[IGSREPORT-447] GPS Earth orientation

[Dennis]

***********************************************************************
IGS Electronic Report     21-AUG-1993 13:05:01       Message Number 447
***********************************************************************
 

>From: Dennis McCarthy
Subj: GPS Earth orientation
---------------------------


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

Scripps      48780.5   410  -1.76 -0.42          0.62  0.81
             -49192.5     

CODE(ITRF91) 48800.5   410  -0.75 -0.64  -3.84   0.83  0.94  1.18 
             -49209.5

JPL          48794.5   367  -0.84 -0.13          0.74  0.75 
             -49206.5

ESOC         48794.5   413  -1.04 -0.84          1.30  1.63
             -49206.5

EMR          48830.5   338  -1.25  0.23          0.75  0.88
             -49213.5
                       246                0.16               0.86

GFZ          48997.5   221  -0.86  0.24          0.38  0.43
             -49213.5

NOAA         48988.5   203  -1.45 -0.82          0.97  1.53
             -49210.5

Plots of the residuals are available by FAX to anyone interested.

Regards,

Dennis McCarthy
  dmc at maia.usno.navy.mil