26 October 2010 FA/GPSW.406 Dear Colleagues, Please find enclosed tracking schedule No. 55 for international time and frequency comparisons by GPS common-view single-channel receivers. Computation of this schedule is fully automated. It follows that all areas have an equal number of tracks (48). The enclosed schedule should be implemented on MJD 55503 (03 November 2010) 00h00 UTC. The GPS tracking schedules continue to be sent to regular users by e-mail and are also available by anonymous FTP (ftp2.bipm.org, node 62.161.69.5, subdirectory pub\tai\publication) and on the BIPM website (http://www.bipm.org). The track times given in this schedule are the start times for the 13 minute standard tracks. Because a period of about 2 minutes is usually required to lock the receiver onto the satellite signal, this delay must be subtracted from the given track time. It follows that if you operate an ‘NBS-type’ receiver, for instance TTR 5, TTR 5A, TTR 6 or TTR 6A from AOA, you must modify the given track time: for example, the European schedule of PRN 08 at 00h06 should be entered in the AOA receivers at 00h04. For TTR 6 users a utility software (TTR6SCHLOAD) to upload correctly the schedule in the receiver can be found in the FTP server (ftp2.bipm.org, node 62.161.69.5, subdirectory pub\tai\data). This tracking schedule conforms with the technical directives for standardization drawn up by the CCTF Group on Global navigation satellite systems Time Transfer Standards (CGGTTS). Please feel free to contact us if there are questions, suggestions or comments regarding the enclosed documents. Yours sincerely, E. Felicitas Arias Director, Time frequency and gravimetry Department Note for multi-channel receivers Multi-channel receivers do not need to implement the new schedules if they refer track times to MJD 50722 (1 October 1997), the reference date of GPS schedule No. 29. As schedules for single-channel receivers always refer to this date, compatibility between multi- channel and single-channel observations is maintained. In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule. ***************************************************************************** * GPS Schedule no 55 * * for implementation on MJD 55503 (03 November 2010) at 0h UTC * * Reference date MJD 50722 (1997 