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Robert Khachikyan 14-Jan-2009 23:36
IGSMAIL
Subject : [IGSMAIL-5882]: New sites: CHTI, FLRS, FUNC, LPAL (25625)
FROM . Robert Khachikyan - robertk@jpl.nasa.gov
Date : 14-Jan-2009 23:36 -
To : igsmail@igscb.jpl.nasa.gov
Stations : CHTI, FLRS, FUNC
******************************************************************************
IGS Electronic Mail 14 Jan 14:39:32 PST 2009 Message Number 5882
******************************************************************************

Author: Robert Khachikyan

Fellow Colleagues,

Four new stations have been added to the IGS Network.

CHTI is located in Chatham Island, New Zealand, and is intended to
replace the IGS Reference Station CHAT in a few months. CHTI is located
about 20 km north of CHAT. Both stations are producing data and is
available at CDDIS. CHTI is operated by GNS Science (GeoNet) and Land
Information New Zealand (LINZ)

FLRS is located in Flores Island in North Atlantic Ocean. This station
will add excellent coverage given its unique location and its
GPS+GLONASS capability. FLRS is operated by Portugese Geographical
Institute.

FUNC is located in Medeira Islands, Funchal. This station as well
provides added GPS+GLONASS coverage and redundancy approximately 700 km
off the coast of Morroco. FUNC is operated by Portugese Geographical
Institute.

LPAL is located in La Palma Island, Canary Islands. This station
provides excellent GPS+GLONASS coverage in the approximate area as well.

To view the latest map of IGS GPS/GLONASS coverage, visit:
http://igscb.jpl.nasa.gov/network/iglos.html


Best Regards,
--Robert Khachikyan
IGS Central Bureau


From robertk at jpl.nasa.gov Thu Jan 15 10:22:37 2009
From: robertk at jpl.nasa.gov (Robert Khachikyan)
Date: Thu, 15 Jan 2009 10:22:37 -0800
Subject: [IGSMAIL-5883]: Leap Second Inconsistency in Ephemeris
Navigation File
Message-ID: <496F7EED.6080800@jpl.nasa.gov>

******************************************************************************
IGS Electronic Mail 15 Jan 10:26:03 PST 2009 Message Number 5883
******************************************************************************

Author: Robert Khachikyan - IGS Central Bureau

Dear IGS Colleagues,

Will the station operators of the following IGS stations update their
software to ensure
the correct Leap Second is reported in the Ephemeris Navigation File.
These stations
currently report 14 seconds, where the correct value is 15 seconds. The
affected stations are:

CHPI, CHUM, COCO, CUSV, DLFT, FAA1
FAIC, HOLB, HRAC, KIRU, KOKC, KOUR
MAL2, MAS1, MCMC, NNOR, NYAC, PERT
UNAC, USNO, VACS, VILL, WES2

Your urgent cooperation in this matter is highly appreciated. Thank You.

Best Regards,
--Robert Khachikyan
IGS Central Bureau


From lang at unb.ca Thu Jan 15 10:44:10 2009
From: lang at unb.ca (Richard B. Langley)
Date: Thu, 15 Jan 2009 14:44:10 -0400
Subject: [IGSMAIL-5884]: Re: [IGSMAIL-5882]: New sites: CHTI, FLRS,
FUNC, LPAL
In-Reply-To: <496E68D7.2030000@jpl.nasa.gov>
References: <496E68D7.2030000@jpl.nasa.gov>
Message-ID: <1232045050.496f83fa46a03@webmail.unb.ca>

******************************************************************************
IGS Electronic Mail 15 Jan 10:44:14 PST 2009 Message Number 5884
******************************************************************************

Author: Richard Langley

Robert:
I believe that NANO has been supplying GLONASS as well as GPS data for the past month or
so. It's the only NA west-coast GLONASS/GPS station and should be noted in your list and
on the map.
Best regards
-- Richard

Quoting Robert Khachikyan :

