From jon.clarke@npl.co.uk Tue Mar 13 08:36:42 EST 2001
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From: Jon Clarke
To: "Dach_Rolf (E-mail)"
Cc: "Ray_Jim (E-mail)"
Subject: New NPLF GPS carrier phase station
Date: Tue, 13 Mar 2001 13:33:53 -0000
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Status: RO
Hi Rolf,
I have got our Javad Legacy carrier phase GPS/GLONASS receiver set-up
properly at last for gathering Rinex data automatically. It is called
station NPLF. It is being published daily at BKG/IFAG amongst their IGEX
data (as it includes GLONASS) at ftp://igs.ifag.de/IGEX/obs/2001/ .
This receiver is referenced by our active hydrogen maser UTC(NPL), like
NPLD, so I wondered whether you could include its data in your time
transfer solution? Unfortunately it still has not received the necessary
modifications, so power cycles will still cause the internal oscillator
to jump, however I have got it running on a protected power supply, so
these should occur only very rarely.
I will register NPLF as an IGLOS station as soon as the IGS decide on
the new site-log format. Alternatively, if that does not happen soon, I
could just remove the GLONASS measurements and register it as an IGS
station.
Jon
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Mr Jon Clarke Time and Frequency
Section,
tel: +44 (0) 20 8943 6548 Centre for Electromagnetic and Time
Metrology,
fax: +44 (0) 20 8943 6529 National Physical
Laboratory,
e-mail: jon.clarke@npl.co.uk Queens Road,
Teddington,
web: http://www.npl.co.uk/npl/ctm/ TW11 0LW,
U.K.
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From: Jon Clarke
To: "IGLOS_Mail (E-mail)"
Subject: [IGLOSMAIL-218] New NPLF station not yet registered
Date: Tue, 13 Mar 2001 17:07:38 -0000
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******************************************************************************
IGLOS Electronic Mail 13 Mar 09:10:31 PST 2001 Message Number 218
******************************************************************************
Author: Jon Clarke
Subject: New NPLF station not yet registered
Dear Colleagues,
Last week I completed the necessary automation so that the data from our
Topcon/Javad Legacy GPS/GLONASS carrier phase receiver is processed and
submitted to BKG/IFAG every day with the station name NPLF. This is why
the data appeared in the "CDDIS Current IGLOS Data Holdings (as of
13-Mar-01 11:38)". This receiver is referenced to UTC(NPL), one of our
active hydrogen masers, as is our IGS station NPLD.
As yet I have not completed an IGEX/IGLOS site log file because, as I
understand it, the IGS are near to completing the move to a new
IGS/IGLOS combined site log file, so I was going to wait for this to be
finished. I will check with the Central Bureau whether this is
acceptable.
Our 3S Navigation R100-40T, NPLE, has not yet been repaired.
Regards,
Jon
------------------------------------------------------------------------
-
Mr Jon Clarke Time and Frequency
Section,
tel: +44 (0) 20 8943 6548 Centre for Electromagnetic and Time
Metrology,
fax: +44 (0) 20 8943 6529 National Physical
Laboratory,
e-mail: jon.clarke@npl.co.uk Queens Road,
Teddington,
web: http://www.npl.co.uk/npl/ctm/ TW11 0LW,
U.K.
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