An improved method using adaptive smoothing for GNSS tomographic imaging of ionosphere.
An improved method using adaptive smoothing for GNSS tomographic imaging of ionosphere.
复制标题
电离层 GNSS 层析成像自适应平滑改进方法
DOI:
10.1371/journal.pone.0250613
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Sun H
中科院分区:
文献类型:
--
作者:
Jia R;Yu X;Xing J;Ning Y;Sun H
Global navigation satellite system (GNSS) is a well-established sensors in the recent ionosphere research. By comparing with classical meteorological equipments, the GNSS application can obtain more reliable and precious ionospheric total electron content (TEC) result. However, the most used GNSS ionospheric tomography technique is sensitive to a priori information due to the sparse and non-uniform distribution of GNSS stations. In this paper, we propose an improved method based on adaptive Laplacian smoothing and algebraic reconstruction technique (ALS-ART). Compared with traditional constant constraints, this method is less dependent on a priori information and adaptive smoothing constraints is closer to the actual situation. Tomography experiments using simulated data show that reconstruction accuracy of ionospheric electron density using ALS-ART method is significantly improved. We also use the method to do the analysis of real observation data and compare the tomography results with ionosonde observation data. The results demonstrate the superiority and reliability of the proposed method compared to traditional constant constraints method which will further improve the capability of obtaining precious ionosphere TEC by using GNSS.
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影响因子:
4.4
作者:
Ciraolo, L.;Azpilicueta, F.;Radicella, S. M.
通讯作者:
Radicella, S. M.
影响因子:
1.6
作者:
Garcia, R.;Crespon, F.
通讯作者:
Crespon, F.
DOI:
10.1002/ima.1850050214
发表时间:
1994-06-01
影响因子:
3.3
作者:
HAJJ, GA;IBANEZMEIER, R;ROMANS, LJ
通讯作者:
ROMANS, LJ
影响因子:
4.9
作者:
Wen, Debao;Liu, Sanzhi;Tang, Pingying
通讯作者:
Tang, Pingying
影响因子:
4.9
作者:
Wen, Debao;Yuan, Yunbin;Zhang, Kefei
通讯作者:
Zhang, Kefei