26 April 2010 FA/GPSW.405 Dear Colleagues, Please find enclosed tracking schedule No. 54 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 55316 (30 April 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 54 * * for implementation on MJD 55316 (30 April 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 3, 2008); 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 54 (30 April 2010) *** Europe *** Class PRN Start Connects h m 74 16 0 10 WNA,ME,ENA A0 29 0 26 ME,I,EA 18 03 0 42 WNA,ENA,SAM 18 06 0 58 WNA,ENA,SAM A0 21 2 18 ME,I,EA A1 21 2 34 ME,I,EA 74 19 2 50 WNA,ME,ENA 75 19 3 6 WNA,ME,ENA A0 18 3 22 ME,I,EA A0 22 3 54 ME,I,EA A1 22 4 10 ME,I,EA A2 22 4 26 ME,I,EA A3 22 4 54 ME,I,EA 74 11 5 10 WNA,ME,ENA 75 11 5 26 WNA,ME,ENA A0 14 5 58 ME,I,EA A1 14 6 14 ME,I,EA BC 23 7 34 SAF,ME,SAM BD 23 7 50 SAF,ME,SAM BC 13 8 6 SAF,ME,SAM A0 32 8 22 ME,I,EA A1 32 8 38 ME,I,EA BD 13 8 54 SAF,ME,SAM 74 04 9 26 WNA,ME,ENA 75 04 9 42 WNA,ME,ENA A0 23 11 2 ME,I,EA BC 08 11 18 SAF,ME,SAM 74 10 11 34 WNA,ME,ENA 75 10 11 50 WNA,ME,ENA 74 05 12 54 WNA,ME,ENA A0 07 13 26 ME,I,EA 74 15 14 46 WNA,ME,ENA 75 15 15 2 WNA,ME,ENA BC 05 15 34 SAF,ME,SAM A0 28 16 6 ME,I,EA 74 26 16 22 WNA,ME,ENA 74 09 16 38 WNA,ME,ENA,SAM 18 18 16 54 WNA,ENA,SAM 19 18 17 26 WNA,ENA,SAM BC 26 18 30 SAF,ME,SAM BD 26 18 46 SAF,ME,SAM D4 26 19 18 SAF,ME,SAM BC 29 20 22 SAF,ME,SAM BD 29 20 38 SAF,ME,SAM 74 31 21 58 WNA,ME,ENA BC 24 23 2 SAF,ME,SAM BD 24 23 34 SAF,ME,SAM BC 31 23 50 SAF,ME,SAM GPS Schedule no 54 (30 April 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 16 0 10 WNA,ME,E 74 16 0 10 ME,ENA,E 3C 04 0 10 A,H 68 19 0 26 SAM 18 03 0 42 ENA,E,SAM A0 29 0 26 ME,I,E 18 03 0 42 WNA,E,SAM 18 06 0 58 ENA,E,SAM 3C 02 0 42 A,H 18 06 0 58 WNA,E,SAM 34 13 1 30 H,ENA,SAM 3D 02 0 58 A,H 69 19 1 14 SAM 34 08 1 46 H,EA,ENA 34 08 1 46 WNA,H,ENA 34 13 1 30 WNA,H,SAM 35 08 2 2 H,EA,ENA 35 08 2 2 WNA,H,ENA 34 08 1 46 WNA,H,EA 74 19 2 50 ME,ENA,E A0 21 2 18 ME,I,E 35 08 2 2 WNA,H,EA 75 19 3 6 ME,ENA,E A1 21 2 34 ME,I,E 74 19 2 50 WNA,ME,E 18 07 3 38 ENA,SAM 3C 05 2 50 A,H 75 19 3 6 WNA,ME,E 18 08 4 54 ENA,SAM AC 09 3 6 I,A 18 07 3 38 WNA,SAM 74 11 5 10 ME,ENA,E A0 18 3 22 ME,I,E 18 08 4 54 WNA,SAM 75 11 5 26 ME,ENA,E A0 22 3 54 ME,I,E 74 11 5 10 WNA,ME,E 