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[IGSREPORT-0955] GPS Earth Orientation
- Subject: [IGSREPORT-0955] GPS Earth Orientation
- From: Dennis McCarthy / USNO
- Date: Thu, 12 May 1994 11:37:16 PDT
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IGS Electronic Report Thu May 12 11:37:16 PDT 1994 Message Number 0955
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Author: Dennis McCarthy / USNO
Subject: GPS Earth Orientation
From: Dennis McCarthy
Subject: Preliminary look at GPS Earth orientation
Date: 12 May 1994
An updated look at Earth orientation data submitted to the IERS
follows. Data reduced in the ITRF92 have been used where available.
Means refer to the ITRF92 for those contributors who have reported
estimates in the ITRF92 (CODE, ESOC, EMR, JPL, and GFZ). 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 48780.5 676 -1.61 -1.54 0.77 0.85
-49458.5
CODE 48792.5 686 0.17 -1.13 -0.10 0.66 0.80 2.34
-49477.5
JPL 48794.5 647 0.03 -1.31 0.62 0.64
-49472.5
ESOC 48794.5 679 -0.22 -1.70 1.06 1.29
-49472.5
NRCan 48830.5 604 -0.02 -0.71 0.59 0.74
-49479.5
460 0.10 0.79
GFZ 48997.5 480 -0.37 -1.49 0.34 0.34
-49472.5
NOAA 48988.5 475 -0.54 -1.50 1.11 1.31
-49480.5
Plots of the residuals are available by FAX to anyone interested.
Below is the same information as above provided for only the
last thirty data points sent by each contributor.
Contributor Data Span Mean Standard Deviation
(NEOS-GPS)
x y UT1-UTC x y UT1-UTC
Scripps 49429.5 -0.40 -2.06 0.55 0.49
-49458.5
CODE 49448.5 0.09 -1.08 -3.85 0.34 0.24 0.17
-49477.5
JPL 49443.5 -0.12 -1.57 0.25 0.33
-49472.5
ESOC 49443.5 -0.31 -1.57 0.36 0.49
-49472.5
NRCan 49450.5 -0.23 -1.02 0.32 0.43
-49479.5
49447.5 0.81 0.34
-49479.5
GFZ 49443.5 -0.52 -1.65 0.34 0.34
-49472.5
NOAA 49444.5 -0.35 -0.98 0.82 1.27
-49480.5
--
Dennis D. McCarthy dmc @ maia.usno.navy.mil
Chief Earth Orientation Parameters phone: (202) 653-0066
U.S. Naval Observatory fax: (202) 653-0587
Washington, DC 20392-5100