From stefan.schaer at aiub.unibe.ch Tue Apr 12 06:15:02 2011 From: stefan.schaer at aiub.unibe.ch (Stefan Schaer) Date: Tue, 12 Apr 2011 15:15:02 +0200 Subject: [IGSMAIL-6383] First GLONASS-K1 satellite active Message-ID: <4DA45056.9000908@aiub.unibe.ch> Author: Stefan Schaer Dear IGS colleagues, R04, the first GLONASS-K1 satellite launched on day 057, is active as of day 098 (08 Apr 2011). Corresponding observation data is available currently only from two particular GNSS receiver types: ftp://ftp.unibe.ch/aiub/igsdata/y2011/odata_glonass_d098.txt ftp://ftp.unibe.ch/aiub/igsdata/y2011/odata_glonass_d099.txt List of IGS receivers currently observing R04: bake: TPS NETG3 3.4 bogi: JAVAD TRE_G3T DELTA 3.1.7 MAY,31,2010 chur: TPS NETG3 3.4 dubo: TPS NETG3 3.4 flin: TPS NETG3 3.4 P1 frdn: TPS NETG3 3.4 gope: TPS NETG3 3.4 DEC,12,2009P2 iqal: TPS NETG3 3.4 DEC,12,2009 P2 mdvj: TPS NETG3 3.5 DEC,24,2010 nurk: JAVAD TRE_G3TH DELTA3.1.7 pots: JAVAD TRE_G3TH DELTA3.1.7 svtl: TPS NETG3 3.4 MAY,13,2009 tash: JAVAD TRE_G3TH DELTA3.1.7 tn22: TPS NETG3 3.5 DEC,24,2010 unbt: TPS NET-G3 3.4 NOV,05,2009 P2B urum: TPS NETG3 3.3 vald: TPS NETG3 3.4 whit: TPS NETG3 3.4 wind: JAVAD TRE_G3TH DELTA3.1.7 wtzz: JAVAD TRE_G3TH DELTA3.1.7 MAY,31,2010 With this new satellite (R04) and the recently reactivated satellite (R03/715), the CODE GNSS orbit products include currently up to 55 satellites (32 GPS plus 23 GLONASS). This also implies that the first GLONASS-K1 satellite is already included in CODE's orbit prediction scheme. Once more, it should be emphasized that current data of R14 (722) is considered useless and is therefore generally excluded from our analysis. IMPORTANT NOTES: It is absolutely unpleasant that information on satellite antenna offsets (concerning both microwave and SLR) is still unavailable from official side. We started to use zero values and we intend to determine corresponding values as soon as possible. Moreover, we decided to use at CODE a GLONASS number of 801 to this satellite. The NAGU announcing the launch of the first GLONASS-K1 satellite gives 701. That number, however, was already assigned to a GLONASS-M satellite, which was launched in 2003. ADDITIONAL NOTE: The following IGS GNSS receivers are far from completely observing the operational GLONASS constellation: bisk: ASHTECH Z18 ZT16 0065 ctwn: TRIMBLE NETR5 3.50 dgav: JPS EGGDT 2.5.0 eprt: LEICA GRX1200GGPRO 8.10/3.019 guug: TRIMBLE NETR5 4.19 isba: TRIMBLE NETR5 NP 4.18 / SP 4.17 mar6: JPS E_GGD 2.6.1 JAN,10,2008 mtka: ASHTECH Z18 0065 ZT16 onsa: JPS E_GGD 2.6.1 JAN,10,2008 pove: TRIMBLE NETR5 3.84 ske0: JPS E_GGD 2.6.1 JAN,10,2008 tabv: JPS EGGDT 2.5.0 thti: TRIMBLE NETR8 4.17 urum: TPS NETG3 3.3 vaco: ASHTECH Z18 ZT16 0065 vis0: JPS EGGDT 2.6.1 JAN,10,2008 This is specifically true for dgav, tabv (observing just 10 of 22 operational GLONASS satellites due to very old receiver firmware). See also: ftp://ftp.unibe.ch/aiub/igsdata/odata_glonass_incomplete.txt Best regards, The CODE AC Team