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ESA UGI (Unified-GNSS-Ionosphere): An open-source software to compute precise ionosphere estimates.
- Source :
-
Advances in Space Research . Jan2021, Vol. 67 Issue 1, p56-65. 10p. - Publication Year :
- 2021
-
Abstract
- Ionospheric estimation is becoming more and more important for the new multifrequency positioning algorithms, since they can help to improve greatly the convergence time for acquiring a good positioning error. In this paper, an open source tool to estimate precise ionospheric estimates is presented, namely ESA UGI (Unified-GNSS-Ionosphere). The presentation is done jointly with a methodology to test ionospheric model using a modified NeQuick to generate synthetic data. The results with different option of the ESA UGI shows that it has a good performance below 1 TECU (Total Electron Content Units) in vTEC (vertical Total Electron Content) RMS (Root Mean Squared) for European networks, around 2 TECU in a well-covered African region and between 1 and 6 TECU globally with this synthetic data. It shows as well the capability of changing between different ionosphere models (voxel, multilayer and spherical harmonics) and configuration options. Finally, a test with uncombined PPP actual data is presented showing that instantaneous convergence below 30 cm in 3D RMS position error are achievable in a well sounded area in Europe. [ABSTRACT FROM AUTHOR]
- Subjects :
- *IONOSPHERE
*ROOT-mean-squares
*SPHERICAL harmonics
*ESTIMATES
Subjects
Details
- Language :
- English
- ISSN :
- 02731177
- Volume :
- 67
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Advances in Space Research
- Publication Type :
- Academic Journal
- Accession number :
- 147650180
- Full Text :
- https://doi.org/10.1016/j.asr.2020.09.011