Combination of Ground- and Space-Based GPS Data for the Determination of a Multi-scale Regional 4-D Ionosphere Model
Combination of Ground- and Space-Based GPS Data for the Determination of a Multi-scale Regional 4-D Ionosphere Model
复制标题
结合地基和空基 GPS 数据确定多尺度区域 4-D 电离层模型
DOI:
10.1007/1345_2015_25
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Hugentobler
中科院分区:
文献类型:
--
作者:
Limberger;Schmidt;Dettmering;Hugentobler
In this paper, we present a four-dimensional (4-D) electron density model. The vertical distribution of the electron density is described by a F2-layer Chapman function combined with a plasmasphere layer function. The F2-layer peak densityNmF2 and the peak heighthmF2 are spatially and temporally modeled as 3-D series expansions in terms of localized B-spline functions depending on geographical longitude, latitude and time. The corresponding unknown series coefficients are estimated by a linearized model through an appropriate parameter estimation procedure. The input data are ground-based GPS data combined with electron density profiles retrieved from ionospheric GPS radio occultation measurements onboard the FORMOSAT-3/COSMIC, GRACE and CHAMP satellites, in order to compensate the insensitivity of the ground-based GPS data to the height parameterhmF2 as well as benefit from their different spatiotemporal resolutions. We verify our approach by measurements exemplarily over South and Central America for a selected time span during a solar minimum day 2008-07-01. Based on the B-spline method, we demonstrate an effective data compression by applying a multi-scale representation for the estimated coefficients derived from wavelet analysis.
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影响因子:
1.9
作者:
Limberger, M.;Liang, W.;Hugentobler, U.
通讯作者:
Hugentobler, U.
DOI:
10.1137/s1064827598344388
发表时间:
2000
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
T. Lyche;L. Schumaker
通讯作者:
L. Schumaker
DOI:
10.1007/978-3-642-22078-4_18
发表时间:
2009
期刊:
2011 XXXth URSI General Assembly and Scientific Symposium
影响因子:
--
作者:
M. Schmidt
通讯作者:
M. Schmidt
影响因子:
4.9
作者:
L. Sánchez;W. Seemüller;H. Drewes;L. Mateo;G. González;A. Silva;J. Pampillón;W. Martínez;V. Cioce;D. Cisneros;S. Cimbaro
通讯作者:
S. Cimbaro