From jimr@maia.usno.navy.mil Thu Oct 22 17:02:02 EDT 1998
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From: Jim Ray (USNO 202-762-1444) 
Message-Id: <199810221945.PAA15594@maia.usno.navy.mil>
Subject: USNO clock solution results
To: gpst@maia.usno.navy.mil
Date: Thu, 22 Oct 1998 15:45:04 EDT
X-Mailer: Elm [revision: 212.4]
Status: RO

The IGS Associate Analysis Center at USNO is now making our clock
solution results available as a service to the IGS/BIPM GPS time
transfer project.  They can be found at the Web site:

http://maia.usno.navy.mil/gpsclocks/index.html

Two types of solution results are provided:

  Rapid solutions, which are a byproduct of the orbit solutions made
  each day for the IGS Rapid combined products.  These are available
  for data starting 19 July 1998.
  
  Final solutions, which use the IGS Final combined products (available
  with ~10 days delay) and a larger network of mostly "good" clocks.
  These are available for data starting 06 September 1998.

Only plots of clock variations (relative to the USNO receiver held fixed)
are provided for the Rapid solutions.  Plots and rinex solution files are
provided for the Final solutions.  The Web site contains further details.

When the IGS begins to provide its own combined station clock results
(probably in the near future) we will reconsider the continued need for
our Final solutions and make suitable adjustments.

I would like that thank Jim Rohde and Merri Sue Carter for their
considerable efforts in producing these results.

--Jim

=========================================================================
Jim Ray                                   e-mail: jimr@maia.usno.navy.mil
U.S. Naval Observatory, EO Dept.          phone : 202-762-1444
3450 Massachusetts Avenue, NW             fax   : 202-762-1563
Washington, DC  20392-5420
=========================================================================