global position system (GPS) total electron content observations. Because of the geometric limitation of GPS observation path, it is difficult to solve the ill-posed inverse problem for the ionospheric electron density. Different from methods given by pervious studies, we consider an algorithm combining the least-square method with a constraint condition, in which the gradient of electron density tends to be smooth in the horizontal direction and steep in the vicinity of the ionospheric F2 peak. This algorithm is designed to be independent of any ionospheric or plasmaspheric electron density models as the initial condition. An observation system simulation experiment method is applied to evaluate the performance of the GPS ionospheric tomography in detecting ionospheric electron density perturbation at the scale size of around 200 km in wavelength, such as the medium-scale traveling ionospheric disturbances.
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U2 - 10.1186/s40623-016-0412-6
DO - 10.1186/s40623-016-0412-6
M3 - Article
AN - SCOPUS:84959368930
SN - 1343-8832
VL - 68
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 1
M1 - 32
ER -