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Earth-tide as parameter of crustal motion correction for SLR station displacement

2007; Geological Society of South Africa; Volume: 110; Issue: 2-3 Linguagem: Inglês

10.2113/gssajg.110.2-3.203

1996-8590

Ludwig Combrinck, Vasyl Suberlak,

Geomagnetism and Paleomagnetism Studies

Research Article| September 01, 2007 Earth-tide as parameter of crustal motion correction for SLR station displacement Ludwig Combrinck; Ludwig Combrinck Space Geodesy Programme, HartRAO, PO. Box 443, Krugersdorp, 1740, South Africa, e-mail:ludwig@hartrao.ac.za; vasyl@hartrao.ac.za Search for other works by this author on: GSW Google Scholar Vasyl Suberlak Vasyl Suberlak Space Geodesy Programme, HartRAO, PO. Box 443, Krugersdorp, 1740, South Africa, e-mail:ludwig@hartrao.ac.za; vasyl@hartrao.ac.za Search for other works by this author on: GSW Google Scholar Author and Article Information Ludwig Combrinck Space Geodesy Programme, HartRAO, PO. Box 443, Krugersdorp, 1740, South Africa, e-mail:ludwig@hartrao.ac.za; vasyl@hartrao.ac.za Vasyl Suberlak Space Geodesy Programme, HartRAO, PO. Box 443, Krugersdorp, 1740, South Africa, e-mail:ludwig@hartrao.ac.za; vasyl@hartrao.ac.za Publisher: Geological Society of South Africa First Online: 09 Mar 2017 Online ISSN: 1996-8590 Print ISSN: 1012-0750 © 2007 Geological Society of South Africa South African Journal of Geology (2007) 110 (2-3): 203–210. https://doi.org/10.2113/gssajg.110.2-3.203 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Ludwig Combrinck, Vasyl Suberlak; Earth-tide as parameter of crustal motion correction for SLR station displacement. South African Journal of Geology 2007;; 110 (2-3): 203–210. doi: https://doi.org/10.2113/gssajg.110.2-3.203 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySouth African Journal of Geology Search Advanced Search Abstract A new Satellite Laser Ranging (SLR) analysis program is being developed at Hartebeesthoek Radio Astronomy Observatory (HartRAO) that can model satellite orbits with high accuracy utilising advanced modelling and SLR data. We introduce the background to SLR analysis to an interdisciplinary audience and present the results of processing one month of LAGEOS-1 and LAGEOS-2 data in combined and separate solutions. The inclusion of Earth-tide modelling is shown to be necessary to reduce range bias and to minimise observed minus computed (O-C) residuals. The combined solution shows a reduction in range bias when allowance is made for the SLR station displacement vector due to solid Earth-tide and the effect of the Earth-tide on the static gravity field. In order to make the comparison it is necessary to set the a-priori estimation error of unmodelled forces to a low value as it tends to absorb range biases and improve O-C residuals if included as an additional solve-for parameter. A comparison between the SLR station position perturbation resulting from solid Earth-tide and range bias indicates a correlation, which probably results from an overestimate of the Earth-tide vector and indicates that SLR will be able to differentiate between and evaluate different Earth-tide models. These are preliminary results and further improvement is envisaged due to the planned inclusion of additional advanced modelling procedures. Applications of this software will include velocity field determinations for crustal dynamics studies. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.