Adaptive Regularization Method for 3-D GNSS Ionospheric Tomography Based on the U-Curve
Adaptive Regularization Method for 3-D GNSS Ionospheric Tomography Based on the U-Curve
复制标题
基于U曲线的3D GNSS电离层层析成像自适应正则化方法
DOI:
10.1109/tgrs.2020.3022561
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发表时间:
2021-06
影响因子:
8.2
通讯作者:
Gao Xin
中科院分区:
文献类型:
--
作者:
Tang Jun;Gao Xin
Computerized ionospheric tomography is a highly ill-posed inverse problem, and regularization tends to stabilize the problem to provide a unique solution. When a regularization method is used, the choice of an optimal parameter is a key issue. In this article, we propose an adaptive regularization method for 3-D ionospheric tomography based on the U-curve. The proposed approach uses a U-curve method to determine the optimal regularization parameter from Global Navigation Satellite Systems (GNSS) observation data. Comparative case studies are investigated based on GNSS simulated observations and real measurements. The simulation results indicate that the proposed method is superior to the adaptive regularization method based on the L-curve. In addition, we further validate the tomographic results with actual ionosonde station data. The results demonstrate the reliability and superiority of the proposed method compared to traditional methods.
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影响因子:
2.6
作者:
K. Bhuyan;P. Bhuyan
通讯作者:
K. Bhuyan;P. Bhuyan
DOI:
--
发表时间:
1986
期刊:
--
影响因子:
--
作者:
J. Austen;S. Franke;Chung Liu;K. Yeh
通讯作者:
J. Austen;S. Franke;Chung Liu;K. Yeh
DOI:
--
发表时间:
2012-07
期刊:
--
影响因子:
--
作者:
D. Bilitza;G. Tamara
通讯作者:
D. Bilitza;G. Tamara
影响因子:
1.6
作者:
M. M. Alizadeh-M.;H. Schuh;M. Schmidt
通讯作者:
M. M. Alizadeh-M.;H. Schuh;M. Schmidt
影响因子:
1.6
作者:
Garcia, R.;Crespon, F.
通讯作者:
Crespon, F.