October 1) * ***************************************************************************** This is a suggested tracking schedule for international time comparisons using GPS satellites in common-view between ten areas of the globe. Area Participating laboratories Europe E AOS, BEV, BIM, BY, CAO, CH, DLR, DMDM, DTAG, EIM, IFAG, IPQ, IT, JV, KZ, LT, LV, Mad*, MIKE, MKEH, NIMB, NPL, OB*, OCA*, OP, ORB, PL, PTB, RAAI*, RIRT*, ROA, SIQ, SMD, SMU, SP, SU, TP, UA, UME, VSL East North America ENA AO*, APL, NRC, NRL, USNO West North America WNA AMC*, CNM, CNMP, Gold*, NIST, WWV* Hawaii H WWVH* East Asia EA BIRM, HKO, JATC, KIM, KRIS, NAO, NICT, NIM, NIMT, NMIJ, NMLS, NTSC, SCL, SG, TL, VMI Australia and New Zealand A AUS, Can*, MSL India I NPLI Middle East ME INPL, NIS South Africa SAF ZA South America SAM IGNA, INTI, Kou*, ONBA, ONRJ, TCC Laboratories participating in TAI are designated by their usual acronyms (see Table 3 of the BIPM Annual Report on time activities, Volume 1, 2006); other laboratories are indicated by an asterisk. * AMC : USNO Alternate Master Clock, Colorado. AO : Arecibo Observatory. Kou : CNES Kourou Center. Mad, Gold, Can : JPL Deep Space Network, Madrid, Goldstone, Canberra. OCA : Observatoire de la Cote d'Azur, Grasse, France. OB : Observatoire de Besançon, Besançon, France. RIRT : Russian Institute of Radionavigation and Time, Saint Petersburg. RAAI : Romanian Academy Astronomical Institute, Bucarest. WWV, WWVH : NIST stations in Colorado and Hawaii. The start times of the tracks are referenced to UTC. The start time of a track is the date of the first observation. It may be necessary to advance this time by 2 minutes if you operate an NBS-type receiver, in order to allow the lock-on procedure onto the satellite signal. The track length is 780 s. All the track times should be decremented by 4 minutes each day, to account for the GPS sidereal orbits. The class bytes are such that in association with the satellite number they form a unique identifyer for each common view. GPS Schedule no 55 ( 3 November 2010) *** Europe *** Class PRN Start Connects h m 74 05 0 10 WNA,ME,ENA A0 07 0 26 ME,I,EA A1 07 0 42 ME,I,EA A2 07 0 58 ME,I,EA A3 07 1 14 ME,I,EA 18 15 1 30 WNA,ENA,SAM A0 08 1 46 ME,I,EA A1 08 2 2 ME,I,EA A2 08 2 18 ME,I,EA 74 15 2 34 WNA,ME,ENA