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[IGSMAIL-5650]: GLONASS-M R15 tracking deficiency
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IGS Electronic Mail 24 Oct 07:18:46 PDT 2007 Message Number 5650
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Author: Stefan Schaer
Dear IGS/IGLOS colleagues and station operators,
GLONASS-M R15 (716), launched on 25 Dec 2006, was put into operation on
12 Oct 2007:
http://www.glonass-ianc.rsa.ru/pls/htmldb/glonass.collectors_content.get_cys
_en_as_txt
See also:
http://www.aiub.unibe.ch/download/igsdata/y2007/odata_glonass_d283.txt
http://www.aiub.unibe.ch/download/igsdata/y2007/odata_glonass_d284.txt
http://www.aiub.unibe.ch/download/igsdata/y2007/odata_glonass_d285.txt
http://www.aiub.unibe.ch/download/igsdata/y2007/odata_glonass_d286.txt
First IGS/IGLOS tracking data for R15 became available on 16 Feb 2007,
as announced in IGS Mail 5574:
http://igscb.jpl.nasa.gov/mail/igsmail/2007/msg00054.html
It is alarming that the number of GPS/GLONASS tracking stations
collecting R15 observations is still small. Note that R15 is one of
three GLONASS satellites included in the tracking program by the ILRS.
In the following table, just 17 of 66 GPS/GLONASS tracking stations are
currently able to track R15, or, to be more specific, GLONASS
satellites transmitting on negative frequency channels. These stations
are indicated with "OK":
Name Receiver model Firmware version Remark
-------------------------------------------------------
BAKO LEICA GRX1200GGPRO 5.00/3.013 OK
BOGI JPS E_GGD 2.4 SEP,02,2004
BOGO TPS EUROCARD 2.3 MAY,13,2003 P1
BORJ JPS LEGACY 2.5 OCT,16,2006 P2
CAGZ JPS E_GGD AGNV7TGA2O0
COMO TPS E_GGD 3.1 JAN,24,2007 P1
CONZ TPS E_GGD 2.6.0 APR,18,2007 OK
CRAR TPS ODYSSEY_E 2.5 JUN,22,2005 P1
DARR TPS LEGACY 2.3P4
DAVR TRIMBLE NETR5 3.30 OK
DLFT JPS LEGACY 2.3 APR,28,2004 P4
FAA1 TPS LEGACY 2.5 GPS only
FFMJ JPS LEGACY 2.6.0 APR,18,2007 OK
GANP TRIMBLE NETR5 3.30/3 OK
GODZ ASHTECH Z18 0065 ZT16
GOPE ASHTECH Z18 0065
GRAC ASHTECH Z18 0065 GPS only
MTKA ASHTECH Z18 0065 ZT16
HELG TPS EUROCARD 2.3 APR,28,2004 P4
HERT ASHTECH Z18 0065 ZT16
HOFN TPS E_GGD 2.6.0 APR,18,2007 OK
HUEG JPS LEGACY EURO_3 / 2.3P4
IRKJ JPS LEGACY 2.3 NOV,12,2002
JOZ2 ASHTECH Z18 0064
KHAJ JPS LEGACY 2.3 APR,28,2004 P4
KIR0 JPS E_GGD 2.3 APR,28,2004 P4
LEIJ JPS LEGACY 2.6.0 APR,18,2007 OK
LHAZ TPS E_GGD 2.5 JUN,22,2005 P1
MAR6 JPS E_GGD 2.5 APR,10,2007 P3
MAT1 ASHTECH Z18 0065 ZT16
MDVJ JPS LEGACY 2.3 NOV,12,2002
METZ JPS EUROCARD 2.3 NOV,12,2002
MOBJ TPS LEGACY 2.3 APR,28,2004 P4
MTBG TPS GB-1000 2.6 Mar,16,2006
MTKA ASHTECH Z18 0065 ZT16
NOVM JPS LEGACY 2.3 OCT,17,2003 P3
NTUS LEICA GRX1200GGPRO 5.10/3.013 OK
ONSA JPS E_GGD 2.3 FEB,17,2004 P4B
PARK JPS E_GGD V2.5
PENC LEICA GRX1200GGPRO 5.10/3.013 OK
POUS TPS GB-1000 2.5 APR,07,2005 P1B
REUN ASHTECH Z18 0065
REYK TPS E_GGD 2.6.0 APR,18,2007 OK
SASS JPS LEGACY 2.6.0 APR,18,2007 OK
SKE0 JPS E_GGD 2.4 SEP,02,2004
SNEC TPS GB-1000 2.5 JUN,22,2005 P1
SOFI TPS E_GGD 2.3 APR,28,2004 P4
SPT0 JPS LEGACY 2.3 APR,28,2004 P4
STR2 TPS E_GGD 2.5P1
SUNM JPS LEGACY JPS_4 / 2.3 NOV,12,
SYDN JPS E_GGD V2.3P3 GPS only
THU2 JPS LEGACY 2.3 APR,28,2004 P4
TITZ JPS LEGACY E_GGD_2/2.5P2
TIXJ TPS ODYSSEY_E 2.5 JUN,22,2005 P1
UNB3 TRIMBLE NETR5 3.50 OK
UNBJ TPS LEGACY 2.3 APR,28,2004 P4
UNBT TPS NET-G3 3.1 JUN,28,2007 P3
UNFE ASHTECH Z18 0065 ZT17
UNPG TPS ODYSSEY_E 2.5 FEB,21,2005
VIL0 JPS EGGDT 2.5 JUN,22,2005 P1
VIS0 JPS EGGDT 2.5 JUN,22,2005 P1
WARN JPS LEGACY 2.6.0 APR,18,2007 OK
WROC LEICA GRX1200GGPRO 5.50/3.014 OK
WTZJ JPS LEGACY 2.3 APR,28,2004 P4
WTZL LEICA GRX1200GGPRO 5.50/3.014 OK
WTZR TPS NETG3 3.1 JUN,28,2007 P3
WTZZ TPS E_GGD 2.6.0 APR,18,2007 OK
ZIMJ JPS LEGACY 2.3 APR,28,2004 P4
ZIMT TRIMBLE NETR5 NAV 3.20 / BOOT 3 OK
All Javad receiver models can be upgraded to firmware version 2.6.0
(finally enabling tracking of R15, which is transmitting on frequency
channel 0). For more information please be referred to:
http://www.javad.com/jns/
It is important to mention that this update was previously unavailable
via www for Javad receiver models with board versions Euro_x, JPS_3,
JPS_4_x. The latest firmware version available was 2.3p4. The update to
firmware 2.6.0 for Javad's old Legacy receivers has been made available
via www at our request. Note: It is therefore questionable whether the
specified receiver model is actually correct for "JPS LEGACY" receivers
listed with a firmware version higher than 2.3p4:
BORJ, FFMJ, LEIJ, SASS, TITZ, WARN
Regarding Topcon's receiver models: Currently, the version of the
firmware that supports tracking of R15 is on the last stage of
testing. This version is expected to be released in a few weeks. Beta
version (3.2) is available right now. For questions please contact
support @ topcon.com.
Regarding Ashtech's Z18: This receiver model is no longer supported.
It should be emphasized once more that keeping the running firmware up
to date is indispensable for any modern electronic device, in
particular for GNSS receivers, which have to track all the available
navigation signals and therefore must cope with potential GNSS
constellation changes.
Many thanks to Sergei Yudanov (Javad) and Alexei Zinoviev (Topcon) for
their input.
Best regards,
The CODE AC Team