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Combinations of Earth orientation measurements: SPACE2012, COMB2012, and POLE2012

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dc.contributor.author Ratcliff, J. T.
dc.contributor.author Gross, R. S.
dc.date.accessioned 2014-08-19T22:24:21Z
dc.date.available 2014-08-19T22:24:21Z
dc.date.issued 2013-12-01
dc.identifier.uri http://hdl.handle.net/2014/44644
dc.description.abstract Independent Earth orientation measurements taken by the space-geodetic techniques of lunar and satellite laser ranging, very long baseline interferometry, and the Global Positioning System have been combined using a Kalman filter. The resulting combined Earth orientation series, SPACE2012, consists of values and uncertainties for Universal Time, polar motion, and their rates that span from September 28, 1976, to April 26, 2013, at daily intervals and is available in versions with epochs given at either midnight or noon. The space-geodetic measurements used to generate SPACE2012 have then been combined with optical astrometric measurements to form two additional combined Earth orientation series: (1) COMB2012, consisting of values and uncertainties for Universal Time, polar motion, and their rates that span from January 20, 1962, to April 26, 2013, at daily intervals and which are also available in versions with epochs given at either midnight or noon; and (2) POLE2012, consisting of values and uncertainties for polar motion and its rate that span from January 20, 1900, to May 22, 2013, at 30.4375-day intervals. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.relation.ispartofseries JPL Publication en_US
dc.relation.ispartofseries 13-16 en_US
dc.subject VLBI en_US
dc.subject Kalman filter en_US
dc.subject geodesy en_US
dc.subject Earth orientation en_US
dc.subject universal time en_US
dc.subject Global Positioning System en_US
dc.subject laser ranging en_US
dc.subject very long baseline interferometry en_US
dc.title Combinations of Earth orientation measurements: SPACE2012, COMB2012, and POLE2012 en_US
dc.type Technical Report en_US
dc.subject.NASATaxonomy Geophysics en_US


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