From Dennis Wed Mar 10 16:24:21 1993 From: Dennis (Dennis) Date: 10 MAR 1993 16:24:21 Subject: [IGSREPORT-165] Preliminary look at GPS Earth orientation Message-ID: *********************************************************************** IGS Electronic Report 10-MAR-1993 16:24:21 Message Number 165 *********************************************************************** >From: Dennis McCarthy Subject: Preliminary look at GPS Earth orientation --------------------------------------------------- Date: 8 March 1993 An updated look at Earth orientation data submitted to the IERS follows. Units are milliseconds of arc for x and y, and milliseconds of time for UT1-UTC. Contributor Data Span Points Mean Standard Deviation (NEOS-GPS) x y UT1-UTC x y UT1-UTC U. of Texas 48794.5 76 -1.89 -3.11 0.82 0.63 -48880.5 Scripps 48780.5 221 -1.56 -0.84 0.63 0.67 -49038.5 U. of Berne 48792.5 8 -0.89 1.21 -0.28 1.52 1.88 0.13 (ITRF90) -48799.5 U. of Berne 48800.5 243 -0.42 -0.11 -3.23 0.89 0.83 1.08 (ITRF91) -49042.5 JPL 48794.5 206 -0.79 0.04 0.76 0.70 -49031.5 GFZ 48795.0 107 -2.34 -1.99 1.13 1.12 -48925.5 ESOC 48794.5 245 -1.10 -0.86 1.42 1.89 -49038.5 EMR 48838.5 155 -0.94 0.34 1.01 0.73 -49038.5 94 0.25 1.34 Plots are available by FAX to anyone interested. Regards, Dennis McCarthy dmc at maia.usno.navy.mil