> ******************************************************************************
> IGS Electronic Mail 14 Jan 14:39:32 PST 2009 Message Number 5882
> ******************************************************************************
>
> Author: Robert Khachikyan
>
> Fellow Colleagues,
>
> Four new stations have been added to the IGS Network.
>
> CHTI is located in Chatham Island, New Zealand, and is intended to
> replace the IGS Reference Station CHAT in a few months. CHTI is located
> about 20 km north of CHAT. Both stations are producing data and is
> available at CDDIS. CHTI is operated by GNS Science (GeoNet) and Land
> Information New Zealand (LINZ)
>
> FLRS is located in Flores Island in North Atlantic Ocean. This station
> will add excellent coverage given its unique location and its
> GPS+GLONASS capability. FLRS is operated by Portugese Geographical
> Institute.
>
> FUNC is located in Medeira Islands, Funchal. This station as well
> provides added GPS+GLONASS coverage and redundancy approximately 700 km
> off the coast of Morroco. FUNC is operated by Portugese Geographical
> Institute.
>
> LPAL is located in La Palma Island, Canary Islands. This station
> provides excellent GPS+GLONASS coverage in the approximate area as well.
>
> To view the latest map of IGS GPS/GLONASS coverage, visit:
> http://igscb.jpl.nasa.gov/network/iglos.html
>
>
> Best Regards,
> --Robert Khachikyan
> IGS Central Bureau
>


===============================================================================
Richard B. Langley E-mail: lang at unb.ca
Geodetic Research Laboratory Web: http://www.unb.ca/GGE/
Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142
University of New Brunswick Fax: +1 506 453-4943
Fredericton, N.B., Canada E3B 5A3
Fredericton? Where's that? See: http://www.city.fredericton.nb.ca/
===============================================================================


From J.Beavan at gns.cri.nz Thu Jan 15 13:09:27 2009
From: J.Beavan at gns.cri.nz (John Beavan)
Date: Fri, 16 Jan 2009 10:09:27 +1300
Subject: [IGSMAIL-5885]: IGS stations in the New Zealand region
Message-ID:

******************************************************************************
IGS Electronic Mail 15 Jan 13:09:31 PST 2009 Message Number 5885
******************************************************************************

Author: John Beavan

Following Robert Kachikyan's recent announcement about CHTI, I'd like to
provide more information on this station and on four other stations that
were added to the IGS network last year.

I encourage IGS analysis centers to include these sites in their
processing and reprocessing efforts, especially as some of them have a
long history.

The new stations (in addition to AUCK and CHAT which have been IGS
stations since 1995) are:

WGTN, Wellington Airport
Data available at IGS data centers from 1999/359

MQZG, McQueen's Valley (near Christchurch)
Data available at IGS data centers from 2000/007

DUND, Dunedin GPS
Data available at IGS data centers from 2005/236

NIUM, Niue Meteorological Service
Data available at IGS data centers from 2005/258
Niue Island is located in the Pacific Ocean between Tonga and the Cook
Islands.

CHTI, Chatham Island North
Data available at IGS data centers from 2007/345 (available at CDDIS, but
perhaps not yet at other centers)
20 km north of CHAT and installed on much better rock than CHAT.
We intend to keep CHAT running as long as possible, but we expect that
CHTI will eventually supercede CHAT as the IGS station on Chatham Island.

WGTN, MQZG, DUND and CHTI are operated by GNS Science in partnership with
Land Information New Zealand.
NIUM is operated by GNS Science in partnership with Ohio State University
and the Niue Met Service.

--------------------------------------------------------------------------------------
Dr John Beavan, GNS Science - Te Pu Ao,
1 Fairway Drive, PO Box 30368, Lower Hutt, New Zealand
Tel: +64 4 570 4641 Fax: +64 4 570 1440 Mob: 027 221 8861
Email: j.beavan at gns.cri.nz Web: www.gns.cri.nz


Notice: This email and any attachments are confidential. If received in error please destroy and immediately notify us. Do not copy or disclose the contents.


From bosy at kgf.ar.wroc.pl Mon Jan 19 04:25:29 2009
From: bosy at kgf.ar.wroc.pl (=?iso-8859-2?Q?Jaros=B3aw_Bosy?=)
Date: Mon, 19 Jan 2009 13:25:29 +0100
Subject: [IGSMAIL-5886]: WROC: firmware update installed
Message-ID: <006901c97a31$05c65540$1152ffc0$@ar.wroc.pl>

******************************************************************************
IGS Electronic Mail 19 Jan 04:25:40 PST 2009 Message Number 5886
******************************************************************************

Author: Jaroslaw Bosy


Dear colleagues,

we have installed the new firmware 7.0 at the Leica GRX12000GG Pro
receiver on our EPN/IGS station WROC today.

