[IGSMAIL-5854]: Three new GLONASS-M satellites active

[Stefan Schaer]

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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