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Combinations of Earth Orientation Measurements: SPACE2016, COMB2016, and POLE2016
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Author and Affiliation:
Ratcliff, J. T.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Gross, R. S.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
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, SPACE2016, consists of values and uncertainties for Universal Time, polar motion, and their rates that span from September 28, 1976, to June 30, 2017, at daily intervals and is available in versions with epochs given at either midnight or noon. The space-geodetic measurements used to generate SPACE2016 have then been combined with optical astrometric measurements to form two additional combined Earth orientation series: (1) COMB2016, consisting of values and uncertainties for Universal Time, polar motion, and their rates that span from January 20, 1962, to June 30, 2017, at daily intervals and which are also available in versions with epochs given at either midnight or noon; and (2) POLE2016, consisting of values and uncertainties for polar motion and its rate that span from January 20, 1900, to June 22, 2017, at 30.4375-day intervals.
Publication Date: Nov 01, 2017
Document ID:
20170011607
(Acquired Dec 14, 2017)
Subject Category: GEOPHYSICS
Report/Patent Number: JPL-Publ-17-8
Document Type: Technical Report
Contract/Grant/Task Num: NNN12AA01C; WBS 102688.C.C.00.513.23
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 31p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: EARTH ORIENTATION; GEODESY; SATELLITE LASER RANGING; KALMAN FILTERS; ASTROMETRY; EARTH ROTATION; LASER RANGING; VERY LONG BASE INTERFEROMETRY; GLOBAL POSITIONING SYSTEM; UNIVERSAL TIME; DATA PROCESSING; OPTICAL MEASUREMENT; ERROR ANALYSIS
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