A new sitelog has been uploaded to the EPNCB webpage and IGSCB.

Best regards,

Jarek


=====================================================
prof. Jaroslaw Bosy
Institute of Geodesy and Geoinformatics
Wroclaw University of Environmental and Life Sciences
Grunwaldzka 53, 50-357 Wroclaw, Poland
tel. +48 71 3205688 fax +48 71 3205617
e-mail: bosy at kgf.ar.wroc.pl
www: http://www.ar.wroc.pl/~bosy/
=====================================================


From robertk at jpl.nasa.gov Wed Jan 21 09:51:43 2009
From: robertk at jpl.nasa.gov (Robert Khachikyan)
Date: Wed, 21 Jan 2009 09:51:43 -0800
Subject: [IGSMAIL-5887]: New: igs05_1515.atx
Message-ID: <497760AF.8060404@jpl.nasa.gov>

******************************************************************************
IGS Electronic Mail 21 Jan 09:55:22 PST 2009 Message Number 5887
******************************************************************************

Author: Ralf Schmid and Robert Khachikyan

Dear colleagues!

The absolute IGS antenna correction file (igs05_wwww.atx) has been
updated. The new release is called 'igs05_1515.atx'. It contains the
following changes:

1) Two additional receiver antenna calibrations provided by Leica:

LEIATX1230+GNSS NONE
LEIAX1203+GNSS NONE

2) Corrected COSPAR ID for two of the latest GLONASS-M satellites:

R728: 2008-067B --> 2008-067C
R729: 2008-067C --> 2008-067B

The update of the antenna correction model is available at
ftp://igscb.jpl.nasa.gov/pub/station/general/igs05_1515.atx
or
ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx

For details about the update procedures for the various IGS antenna
files please refer to
ftp://igscb.jpl.nasa.gov/pub/station/general/antenna_README.pdf

With best regards,
Ralf Schmid and Robert Khachikyan
on behalf of the IGS Antenna Working Group


From jim.ray at noaa.gov Wed Jan 21 10:46:17 2009
From: jim.ray at noaa.gov (Jim.Ray)
Date: Wed, 21 Jan 2009 13:46:17 -0500
Subject: [IGSMAIL-5888]: IGL SP3 header change
Message-ID: <49776D79.8080309@noaa.gov>

******************************************************************************
IGS Electronic Mail 21 Jan 10:46:18 PST 2009 Message Number 5888
******************************************************************************

Author: Jim Ray

A very longstanding format error in the IGS GLONASS
SP3 product files -- those with names of the form
iglWWWWd.sp3 -- was recently reported to us. Header
line 13 of each SP3 file has read:

%R G cc GPS ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc

whereas the correct syntax should be:

%c R cc GPS ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc

where R/G in column 4 signifies "GLONASS" or "GPS"
respectively.

It seems that this error has existed for at least several
years. Evidently most user software does not actually pay
close attention to this comment line.

Unless we hear immediate objections, this error will be
fixed in the IGLOS orbit products for week 1513, which will
be distributed tomorrow (22 Jan 2009).

We thank Steve Hilla for bringing this error to our attention.


From iag at dgfi.badw.de Thu Jan 29 10:45:21 2009
From: iag at dgfi.badw.de (IAG Office)
Date: Thu, 29 Jan 2009 19:45:21 +0100
Subject: [IGSMAIL-5889]: IAG Scientific Assembly - Extension of deadline
for abstract submission
Message-ID: <4981F941.3030102@dgfi.badw.de>

******************************************************************************
IGS Electronic Mail 29 Jan 10:46:03 PST 2009 Message Number 5889
******************************************************************************

Author: H. Drewes - IAG Secretary General

IAG Scientific Assembly 2009, Buenos Aires, Argentina, 31 August - 4
September 2009

The website for the IAG 2009 Scientific Assembly
(http://iag2009.com.ar/) has been recently compromised by hackers. This
was a very serious situation and as soon as it was discovered, the site
had to be taken down in order to keep the server's and user's security.
The LOC and their computer support kept working hard for corrective
actions and to prevent future attacks. Today they have informed that the
site is now safe to use.