A0 28 2 50 ME,I,EA A1 28 3 6 ME,I,EA A2 28 3 22 ME,I,EA A3 28 3 54 ME,I,EA A0 17 4 42 ME,I,EA A1 17 5 14 ME,I,EA BC 27 6 18 SAF,ME,I BD 27 6 50 SAF,ME,I BC 09 7 6 SAF,ME,I BD 09 7 22 SAF,ME,I A0 02 7 54 ME,I,EA 74 31 9 14 WNA,ME,ENA BC 25 10 2 SAF,ME,I BD 25 10 34 SAF,ME,I D4 25 10 50 SAF,ME,I BC 30 11 6 SAF,ME,I 74 16 11 22 WNA,ME,ENA 18 06 11 38 WNA,ENA,SAM 18 03 11 54 WNA,ENA,SAM 19 03 12 26 WNA,ENA,SAM 1A 03 12 42 WNA,ENA,SAM BC 16 13 30 SAF,ME,SAM BD 16 13 46 SAF,ME,SAM 74 19 14 18 WNA,ME,ENA BC 06 15 22 SAF,ME,I A0 22 15 38 ME,I,EA BC 03 15 54 SAF,ME,I 18 11 16 22 WNA,ENA,SAM 74 11 16 38 WNA,ME,ENA 75 11 16 54 WNA,ME,ENA BC 23 18 14 SAF,ME,SAM 74 04 20 54 WNA,ME,ENA 75 04 21 10 WNA,ME,ENA,SAM 74 10 22 14 WNA,ME,ENA 18 02 22 30 WNA,ENA,SAM 19 02 22 46 WNA,ENA,SAM BC 08 23 2 SAF,ME,SAM 75 05 23 50 WNA,ME,ENA GPS Schedule no 55 ( 3 November 2010) *** E. North America *** *** W. North America *** *** East Asia *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 74 05 0 10 WNA,ME,E 74 05 0 10 ME,ENA,E A0 07 0 26 ME,I,E 34 21 0 26 WNA,H 34 21 0 26 H,ENA A1 07 0 42 ME,I,E 34 29 0 42 WNA,H,SAM 34 29 0 42 H,ENA,SAM A2 07 0 58 ME,I,E 35 29 0 58 WNA,H,SAM 35 29 0 58 H,ENA,SAM A3 07 1 14 ME,I,E 34 18 1 14 WNA,H 34 18 1 14 H,ENA A0 08 1 46 ME,I,E 18 15 1 30 WNA,E,SAM 18 15 1 30 ENA,E,SAM A1 08 2 2 ME,I,E 35 18 1 46 WNA,H 35 18 1 46 H,ENA A2 08 2 18 ME,I,E 74 15 2 34 WNA,ME,E 74 15 2 34 ME,ENA,E A0 28 2 50 ME,I,E 34 14 4 26 WNA,H 34 14 4 26 H,ENA A1 28 3 6 ME,I,E 34 24 4 58 WNA,H,EA 34 24 4 58 H,EA,ENA A2 28 3 22 ME,I,E 34 31 5 14 WNA,H,SAM 34 31 5 14 H,ENA,SAM 3C 32 3 38 A,H 35 31 5 30 WNA,H,SAM 35 31 5 30 H,ENA,SAM A3 28 3 54 ME,I,E 34 32 6 18 WNA,H,EA 34 32 6 18 H,EA,ENA 3D 32 4 10 A,H 35 32 6 34 WNA,H,EA 35 32 6 34 H,EA,ENA A0 17 4 42 ME,I,E 34 20 7 22 WNA,H,EA 34 20 7 22 H,EA,ENA 34 24 4 58 WNA,H,ENA 35 20 7 38 WNA,H,EA 35 20 7 38 H,EA,ENA A1 17 5 14 ME,I,E 34 23 8 42 WNA,H,EA 34 23 8 42 H,EA,ENA 34 32 6 18 WNA,H,ENA 35 23 8 58 WNA,H,EA 35 23 8 58 H,EA,ENA 35 32 6 34 WNA,H,ENA 74 31 9 14 WNA,ME,E 74 31 9 14 ME,ENA,E 3C 23 6 50 A,H D4 32 9 30 WNA,H,SAM D4 32 9 30 H,ENA,SAM 34 20 7 22 WNA,H,ENA D5 32 9 46 WNA,H,SAM D5 32 9 46 H,ENA,SAM 35 20 7 38 WNA,H,ENA 34 13 10 18 WNA,H,EA 34 13 10 18 H,EA,ENA A0 02 7 54 ME,I,E 74 16 11 22 WNA,ME,E 74 16 11 22 ME,ENA,E 