Subject: [Sirgas-Mail] No.1438: igs08_1879.atx: Update including GALILEO-2 satellites E208 and E209
From: Laura Sanchez <lm.sanchez@tum.de>

This is a copy of [IGSMAIL-7227] igs08_1879.atx: Update including 
GALILEO-2 satellites E208 and E209

Dear IGS colleagues!

The absolute IGS antenna correction file (igs08_wwww.atx) has been
updated. The new release is called &#180;igs08_1879.atx&#180;. It contains the
following changes:

1) The two GALILEO-2 satellites launched on 17 December 2015 have been
added:

E08 (E208)
E09 (E209)

The following conventional phase center offset (PCO) values were assigned:

PCO_X =  15.0 cm
PCO_Y =   0.0 cm
PCO_Z = 100.0 cm

 > Orbital and Technical Parameters
http://www.gsc-europa.eu/system-status/orbital-and-technical-parameters

NAGU message 2015021:
 > NOTICE ADVISORY TO GALILEO USERS (NAGU) 2015021
 > DATE GENERATED (UTC):2015-12-28 10:30
 >
 > NAGU TYPE: GENERAL
 > NAGU NUMBER: 2015021
 > NAGU SUBJECT: LAUNCH OF GSAT0208 AND GSAT0209
 > NAGU REFERENCED TO: N/A
 > START DATE EVENT (UTC): 2015-12-17 11:51
 > END DATE EVENT (UTC): N/A
 > SATELLITE AFFECTED: GSAT0208, GSAT0209
 >
 > EVENT DESCRIPTION: GALILEO SATELLITES GSAT0208 (SV_ID 08) AND 
GSAT0209 (SV_ID 09) WERE LAUNCHED ON 2015-12-17 AT 11:51 UTC. GSAT0208 
AND GSAT0209 ARE PLANNED TO BE POSITIONED IN SLOTS C07 AND C02 OF THE 
CONSTELLATION.  USERS WILL BE ADVISED OF AVAILABILITY OF SIGNALS 
FOLLOWING COMPLETION OF COMMISSIONING ACTIVITIES.
http://www.gsc-europa.eu/notice-advisory-to-galileo-users-nagu-2015021

2) A decommission date for the following satellite has been added:

G04 (G034): 9 November 2015

Although officially removed from the GPS constellation on 3 November
2015, Block IIA satellite SVN34/PRN04 didn&#180;t stop signal transmission
before 9 November 2015 (DOY 313) according to the IGS tracking
statistics provided by CODE
(ftp://ftp.unibe.ch/aiub/igsdata/odata_gnss_day.txt).

NANU message 2015091:
 > NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015091
 > SUBJ: SVN34 (PRN04) DECOMMISSIONING JDAY 307/2209
 > 1. NANU TYPE: DECOM
 > NANU NUMBER: 2015091
 > NANU DTG: 032216Z NOV 2015
 > REFERENCE NANU: 2015089
 > REF NANU DTG: 282019Z OCT 2015
 > SVN: 34
 > PRN: 04
 > UNUSABLE START JDAY: 306
 > UNUSABLE START TIME ZULU: 2222
 > UNUSABLE START CALENDAR DATE: 02 NOV 2015
 > DECOMMISSIONING JDAY: 307
 > DECOMMISSIONING TIME ZULU: 2209
 > DECOMMISSIONING CALENDAR DATE: 03 NOV 2015
 >
 > 2. CONDITION: GPS SATELLITE SVN34 (PRN04) WAS UNUSABLE AS OF JDAY 306 
(02 NOV 2015)
 > AND REMOVED FROM THE GPS CONSTELLATION ON JDAY 307 (03 NOV 2015).
http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2015091

3) One robot calibration provided by Tallysman Wireless Inc. has been added:

TWIVP6000       NONE


The updated antenna correction model is available at
ftp://ftp.igs.org/pub/station/general/igs08_1879.atx
or
ftp://ftp.igs.org/pub/station/general/igs08.atx

Those who don&#180;t cope with the MGEX extension can use the following model
instead:
ftp://ftp.igs.org/pub/station/general/igs08_1879_woMGEX.atx

Shortly before the end of the year, a paper on the generation of
igs08.atx could be published:
Schmid Ralf, Dach Rolf, Collilieux Xavier, Jaeggi Adrian, Schmitz
Martin, Dilssner Florian (2015) Absolute IGS antenna phase center model
igs08.atx: status and potential improvements. Journal of Geodesy, doi
10.1007/s00190-015-0876-3
http://doi.org/10.1007/s00190-015-0876-3
Sorry for the delay of that paper!

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