Due to the problems with the IAG Website, the deadline for abstract
submission and for grant applications has been extended up to and
inclusive 20 February 2009.

Please check the IAG2009 Website for the latest information on the
IAG2009 Scientific Assembly. For any doubt or suggestion you might have,
please do not hesitate to contact the IAG2009 Webmaster Federico Primomo
at fede2knet at gmail.com or admin at iag2009.com.ar.

Please send your abstract and registration now and note, that according
to the IAG Bylaws there is a registration fee reduction for IAG members
(50 USD for full members, 30 USD for student members) who paid the
membership fee for 2009. Please also note that there is limited
availability for rooms at the venue in the INTERCONTINENTAL Hotel at the
internet rate, so you should reserve in time.

Looking forward to see you in Buenos Aires
IAG Office IAG2009 Local Organizing Committee IAG2009 Scientific
Committee

[demime 1.01d removed an attachment of type text/x-vcard which had a name of iag.vcf]


From jim.ray at noaa.gov Fri Jan 30 09:27:07 2009
From: jim.ray at noaa.gov (Jim.Ray)
Date: Fri, 30 Jan 2009 12:27:07 -0500
Subject: [IGSMAIL-5890]: recent problems with PRN16 orbit predictions
Message-ID: <4983386B.60600@noaa.gov>

******************************************************************************
IGS Electronic Mail 30 Jan 09:27:12 PST 2009 Message Number 5890
******************************************************************************

Author: Jim Ray & Jake Griffiths

In contrast with the rather optimistic view we gave in IGSMail #5874
(igscb.jpl.nasa.gov/mail/igsmail/2009/msg00000.html), starting about
Tuesday, 27 Jan 2009 (1516_2), IGS Ultra-rapid orbit predictions for
the GPS II-R satellite PRN16/SVN56 have suffered large, atypical errors.
The statistics for the first 6 hr of recent predictions are shown below
for that satellite and for the constellation means. The overall
constellation WRMS was only seriously affected for IGU 1516_2_12, being
more than 7 times worse than normal.

=======================================================
IGU orbit prediction stats (1-D) for PRN16/SVN56 & full
GPS constellation w.r.t. IGS Rapid orbits
[computed over 6-hr intervals HR to (HR+6)]
=======================================================
PRN16 ALL ALL
WRMS WRMS MEDI
WEEK D HR (mm) (mm) (mm)
---- - -- ---- ---- ----
1516 2 00 34 21 17
1516 2 06 127 35 18
1516 2 12 1046 172 16
1516 2 18 158 27 20
1516 3 00 796 40 18
1516 3 06 81 21 13
1516 3 12 145 25 19
1516 3 18 77 17 13
1516 4 00 31 18 14
1516 4 06 88 29 17
1516 4 12 13 19 13
1516 4 18 34 18 12

recent means 24 18
=======================================================

The BRDC orbits for PRN16 seem to have suffered also during the
same period, esp on day 3:

=======================================================
WRMS BRDC orbit prediction residuals (1-D) for PRN16/SVN56
w.r.t. IGS Rapid orbits -- computed over 24-hr intervals
=======================================================
PRN16 All
WEEK D (mm) (mm)
---- - ---- ----
1516 0 946 1031
1516 1 794 907
1516 2 1259 909
1516 3 1915 955
1516 4 706 954
=======================================================

There has been no significant degradation in the directly estimated
IGS orbit products using actual tracking data for PRN16, only for the
orbit predictions.

PRN16 is approaching the end of its eclipse season but we did not
see similar problems during earlier periods in this same eclipse
phase. These recent prediction problems are quite unusual for any
satellite but esp for II-R and II-RM spacecraft.

As you can see above, the median GPS orbit prediction residuals have
remained very low and stable throughout this interval, which means
that users should be able to detect and delete such instances of
anomalous satellite behavior by examining and editing their own data
fits (assuming simultaneous observations of at least 5 SVs).