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Kriengkrai Boonterm. Precision coordinate transformations for Thai national geodetic infrastructure. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2023.
Precision coordinate transformations for Thai national geodetic infrastructure
Name: Korakod Butwong
Organization :
Royal Thai Survey Department. Geodesy and Geophysics Division
Email :
korakod.b@rtarf.mi.th
Name: Thayathip Thongtan
Organization :
National Institute of Metrology. Electrical Metrology Department
Email :
thayathip@nimt.or.th
Name: Kriengkrai Boonterm
Organization :
Royal Thai Survey Department. Geodesy and Geophysics Division
Email :
kriengkrai.b@rtarf.mi.th
keyword:
Geodetic reference systems
LCSH:
Geodesy
Abstract:
Ground station receivers or network locations use different geodetic datums. A geodetic datum defines the size and shape of the Earth model and the origin and orientation of coordinate systems used to map the Earth. These datums are modified to converge with the International Terrestrial Reference Frame (ITRF). The Thailand geodetic reference frame has been maintained by the Royal Thai Survey Department (RTSD) and is currently based on GNSS permanent networks.
Precise orbit and clock solutions, Earth orientation parameters, and tropospheric gradients are applied as fixed parameters to estimate station positions using a network approach in which all station coordinates are simultaneously adjusted, defined as a zero-order network. These coordinates are determined with respect to ITRF with centimetre-level precision and accuracy. The shape of the Earth varies over time due to oceanic tides and plate movements. Changes occur more gradually when earthquakes and volcanic eruptions happen. ITRF and other geodetic datums change continually; therefore, frame transformations are required.
The latest adjusted coordinates are based on ITRF2005, ITRF2008, and ITRF2014 frames, and velocities are set at epochs 2008.83, 2013.81, and 2021.93, respectively. Constraints are cast in the form of transformation parameters. The grid shift is then generated to transform from global coordinate systems to local geocentric reference frames. GNSS measurements obtained from another set of ground stations are used as check coordinates.
The transformed coordinates achieve centimetre-level accuracy both horizontally and vertically at a 95% confidence level. Coordinate transformations can be applied to mapping Thailand based on the one map on one datum policy
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2023
Modified:
2026-05-27
Issued:
2026-05-27
บทความ/Article
application/pdf
BibliograpyCitation :
In Nakhon Phanom University. 2023 20th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON 2023) (pp.356-359). Piscataway, NJ : IEEE
eng
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0.042555 วินาที
Korakod Butwong
| Title | Contributor | Type |
|---|---|---|
| Precision coordinate transformations for Thai national geodetic infrastructure
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Korakod Butwong;Thayathip Thongtan;Kriengkrai Boonterm | บทความ/Article |
Thayathip Thongtan
| Title | Contributor | Type |
|---|---|---|
| Estimation of GNSS receiver internal delay using precise point positioning algorithm
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Natchapan Pothikunkupatarak;Thayathip Thongtan;Chalermchon Satirapod | บทความ/Article | |
| Performance assessments of correction models in GNSS network-based RTK positioning
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Chayanon Laoniphon;Thayathip Thongtan;Chalermchon Satirapod | บทความ/Article | |
| GNSS active control point determinations
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Serm Chinnarat;Thayathip Thongtan;Jittrakorn Bairaksa | บทความ/Article | |
| Real-time and online post-processing kinematic positioning services
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Chaowalit Netthonglang;Thanaphat Jongrukchob;Thayathip Thongtan;Jittrakorn Bairaksa | บทความ/Article | |
| Evaluating the accuracy of web-based maps within automatic web processing services
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Partit Saiyut;Thayathip Thongtan;Jittrakorn Bairaksa | บทความ/Article | |
| Precision coordinate transformations for Thai national geodetic infrastructure
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Korakod Butwong;Thayathip Thongtan;Kriengkrai Boonterm | บทความ/Article |
Kriengkrai Boonterm
| Title | Contributor | Type |
|---|---|---|
| Precision coordinate transformations for Thai national geodetic infrastructure
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Korakod Butwong;Thayathip Thongtan;Kriengkrai Boonterm | บทความ/Article |