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  Performance of 1st and 2nd generation SBAS on the GNSS positioning accuracy in Thailand

Thari, P., Intarasuk, N., Fukiatisut, T., Wasuhiranyarith, R., Phichitkarnka, P., Satirapod, C. (2023): Performance of 1st and 2nd generation SBAS on the GNSS positioning accuracy in Thailand, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0044

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Item Permalink: https://gfzpublic.gfz.de/pubman/item/item_5017051 Version Permalink: https://gfzpublic.gfz.de/pubman/item/item_5017051_1
Genre: Conference Paper

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 Creators:
Thari, Phunsap1, Author
Intarasuk, Natapong1, Author
Fukiatisut, Thotsawat1, Author
Wasuhiranyarith, Rattawat1, Author
Phichitkarnka, Pramin1, Author
Satirapod, Chalermchon1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: This research aims to evaluate the performance of existing 1st and 2nd generation SBASs over Thailand region. In this study, a total of 40 GNSS Continuously Operating Reference Stations (CORS) in Thailand was analyzed with a 6-months period of data span. Preliminary results show that the positioning accuracy obtained from the single point positioning (SPP) technique are 1.90 m and 5.22 m in horizontal and vertical components (at 95% confidence level). With the GAGAN 1st generation correction, the positioning accuracy are 2.12 m and 2.43 m in horizontal and vertical components. As for the BDSBAS 1st generation correction, the positioning accuracy are 2.96 m and 4.38 m in horizontal and vertical components. In addition, the horizontal and vertical positioning accuracy obtained from the SPP with an ionosphere-free combination are 1.19 m and 2.74 m, while the horizontal and vertical positioning accuracy obtained from BDSBAS 2nd generation correction are 2.25 m and 4.22 m. Therefore, there are no significant improvements in both vertical and horizontal positioning accuracy by applying SBASs in Thai region. These degraded results are mainly due to the fact that common satellites of SBAS’s provider have rapidly decreased outside of their ground tracking network. However, if the 2nd generation Dual-Frequency Multi Constellation (DFMC) SBAS is implemented in Thai region using local ground tracking network, the positioning results are expected to be significantly improved. Many high accuracy applications such as air, land and sea navigations could be benefited from the implementation of 2nd generation SBAS in Thai region.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-0044
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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