Determination of resonant geopotential terms using optical observations of geostationary satellites

U. Hugentobler; M. Ploner; T. Schildknecht; G. Beutler

doi:10.1016/S0273-1177(99)00153-2

Determination of resonant geopotential terms using optical observations of geostationary satellites

U. Hugentobler, M. Ploner, T. Schildknecht, G. Beutler

University of Bern

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The ellipticity of the Earth's equator causes a resonant librational motion of geostationary satellites. Combining astrometric observations of Meteosat satellites from Zimmerwald (Switzerland) and Graz-Lustbuhel (Austria), the resonant geopotential terms C ₂₂ and S ₂₂ were determined. The accuracy of the parameters provided by the limited campaign is close to that achieved in JGM-3. The comparatively simple observation and reduction technique offers a useful alternative method to monitor the values of the resonant geopotential terms C ₂₂ and S ₂₂ in order to determine possible time variations or to assess upper limits for variations.

Original language	English
Pages (from-to)	767-770
Number of pages	4
Journal	Advances in Space Research
Volume	23
Issue number	4
DOIs	https://doi.org/10.1016/S0273-1177(99)00153-2
State	Published - 1999
Externally published	Yes

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title = "Determination of resonant geopotential terms using optical observations of geostationary satellites",

abstract = " The ellipticity of the Earth's equator causes a resonant librational motion of geostationary satellites. Combining astrometric observations of Meteosat satellites from Zimmerwald (Switzerland) and Graz-Lustbuhel (Austria), the resonant geopotential terms C 22 and S 22 were determined. The accuracy of the parameters provided by the limited campaign is close to that achieved in JGM-3. The comparatively simple observation and reduction technique offers a useful alternative method to monitor the values of the resonant geopotential terms C 22 and S 22 in order to determine possible time variations or to assess upper limits for variations. ",

author = "U. Hugentobler and M. Ploner and T. Schildknecht and G. Beutler",

note = "Funding Information: We thankJ . Klok\textasciitilde{}nik for fruitful discussionsa t Ondfejov observatorya nd G. Ferrand for providing technicali nfor-mation aboutt he Meteosats atellites.The work was partially funded by the Swiss National Science Foundation and the National Bank of Austria.",

year = "1999",

doi = "10.1016/S0273-1177(99)00153-2",

language = "English",

volume = "23",

pages = "767--770",

journal = "Advances in Space Research",

issn = "0273-1177",

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TY - JOUR

T1 - Determination of resonant geopotential terms using optical observations of geostationary satellites

AU - Hugentobler, U.

AU - Ploner, M.

AU - Schildknecht, T.

AU - Beutler, G.

N1 - Funding Information: We thankJ . Klok~nik for fruitful discussionsa t Ondfejov observatorya nd G. Ferrand for providing technicali nfor-mation aboutt he Meteosats atellites.The work was partially funded by the Swiss National Science Foundation and the National Bank of Austria.

PY - 1999

Y1 - 1999

N2 - The ellipticity of the Earth's equator causes a resonant librational motion of geostationary satellites. Combining astrometric observations of Meteosat satellites from Zimmerwald (Switzerland) and Graz-Lustbuhel (Austria), the resonant geopotential terms C 22 and S 22 were determined. The accuracy of the parameters provided by the limited campaign is close to that achieved in JGM-3. The comparatively simple observation and reduction technique offers a useful alternative method to monitor the values of the resonant geopotential terms C 22 and S 22 in order to determine possible time variations or to assess upper limits for variations.

AB - The ellipticity of the Earth's equator causes a resonant librational motion of geostationary satellites. Combining astrometric observations of Meteosat satellites from Zimmerwald (Switzerland) and Graz-Lustbuhel (Austria), the resonant geopotential terms C 22 and S 22 were determined. The accuracy of the parameters provided by the limited campaign is close to that achieved in JGM-3. The comparatively simple observation and reduction technique offers a useful alternative method to monitor the values of the resonant geopotential terms C 22 and S 22 in order to determine possible time variations or to assess upper limits for variations.

UR - https://www.scopus.com/pages/publications/0032845982

U2 - 10.1016/S0273-1177(99)00153-2

DO - 10.1016/S0273-1177(99)00153-2

M3 - Article

AN - SCOPUS:0032845982

SN - 0273-1177

VL - 23

SP - 767

EP - 770

JO - Advances in Space Research

JF - Advances in Space Research

IS - 4

ER -

Determination of resonant geopotential terms using optical observations of geostationary satellites

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