3C 17 8 10 A,H 18 06 11 38 WNA,E,SAM 18 06 11 38 ENA,E,SAM 34 23 8 42 WNA,H,ENA 18 03 11 54 WNA,E,SAM 18 03 11 54 ENA,E,SAM 35 23 8 58 WNA,H,ENA 19 03 12 26 WNA,E,SAM 19 03 12 26 ENA,E,SAM 34 13 10 18 WNA,H,ENA 1A 03 12 42 WNA,E,SAM 1A 03 12 42 ENA,E,SAM 3C 04 10 34 A,H 34 08 12 58 WNA,H,EA 34 08 12 58 H,EA,ENA 3D 04 11 22 A,H 35 08 13 14 WNA,H,EA 35 08 13 14 H,EA,ENA 3C 02 11 54 A,H 74 19 14 18 WNA,ME,E 74 19 14 18 ME,ENA,E 34 08 12 58 WNA,H,ENA D4 08 15 22 WNA,H,SAM D4 08 15 22 H,ENA,SAM 35 08 13 14 WNA,H,ENA 18 11 16 22 WNA,E,SAM 18 11 16 22 ENA,E,SAM AC 27 13 46 I,A 74 11 16 38 WNA,ME,E 74 11 16 38 ME,ENA,E AC 09 14 2 I,A 75 11 16 54 WNA,ME,E 75 11 16 54 ME,ENA,E 3C 05 14 34 A,H 34 27 17 10 WNA,H,EA 34 27 17 10 H,EA,ENA A0 22 15 38 ME,I,E 34 04 17 26 WNA,H,SAM 34 04 17 26 H,ENA,SAM 3C 12 15 54 A,H 35 04 17 42 WNA,H,SAM 35 04 17 42 H,ENA,SAM 3D 12 16 38 A,H 34 09 17 58 WNA,H,EA 34 09 17 58 H,EA,ENA 34 27 17 10 WNA,H,ENA 34 12 19 2 WNA,H,EA 34 12 19 2 H,EA,ENA 34 09 17 58 WNA,H,ENA 35 12 20 22 WNA,H 35 12 20 22 H,ENA AC 22 18 30 I,A 34 25 20 38 WNA,H,EA 34 25 20 38 H,EA,ENA 34 12 19 2 WNA,H,ENA 74 04 20 54 WNA,ME,E 74 04 20 54 ME,ENA,E 3C 29 19 18 A,H 75 04 21 10 WNA,ME,E,SAM 75 04 21 10 ME,ENA,E,SAM 3D 29 19 50 A,H D4 29 21 58 WNA,H,EA D4 29 21 58 H,EA,ENA 34 25 20 38 WNA,H,ENA 74 10 22 14 WNA,ME,E 74 10 22 14 ME,ENA,E BC 32 21 26 SAF,ME,I 18 02 22 30 WNA,E,SAM 18 02 22 30 ENA,E,SAM AC 06 21 42 I,A 19 02 22 46 WNA,E,SAM 19 02 22 46 ENA,E,SAM D4 29 21 58 WNA,H,ENA 75 05 23 50 WNA,ME,E 75 05 23 50 ME,ENA,E AD 03 22 14 I,A GPS Schedule no 55 ( 3 November 2010) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 34 21 0 26 WNA,ENA CC 11 0 10 SAF F1 03 0 10 I 34 29 0 42 WNA,ENA,SAM CC 20 0 26 SAF A0 07 0 26 ME,EA,E 35 29 0 58 WNA,ENA,SAM A4 23 1 30 SAF,I A1 07 0 42 ME,EA,E 34 18 1 14 WNA,ENA CC 23 1 46 SAF A2 07 0 58 ME,EA,E 35 18 1 46 WNA,ENA A4 13 2 34 SAF,I A3 07 1 14 ME,EA,E 3C 16 3 6 A CC 13 2 50 SAF A4 23 1 30 SAF,A 3C 32 3 38 A,EA 3C 16 3 6 H A0 08 1 46 ME,EA,E 3D 32 4 10 A,EA CD 13 3 22 SAF A1 08 2 2 ME,EA,E 34 14 4 26 WNA,ENA 3C 32 3 38 H,EA A2 08 2 18 ME,EA,E 34 24 4 58 WNA,EA,ENA 3D 32 4 10 H,EA A4 13 2 34 SAF,A 34 31 5 14 WNA,ENA,SAM CC 10 4 42 SAF A0 28 2 50 ME,EA,E 35 31 5 30 WNA,ENA,SAM CD 10 4 58 SAF A1 28 3 6 ME,EA,E 34 32 6 18 WNA,EA,ENA D4 10 5 