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EVALUATION OF TGM2017 FOR HEIGHT SYSTEM USING GNSS/LEVELING DATA IN THAILAND |
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| รหัสดีโอไอ | |
| Creator | Puttipol Dumrongchai, Nuttanon Duangdee |
| Title | EVALUATION OF TGM2017 FOR HEIGHT SYSTEM USING GNSS/LEVELING DATA IN THAILAND |
| Contributor | - |
| Publisher | TuEngr Group |
| Publication Year | 2562 |
| Journal Title | International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies |
| Journal Vol. | 10 |
| Journal No. | 10 |
| Page no. | 10A10N: 1-10 |
| Keyword | Thailand geoid model, Local geoid model, EGM2008, Kolak-1915, Orthometric heights, Airborne gravimetry, Gravity data. |
| URL Website | http://tuengr.com/Vol10_10.html |
| Website title | ITJEMAST V10(10) 2019 @ TuEngr.com |
| ISSN | 2228-9860 |
| Abstract | The Royal Thai Survey Department released the Thailand geoid model of 2017 (TGM2017) for public uses in 2018. The model contains the latest gravity data sets from the terrestrial and airborne gravimetric survey campaigns across the country from April 2015 through June 2016. TGM2017 has been planned to support the height modernization system through the GNSS continuously operating reference station network of Thailand. In this study, TGM2017 was tested using 100 GNSS heights co-located with orthometric heights, referenced in the national Kolak vertical datum of 1915 (Kolak-1915). The testing results showed a 5-cm root mean square (RMS) with a mean offset of +0.011 m. For comparison purposes, EGM2008's had been tested using the same data set. Compared to these models, TGM2017 has a significant improvement of long- and medium-wavelength contents of the geoid. |
