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Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite

The LARES (LAser RElativity Satellite) was built by the Italian Space Agency (ASI) and launched on 13 February 2012 by the European Space Agency. It is intended for studying the Lense–Thirring effect resulting from general relativity as well as for geodynamic studies and satellite geodesy. The satel...

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Autores principales: Schillak, Stanisław, Lejba, Paweł, Michałek, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865337/
https://www.ncbi.nlm.nih.gov/pubmed/33498598
http://dx.doi.org/10.3390/s21030737
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author Schillak, Stanisław
Lejba, Paweł
Michałek, Piotr
author_facet Schillak, Stanisław
Lejba, Paweł
Michałek, Piotr
author_sort Schillak, Stanisław
collection PubMed
description The LARES (LAser RElativity Satellite) was built by the Italian Space Agency (ASI) and launched on 13 February 2012 by the European Space Agency. It is intended for studying the Lense–Thirring effect resulting from general relativity as well as for geodynamic studies and satellite geodesy. The satellite is observed by most ground laser stations. The task of this work is to determine the station coordinates and to assess the quality of their determination by comparison with the results from the LAGEOS-1 and LAGEOS-2 satellites. Observation results in the form of normal points (396,105 normal points in total) were downloaded from the EUROLAS Data Center for the period from 29 February 2012 to 31 December 2015. Seven-day orbital arcs were computed by the NASA GSFC GEODYN-II software, determining the coordinates of seventeen selected measuring stations. The average Root Mean Square (RMS) (15.1 mm) of the determined orbits is nearly the same as for LAGEOS (15.2 mm). The stability of the coordinates of each station (3DRMS) is from 9 mm to 46 mm (for LAGEOS, from 5 mm to 15 mm) with the uncertainty of determining the coordinates of 3–11 mm (LAGEOS 2–7 mm). The combined positioning for the LARES + LAGEOS-1 + LAGEOS-2 satellites allows for the stability of 5–18 mm with an uncertainty of 2–6 mm. For most stations, this solution is slightly better than the LAGEOS-only one.
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spelling pubmed-78653372021-02-07 Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite Schillak, Stanisław Lejba, Paweł Michałek, Piotr Sensors (Basel) Article The LARES (LAser RElativity Satellite) was built by the Italian Space Agency (ASI) and launched on 13 February 2012 by the European Space Agency. It is intended for studying the Lense–Thirring effect resulting from general relativity as well as for geodynamic studies and satellite geodesy. The satellite is observed by most ground laser stations. The task of this work is to determine the station coordinates and to assess the quality of their determination by comparison with the results from the LAGEOS-1 and LAGEOS-2 satellites. Observation results in the form of normal points (396,105 normal points in total) were downloaded from the EUROLAS Data Center for the period from 29 February 2012 to 31 December 2015. Seven-day orbital arcs were computed by the NASA GSFC GEODYN-II software, determining the coordinates of seventeen selected measuring stations. The average Root Mean Square (RMS) (15.1 mm) of the determined orbits is nearly the same as for LAGEOS (15.2 mm). The stability of the coordinates of each station (3DRMS) is from 9 mm to 46 mm (for LAGEOS, from 5 mm to 15 mm) with the uncertainty of determining the coordinates of 3–11 mm (LAGEOS 2–7 mm). The combined positioning for the LARES + LAGEOS-1 + LAGEOS-2 satellites allows for the stability of 5–18 mm with an uncertainty of 2–6 mm. For most stations, this solution is slightly better than the LAGEOS-only one. MDPI 2021-01-23 /pmc/articles/PMC7865337/ /pubmed/33498598 http://dx.doi.org/10.3390/s21030737 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Schillak, Stanisław
Lejba, Paweł
Michałek, Piotr
Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title_full Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title_fullStr Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title_full_unstemmed Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title_short Analysis of the Quality of SLR Station Coordinates Determined from Laser Ranging to the LARES Satellite
title_sort analysis of the quality of slr station coordinates determined from laser ranging to the lares satellite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865337/
https://www.ncbi.nlm.nih.gov/pubmed/33498598
http://dx.doi.org/10.3390/s21030737
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