30 SAF A2 28 3 22 ME,EA,E 35 32 6 34 WNA,EA,ENA D5 10 5 46 SAF F1 08 3 38 I 3C 23 6 50 A,EA 3C 23 6 50 H,EA A3 28 3 54 ME,EA,E 3C 13 7 6 A 3C 13 7 6 H F2 08 4 10 I 34 20 7 22 WNA,EA,ENA CC 26 7 38 SAF A0 17 4 42 ME,EA,E 35 20 7 38 WNA,EA,ENA CD 26 7 54 SAF A1 17 5 14 ME,EA,E 3C 17 8 10 A,EA 3C 17 8 10 H,EA BC 02 6 2 SAF,ME 34 23 8 42 WNA,EA,ENA D4 26 8 26 SAF BC 27 6 18 SAF,ME,E 35 23 8 58 WNA,EA,ENA CC 15 9 14 SAF BD 02 6 34 SAF,ME D4 32 9 30 WNA,ENA,SAM CD 15 9 30 SAF BD 27 6 50 SAF,ME,E D5 32 9 46 WNA,ENA,SAM D4 15 9 46 SAF BC 09 7 6 SAF,ME,E 34 13 10 18 WNA,EA,ENA 3C 04 10 34 H,EA BD 09 7 22 SAF,ME,E 3C 04 10 34 A,EA 3D 04 11 22 H,EA A0 02 7 54 ME,EA,E 3D 04 11 22 A,EA AC 15 11 38 I BC 25 10 2 SAF,ME,E 3C 02 11 54 A,EA 3C 02 11 54 H,EA BD 25 10 34 SAF,ME,E 38 05 12 10 I CC 12 12 10 SAF D4 25 10 50 SAF,ME,E 34 08 12 58 WNA,EA,ENA CD 12 12 26 SAF BC 30 11 6 SAF,ME,E 35 08 13 14 WNA,EA,ENA AC 27 13 46 I,EA AC 15 11 38 A 3C 05 14 34 A,EA AC 09 14 2 I,EA 38 05 12 10 H 38 27 14 50 I A4 29 14 18 SAF,I AC 27 13 46 A,EA D4 27 15 6 I 3C 05 14 34 H,EA AC 09 14 2 A,EA D4 08 15 22 WNA,ENA,SAM CC 29 15 6 SAF A4 29 14 18 SAF,A 3C 12 15 54 A,EA 3C 12 15 54 H,EA 38 27 14 50 H 3D 12 16 38 A,EA 3D 12 16 38 H,EA D4 27 15 6 H 34 27 17 10 WNA,EA,ENA AC 30 17 58 I BC 06 15 22 SAF,ME,E 34 04 17 26 WNA,ENA,SAM AC 22 18 30 I,EA A0 22 15 38 ME,EA,E 35 04 17 42 WNA,ENA,SAM CC 16 18 46 SAF BC 03 15 54 SAF,ME,E 34 09 17 58 WNA,EA,ENA 3C 29 19 18 H,EA AC 30 17 58 A 34 12 19 2 WNA,EA,ENA 3D 29 19 50 H,EA AC 22 18 30 A,EA 3C 29 19 18 A,EA CC 03 20 22 SAF BC 24 19 2 SAF,ME 3D 29 19 50 A,EA CC 19 20 54 SAF 38 30 20 6 H 38 30 20 6 I AC 06 21 42 I,EA BC 32 21 26 SAF,ME,EA 35 12 20 22 WNA,ENA AC 03 21 58 I AC 06 21 42 A,EA 34 25 20 38 WNA,EA,ENA AD 03 22 14 I,EA AC 03 21 58 A D4 29 21 58 WNA,EA,ENA CD 11 23 34 SAF AD 03 22 14 A,EA 38 16 23 18 I CC 32 23 50 SAF 38 16 23 18 H GPS Schedule no 55 ( 3 November 2010) *** Middle East *** *** South Africa *** *** South America *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 74 05 0 10 WNA,ENA,E CC 11 0 10 A F8 02 0 10 SAM A0 07 0 26 I,EA,E CC 20 0 26 A FB 02 0 26 SAM A1 07 0 42 I,EA,E A4 23 1 30 I,A 34 29 0 42 WNA,H,ENA A2 07 0 58 I,EA,E CC 23 1 46 A 35 29 0 58 WNA,H,ENA A3 07 1 14 I,EA,E A4 13 2 34 I,A FC 02 1 14 SAM A0 08 1 46 I,EA,E CC 13 2 