[IGSREPORT-11] Preliminary look at GPS Earth orientation

[Dennis]

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IGS Electronic Report     16-NOV-1992 17:04:39       Message Number 11
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>From:     Dennis McCarthy
Subject:  Preliminary look at GPS Earth orientation
          -----------------------------------------

Date:     16 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          1.30  1.97  
             -48870.5

Scripps      48780.5   144  -1.13 -1.68          0.86  0.63
             -48924.5     

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   124  -0.54  0.00  -2.71   1.04  0.94  1.26 
(ITRF91)    -48923.5

JPL          48794.5   110  -1.05  0.05          0.72  0.84 
             -48925.5

GFZ          48795.0   107  -2.45 -1.91          1.18  1.12
             -48925.5

ESOC         48794.5   140  -1.72 -0.13          1.39  1.92
             -48933.5

EMR          48838.5    48  -0.68  0.49          1.41  1.10
             -48911.5
                         6                0.37               0.29


Plots are available by FAX to anyone interested.

Regards,

Dennis McCarthy
  dmc at maia.usno.navy.mil