NDLI: Combinations of earth orientation measurements: space2011, comb2011, and pole2011

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Combinations of earth orientation measurements: space2011, comb2011, and pole2011

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gross, R. S. Ratcliff, J. T.
Copyright Year	2013
Description	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, SPACE2011, consists of values and uncertainties for Universal Time, polar motion, and their rates that span from September 28, 1976, to July 13, 2012, at daily intervals and is available in versions with epochs given at either midnight or noon. The space-geodetic measurements used to generate SPACE2011 have then been combined with optical astrometric measurements to form two additional combined Earth orientation series: (1) COMB2011, consisting of values and uncertainties for Universal Time, polar motion, and their rates that span from January 20, 1962, to July 13, 2012, at daily intervals and which are also available in versions with epochs given at either midnight or noon; and (2) POLE2011, consisting of values and uncertainties for polar motion and its rate that span from January 20, 1900, to June 21, 2012, at 30.4375-day intervals.
File Size	907686
Page Count	30
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140000670
Archival Resource Key	ark:/13960/t2t48pq1c
Language	English
Publisher Date	2013-02-01
Access Restriction	Open
Subject Keyword	Geophysics Universal Time Polar Wandering Geology Optical Measurement Lunar Satellites Very Long Base Interferometry Geodetic Surveys Global Positioning System Time Measurement Kalman Filters Earth Orientation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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