[IGSREPORT-23] Preliminary look at GPS Earth orientation

[Dennis McCarthy]

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IGS Electronic Report     24-NOV-1992 09:02:00       Message Number 23
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From:     Dennis McCarthy
Subject:  Preliminary look at GPS Earth orientation
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Date:     23 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    76  -1.90 -3.11          0.93  0.74  
             -48880.5

Scripps      48780.5   151  -1.17 -1.72          0.93  0.68
             -48932.5     

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   137  -0.51 -0.03  -2.86   1.03  0.94  1.29 
(ITRF91)    -48936.5

JPL          48794.5   123  -1.05  0.03          0.74  0.85 
             -48940.5

GFZ          48795.0   107  -2.45 -1.94          1.21  1.15
             -48925.5

ESOC         48794.5   147  -1.66 -0.14          1.41  1.88
             -48940.5

EMR          48838.5    68  -0.88  0.54          1.26  1.00
             -48940.5
                        22                0.56               0.70


Plots are available by FAX to anyone interested.

Regards,

Dennis McCarthy
  dmc @ maia.usno.navy.mil