[IGSREPORT-5] Preliminary look at GPS Earth orientation

[Dennis]

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IGS Electronic Report     11-NOV-1992 18:46:31       Message Number 5
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>From:     Dennis McCarthy
Subject:  Preliminary look at GPS Earth orientation
          -----------------------------------------

Date:     9 November 1992


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    69  -0.71 -2.31          1.28  1.98  
             -48870.5

Scripps      48780.5   137  -1.10 -1.66          0.85  0.61
             -48918.5     

U. of Berne  48792.5     8  -0.95  1.26  -0.28   1.51  1.90  0.13 
 (ITRF90)    -48799.5

U. of Berne  48800.5   124  -0.53 -0.03  -2.71   1.02  0.96  1.26 
(ITRF91)    -48923.5

JPL          48794.5   110  -1.04  0.02          0.71  0.88 
             -48925.5

GFZ          48795.0   103  -2.44 -1.94          1.20  1.15
             -48918.5

ESOC         48794.5   126  -1.70 -0.01          1.33  1.98
             -48919.5

EMR          48838.5    48  -0.67  0.49          1.38  0.93
             -48904.5
                         6                0.38               0.29


Plots are available by FAX to anyone interested.

Regards,

Dennis McCarthy
  dmc at maia.usno.navy.mil