50 A 18 15 1 30 WNA,ENA,E A1 08 2 2 I,EA,E CD 13 3 22 A FD 02 1 46 SAM A2 08 2 18 I,EA,E CC 10 4 42 A F8 09 2 2 SAM 74 15 2 34 WNA,ENA,E CD 10 4 58 A FB 09 2 18 SAM A0 28 2 50 I,EA,E D4 10 5 30 A FC 09 2 34 SAM A1 28 3 6 I,EA,E D5 10 5 46 A FD 09 2 50 SAM A2 28 3 22 I,EA,E BC 02 6 2 ME,I FE 09 3 6 SAM A3 28 3 54 I,EA,E BC 27 6 18 ME,I,E F8 12 3 22 SAM A0 17 4 42 I,EA,E BD 02 6 34 ME,I FB 12 3 38 SAM A1 17 5 14 I,EA,E BD 27 6 50 ME,I,E FC 12 3 54 SAM BC 02 6 2 SAF,I BC 09 7 6 ME,I,E FD 12 4 10 SAM BC 27 6 18 SAF,I,E BD 09 7 22 ME,I,E FE 12 4 26 SAM BD 02 6 34 SAF,I CC 26 7 38 A FE 12 4 42 SAM BD 27 6 50 SAF,I,E CD 26 7 54 A F8 18 4 58 SAM BC 09 7 6 SAF,I,E D4 26 8 26 A 34 31 5 14 WNA,H,ENA BD 09 7 22 SAF,I,E BC 21 8 58 ME,SAM 35 31 5 30 WNA,H,ENA A0 02 7 54 I,EA,E CC 15 9 14 A FB 18 5 46 SAM BC 21 8 58 SAF,SAM CD 15 9 30 A FC 18 6 2 SAM 74 31 9 14 WNA,ENA,E D4 15 9 46 A FD 18 6 18 SAM BC 25 10 2 SAF,I,E BC 25 10 2 ME,I,E FE 18 6 34 SAM BD 25 10 34 SAF,I,E BD 25 10 34 ME,I,E FE 18 6 50 SAM D4 25 10 50 SAF,I,E D4 25 10 50 ME,I,E FE 18 7 6 SAM BC 30 11 6 SAF,I,E BC 30 11 6 ME,I,E BC 21 8 58 SAF,ME 74 16 11 22 WNA,ENA,E CC 12 12 10 A D4 32 9 30 WNA,H,ENA BC 16 13 30 SAF,E,SAM CD 12 12 26 A D5 32 9 46 WNA,H,ENA BD 16 13 46 SAF,E,SAM BC 16 13 30 ME,E,SAM 18 06 11 38 WNA,ENA,E 74 19 14 18 WNA,ENA,E BD 16 13 46 ME,E,SAM 18 03 11 54 WNA,ENA,E D4 16 14 34 SAF,SAM A4 29 14 18 I,A 19 03 12 26 WNA,ENA,E D5 16 14 50 SAF,SAM D4 16 14 34 ME,SAM 1A 03 12 42 WNA,ENA,E BC 06 15 22 SAF,I,E D5 16 14 50 ME,SAM BC 16 13 30 SAF,ME,E A0 22 15 38 I,EA,E CC 29 15 6 A BD 16 13 46 SAF,ME,E BC 03 15 54 SAF,I,E BC 06 15 22 ME,I,E D4 16 14 34 SAF,ME 74 11 16 38 WNA,ENA,E BC 03 15 54 ME,I,E D5 16 14 50 SAF,ME 75 11 16 54 WNA,ENA,E BC 23 18 14 ME,E,SAM D4 08 15 22 WNA,H,ENA BC 23 18 14 SAF,E,SAM CC 16 18 46 A 18 11 16 22 WNA,ENA,E BC 24 19 2 SAF,I BC 24 19 2 ME,I 34 04 17 26 WNA,H,ENA BC 13 19 34 SAF,SAM BC 13 19 34 ME,SAM 35 04 17 42 WNA,H,ENA 74 04 20 54 WNA,ENA,E CC 03 20 22 A BC 23 18 14 SAF,ME,E 75 04 21 10 WNA,ENA,E,SAM CC 19 20 54 A BC 13 19 34 SAF,ME BC 32 21 26 SAF,I,EA BC 32 21 26 ME,I,EA 75 04 21 10 WNA,ME,ENA,E 74 10 22 14 WNA,ENA,E BC 08 23 2 ME,E,SAM 18 02 22 30 WNA,ENA,E BC 08 23 2 SAF,E,SAM CD 11 23 34 A 19 02 22 46 WNA,ENA,E 75 05 23 50 WNA,ENA,E CC 32 23 50 A BC 08 23 2 SAF,ME,E