******************************************************************************
IGS Electronic Mail 10 Nov 05:47:01 PST 2008 Message Number 5853
******************************************************************************
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