[IGSMAIL-6474] igs08_1657.atx: Update including latest GLONASS constellation changes
Robert Khachikyan
robertk at jpl.nasa.gov
Thu Oct 13 10:39:51 PDT 2011
Dear IGS colleagues!
The absolute IGS antenna correction file (igs08_wwww.atx) has been
updated. The new release is called 'igs08_1657.atx'. The following
GLONASS constellation changes were considered:
> > According to GLONASS System control center the SV Glonass-M No722 is scheduled to be transferred to the orbital reserve on the 13 October, 2011 at 01:00 (MSC). Frequency channel -7 (minus 7) will be assigned to SV Glonass No715 orbital slot No14 .
> > During the works SV Glonass-M No715 will be unusable.
http://www.glonass-ianc.rsa.ru/en/content/news/?ELEMENT_ID=174
> > GLONASS Constellation Status at 13.10.2011 based on both the almanac analysis and navigation messages received at 13:00 13.10.11 (UTC) in IAC
-> changes in almanac slots 3, 4 and 14
> > 3 3 -5 701 26.02.11 7.5 - - 21:15 12.10.11 Flight Tests
> > 4 1 06 742 02.10.11 0.4 - - 03:07 10.10.11 Commissioning Phase
> > 14 2 -7 715 25.12.06 03.04.07 57.6 + + 13:10 13.10.11 In operation
http://www.glonass-ianc.rsa.ru/en/GLONASS/
> GLONASS-K1 No. 701 (801) L1/L2 Transmissions Stop
https://listserv.unb.ca/cgi-bin/wa?A2=ind1110&L=CANSPACE&T=0&F=&S=&P=16417
ftp://ftp.unibe.ch/aiub/igsdata/odata_gnss_day.txt
In detail, the latest release of igs08.atx contains the following changes:
1) New file entries for the following satellites:
R715 (R14)
R742 (R04)
R801 (R03)
2) Decommission dates for the following satellites:
R715 (R03): 12 October 2011
R722 (R14): 12 October 2011
R801 (R04): 10 October 2011
The updated antenna correction model is available at
ftp://igs.org/pub/station/general/igs08_1657.atx
or
ftp://igs.org/pub/station/general/igs08.atx
Many thanks to Vladimir Mitrikas for his help!
With best regards,
Ralf Schmid and Robert Khachikyan
on behalf of the IGS Antenna Working Group
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