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[IGSMAIL-5854]: Three new GLONASS-M satellites active
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IGS Electronic Mail 10 Nov 06:12:53 PST 2008 Message Number 5854
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Author: Stefan Schaer
Dear IGS/IGLOS colleagues,
We got confronted with first IGS/IGLOS tracking data of the three new
GLONASS-M satellites launched on 25 Sep 2008, namely:
R18 (724) on 17 Oct 2008 (day 291)
R21 (725) on 27 Oct 2008 (day 301)
R22 (726) on 06 Nov 2008 (day 311)
With these three new satellites, the GLONASS-M constellation now
consists of 16 satellites: R06, R07, R09, R10, R11, R13, R14, R15, R17,
R18, R19, R20, R21, R22, R23, R24. The only remaining active GLONASS
satellite of the older generation is R04.
The CODE GNSS orbit products include currently up to 48 satellites (32
GPS plus 16 GLONASS). It should be mentioned that current data of R09
(722) is considered useless and is therefore generally excluded from
our analysis.
IMPORTANT NOTE: There is still a significant number of IGS/IGLOS GNSS
receivers which is not yet ready for zero or negative GLONASS frequency
channels. This is an unacceptable situation, especially since already 8
(of 17) GLONASS satellites transmit their signals on these frequency
channels: R09 (-2), R11 (0), R13 (-2), R15 (0), R17 (-1), R18 (-3), R21
(-1), R22 (-3). See:
http://www.aiub.unibe.ch/download/igsdata/tracking_glonass.txt
See also IGS Mails 5650, 5668, 5695, 5824:
http://igscb.jpl.nasa.gov/mail/igsmail/2007/msg00130.html
http://igscb.jpl.nasa.gov/mail/igsmail/2007/msg00148.html
http://igscb.jpl.nasa.gov/mail/igsmail/2008/msg00017.html
http://igscb.jpl.nasa.gov/mail/igsmail/2008/msg00146.html
List of GNSS receivers not yet ready for negative frequency channels:
BAKO LEICA GRX1200GGPRO 5.00/3.013
CAGZ TPS E_GGD 3.1 MAR,13,2007 P2
CRAR TPS ODYSSEY_E 2.5 JUN,22,2005 P1
ILHA LEICA GRX1200GGPRO 5.10
MOBJ TPS LEGACY 2.3 APR,28,2004 P4
MTBG TPS GB-1000
MTKA ASHTECH Z18 0065 ZT16
PARK JPS E_GGD 2.5
POUS TPS GB-1000 2.5 APR,07,2005 P1B1
SNEC TPS GB-1000 2.5 JUN,22,2005 P1
SYDN JPS E_GGD 2.3P3
TIXJ TPS ODYSSEY_E 2.5 JUN,22,2005 P1
TSEA LEICA GRX1200GGPRO 4.10
VESL TPS GB-1000 3.1 JUN,28,2007 P3
List of GNSS receivers not tracking (or reporting) GLONASS at all:
CNMR TRIMBLE NETR5 NP 3.50 / SP 0.00
EPRT LEICA GRX1200GGPRO 5.62
GOPE ASHTECH Z18 0065
GUUG TRIMBLE NETR5 NP 3.50 / SP 0.00
MAT1 ASHTECH Z18 0065 ZT16
NTZ1 TPS NETG3 3.2 DEC,12,2007
VEN1 ASHTECH Z18 0065 ZT16
Corresponding lists are regularly posted to:
http://www.aiub.unibe.ch/download/igsdata/tracking_glo_neg_freq_not_ready.txt
http://www.aiub.unibe.ch/download/igsdata/tracking_no_glonass.txt
Best regards,
The CODE AC Team