Refined approaches for terrestrial reference frame computations
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| Title: | Refined approaches for terrestrial reference frame computations |
|---|---|
| Authors: | Meisel, B. meisel@dgfi.badw.de, Angermann, D.1, Krügel, M.1, Drewes, H.1, Gerstl, M.1, Kelm, R.1, Müller, H.1, Seemüller, W.1, Tesmer, V.1 |
| Source: | Advances in Space Research. 2005, Vol. 36 Issue 3, p350-357. 8p. |
| Subjects: | Earth movements, Earthquakes, Equations, Natural disasters |
| Abstract: | Abstract: Recent solutions of the terrestrial reference frame such as ITRF2000 are combined from multi-year data sets that contain station positions at a reference epoch and constant velocities. Analysis of time series of station positions of the geodetic space techniques SLR, GPS, VLBI and DORIS show, however, that these techniques allow to detect variations in station position series with up to a few millimetre accuracy. Therefore, the underlying reference frame needs to assure the same accuracy. In this paper we analyse systematic effects in station position and transformation parameter time series that need to be taken into account for future TRF realisations. These are mainly annual signals that show up as common variations of the global networks as well as local effects on individual stations. These annual signals differ significantly from technique to technique for some co-location sites. Apart from periodic signals the time series show discontinuities (e.g. due to earthquakes or instrumentation changes) and periods of non-linear motion (e.g. post-seismic relaxation). We compute TRF technique solutions of five years of epoch normal equations, which allows to adapt the parameterisation in order to account for the effects mentioned above. The accuracy of the technique-specific solutions is evaluated by comparing the results at co-location sites. For this purpose, we transform the VLBI, SLR and DORIS solutions to the GPS solution by using the measured local ties between GPS and the other techniques. [Copyright &y& Elsevier] |
| Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 19035238 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Refined approaches for terrestrial reference frame computations – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Meisel%2C+B%2E%22">Meisel, B.</searchLink><i> meisel@dgfi.badw.de</i><br /><searchLink fieldCode="AR" term="%22Angermann%2C+D%2E%22">Angermann, D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Krügel%2C+M%2E%22">Krügel, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Drewes%2C+H%2E%22">Drewes, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gerstl%2C+M%2E%22">Gerstl, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kelm%2C+R%2E%22">Kelm, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Müller%2C+H%2E%22">Müller, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Seemüller%2C+W%2E%22">Seemüller, W.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tesmer%2C+V%2E%22">Tesmer, V.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Space+Research%22">Advances in Space Research</searchLink>. 2005, Vol. 36 Issue 3, p350-357. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Earth+movements%22">Earth movements</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquakes%22">Earthquakes</searchLink><br /><searchLink fieldCode="DE" term="%22Equations%22">Equations</searchLink><br /><searchLink fieldCode="DE" term="%22Natural+disasters%22">Natural disasters</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Recent solutions of the terrestrial reference frame such as ITRF2000 are combined from multi-year data sets that contain station positions at a reference epoch and constant velocities. Analysis of time series of station positions of the geodetic space techniques SLR, GPS, VLBI and DORIS show, however, that these techniques allow to detect variations in station position series with up to a few millimetre accuracy. Therefore, the underlying reference frame needs to assure the same accuracy. In this paper we analyse systematic effects in station position and transformation parameter time series that need to be taken into account for future TRF realisations. These are mainly annual signals that show up as common variations of the global networks as well as local effects on individual stations. These annual signals differ significantly from technique to technique for some co-location sites. Apart from periodic signals the time series show discontinuities (e.g. due to earthquakes or instrumentation changes) and periods of non-linear motion (e.g. post-seismic relaxation). We compute TRF technique solutions of five years of epoch normal equations, which allows to adapt the parameterisation in order to account for the effects mentioned above. The accuracy of the technique-specific solutions is evaluated by comparing the results at co-location sites. For this purpose, we transform the VLBI, SLR and DORIS solutions to the GPS solution by using the measured local ties between GPS and the other techniques. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.asr.2005.04.057 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 350 Subjects: – SubjectFull: Earth movements Type: general – SubjectFull: Earthquakes Type: general – SubjectFull: Equations Type: general – SubjectFull: Natural disasters Type: general Titles: – TitleFull: Refined approaches for terrestrial reference frame computations Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Meisel, B. – PersonEntity: Name: NameFull: Angermann, D. – PersonEntity: Name: NameFull: Krügel, M. – PersonEntity: Name: NameFull: Drewes, H. – PersonEntity: Name: NameFull: Gerstl, M. – PersonEntity: Name: NameFull: Kelm, R. – PersonEntity: Name: NameFull: Müller, H. – PersonEntity: Name: NameFull: Seemüller, W. – PersonEntity: Name: NameFull: Tesmer, V. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 07 Text: 2005 Type: published Y: 2005 Identifiers: – Type: issn-print Value: 02731177 Numbering: – Type: volume Value: 36 – Type: issue Value: 3 Titles: – TitleFull: Advances in Space Research Type: main |
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