Satellite Laser Ranging A Tool to Realize GGOS?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00506418" target="_blank" >RIV/67985815:_____/16:00506418 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/1345_2015_202" target="_blank" >http://dx.doi.org/10.1007/1345_2015_202</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/1345_2015_202" target="_blank" >10.1007/1345_2015_202</a>
Alternative languages
Result language
angličtina
Original language name
Satellite Laser Ranging A Tool to Realize GGOS?
Original language description
Satellite Laser Ranging (SLR) is currently the unique technique to determine station coordinates, Earth Orientation Parameters (EOPs) and Stokes coefficients of the Earth's gravity field from one observation equation with a high accuracy. These parameters form the so-called 'three pillars' (Plag and Pearlman, 2009) of the Global Geodetic Observing System (GGOS). In its function as an official analysis center of the International Laser Ranging Service (ILRS) (Pearlman et al., 2002), DGFI is developing and maintaining software to process SLR observations called 'DGFI Orbit and Geodetic parameter estimation Software' (DOGS). The software is used to analyze SLR observations and to compute multisatellite solutions. In this study, up to 10 satellites (ETALON1/2, LAGEOS1/2, STELLA, STARLETTE, AJISAI, LARETS, LARES and BLITS) with different orbit characteristics (e. g., inclination and altitude) are combined. The relative weighting of the satellites is done using a variance component estimation. The diverse orbits allow to decrease the correlation of parameters such as gravity field coefficients (GFCs) and EOPs. Beside the Earth's gravity field (weekly GFCs with degree and order <= 6 and monthly GFCs with degree and order <= 20) and rotation (terrestrial pole coordinates, UT1-UTC extrapolated with LOD), 3-D station coordinates are estimated weekly or monthly. Different combined solutions are compared to LAGEOS-only solutions. If LARES is combined with LAGEOS1/2, a significant improvement in the GFCs, the EOP and the TRF can be achieved. If more satellites are combined, the variation of the pole coordinates w.r.t. the IERS 08 C04 time series can be reduced up to 56%. Furthermore, systematics in LOD are nearly completely eliminated. The variation of the station coordinates w.r.t. SLRF2008 (http://www.ilrs.gsfc.nasa.gov/science/awg/SLRF2008.html, 2013) can be reduced by about 30%.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10508 - Physical geography
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IAG 150 Years
ISBN
978-3-319-24603-1
ISSN
0939-9585
e-ISSN
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Number of pages
7
Pages from-to
541-547
Publisher name
Springer
Place of publication
Cham
Event location
Potsdam
Event date
Sep 1, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000428775500068