Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point
A geodetic reference frame is a fundamental element in geoinformation fields such as autonomous navigation and digital twins. The international terrestrial reference frame is established and maintained using several space-geodetic techniques, including very long baseline interferometry (VLBI) and sa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/20/7937 |
| _version_ | 1797469935294742528 |
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| author | Tae-Suk Bae Chang-Ki Hong |
| author_facet | Tae-Suk Bae Chang-Ki Hong |
| author_sort | Tae-Suk Bae |
| collection | DOAJ |
| description | A geodetic reference frame is a fundamental element in geoinformation fields such as autonomous navigation and digital twins. The international terrestrial reference frame is established and maintained using several space-geodetic techniques, including very long baseline interferometry (VLBI) and satellite laser ranging (SLR). For several decades, geodesists have been devoted to connecting these two sensors at a site (local tie). The reference point of the VLBI antenna and SLR telescope, called invariant point (IVP), should be precisely determined to connect these two solutions. We developed an innovative integrated model to estimate the IVP, which is composed of spherical and conical models, depending on the rotational axis. In this model, all target points in 3D spaces were directly connected to the IVP; thus, the stability and robustness of the system were secured. Furthermore, all inherent errors in the coordinates were predicted by applying the total least-squares approach. |
| first_indexed | 2024-03-09T19:30:58Z |
| format | Article |
| id | doaj.art-ae495a8e32054eba91e6c9522eea10cc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T19:30:58Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ae495a8e32054eba91e6c9522eea10cc2023-11-24T02:28:57ZengMDPI AGSensors1424-82202022-10-012220793710.3390/s22207937Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant PointTae-Suk Bae0Chang-Ki Hong1Department Geoinformation Engineering, Sejong University, Seoul 05006, KoreaDepartment Geoinformatics Engineering, Kyungil University, Gyeongsan 38428, KoreaA geodetic reference frame is a fundamental element in geoinformation fields such as autonomous navigation and digital twins. The international terrestrial reference frame is established and maintained using several space-geodetic techniques, including very long baseline interferometry (VLBI) and satellite laser ranging (SLR). For several decades, geodesists have been devoted to connecting these two sensors at a site (local tie). The reference point of the VLBI antenna and SLR telescope, called invariant point (IVP), should be precisely determined to connect these two solutions. We developed an innovative integrated model to estimate the IVP, which is composed of spherical and conical models, depending on the rotational axis. In this model, all target points in 3D spaces were directly connected to the IVP; thus, the stability and robustness of the system were secured. Furthermore, all inherent errors in the coordinates were predicted by applying the total least-squares approach.https://www.mdpi.com/1424-8220/22/20/7937very long baseline interferometryinvariant pointinternational terrestrial reference framelocal tietotal least-squares method |
| spellingShingle | Tae-Suk Bae Chang-Ki Hong Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point Sensors very long baseline interferometry invariant point international terrestrial reference frame local tie total least-squares method |
| title | Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point |
| title_full | Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point |
| title_fullStr | Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point |
| title_full_unstemmed | Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point |
| title_short | Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point |
| title_sort | sphero conical modeling for the estimation of very long baseline interferometry invariant point |
| topic | very long baseline interferometry invariant point international terrestrial reference frame local tie total least-squares method |
| url | https://www.mdpi.com/1424-8220/22/20/7937 |
| work_keys_str_mv | AT taesukbae spheroconicalmodelingfortheestimationofverylongbaselineinterferometryinvariantpoint AT changkihong spheroconicalmodelingfortheestimationofverylongbaselineinterferometryinvariantpoint |