34 04 6 14 H,ENA,SAM A1 22 4 10 ME,I,E 75 11 5 26 WNA,ME,E 34 09 6 30 H,EA,ENA A2 22 4 26 ME,I,E 34 04 6 14 WNA,H,SAM 35 04 6 46 H,ENA,SAM A3 22 4 54 ME,I,E 34 09 6 30 WNA,H,EA 80 26 7 2 A,H,EA 3C 12 5 42 A,H 35 04 6 46 WNA,H,SAM 34 12 7 50 H,EA,ENA A0 14 5 58 ME,I,E 34 12 7 50 WNA,H,EA 35 12 8 6 H,EA,ENA A1 14 6 14 ME,I,E 35 12 8 6 WNA,H,EA 34 02 8 22 H,ENA 34 09 6 30 WNA,H,ENA 34 02 8 22 WNA,H D4 12 9 10 H,ENA 80 26 7 2 WNA,A,H D4 12 9 10 WNA,H 74 04 9 26 ME,ENA,E AC 22 7 18 I,A 74 04 9 26 WNA,ME,E 75 04 9 42 ME,ENA,E 34 12 7 50 WNA,H,ENA 75 04 9 42 WNA,ME,E 34 29 10 30 H,EA,ENA 35 12 8 6 WNA,H,ENA 34 29 10 30 WNA,H,EA 35 29 10 46 H,EA,ENA A0 32 8 22 ME,I,E 35 29 10 46 WNA,H,EA 74 10 11 34 ME,ENA,E A1 32 8 38 ME,I,E 74 10 11 34 WNA,ME,E 75 10 11 50 ME,ENA,E 3C 14 8 54 A,H 75 10 11 50 WNA,ME,E 34 21 12 38 H,EA,ENA BC 32 9 58 SAF,ME,I 34 21 12 38 WNA,H,EA 74 05 12 54 ME,ENA,E BD 32 10 14 SAF,ME,I 74 05 12 54 WNA,ME,E D4 29 13 26 H,ENA,SAM 34 29 10 30 WNA,H,ENA D4 29 13 26 WNA,H,SAM D5 29 13 42 H,ENA,SAM 35 29 10 46 WNA,H,ENA D5 29 13 42 WNA,H,SAM 34 18 14 14 H,ENA A0 23 11 2 ME,I,E 34 18 14 14 WNA,H 80 16 14 30 A,H,EA AC 06 11 18 I,A 74 15 14 46 WNA,ME,E 74 15 14 46 ME,ENA,E 3C 31 11 34 A,H 75 15 15 2 WNA,ME,E 75 15 15 2 ME,ENA,E 3D 31 12 22 A,H 34 24 15 50 WNA,H,SAM 34 24 15 50 H,ENA,SAM 34 21 12 38 WNA,H,ENA 74 26 16 22 WNA,ME,E 74 26 16 22 ME,ENA,E A0 07 13 26 ME,I,E 74 09 16 38 WNA,ME,E,SAM 74 09 16 38 ME,ENA,E,SAM D4 13 13 58 SAF,ME,I 18 18 16 54 WNA,E,SAM 18 18 16 54 ENA,E,SAM 80 16 14 30 WNA,A,H 19 18 17 26 WNA,E,SAM 19 18 17 26 ENA,E,SAM AC 11 14 46 I,A 34 31 17 58 WNA,H,SAM 34 31 17 58 H,ENA,SAM AD 11 15 2 I,A 35 31 18 14 WNA,H,SAM 35 31 18 14 H,ENA,SAM A0 28 16 6 ME,I,E 34 32 19 2 WNA,H,EA 34 32 19 2 H,EA,ENA 34 32 19 2 WNA,H,ENA 35 32 19 18 WNA,H,EA 35 32 19 18 H,EA,ENA 35 32 19 18 WNA,H,ENA 34 20 20 22 WNA,H,EA 34 20 20 22 H,EA,ENA 34 20 20 22 WNA,H,ENA 34 23 21 42 WNA,H,EA 34 23 21 42 H,EA,ENA 34 23 21 42 WNA,H,ENA 74 31 21 58 WNA,ME,E 74 31 21 58 ME,ENA,E 35 13 22 30 WNA,H,ENA 35 13 22 30 WNA,H,EA 35 13 22 30 H,EA,ENA D4 13 22 46 WNA,H,ENA D4 13 22 46 WNA,H,EA D4 13 22 46 H,EA,ENA 3D 04 23 34 A,H GPS Schedule no 54 (30 April 2010) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3C 04 0 10 A,EA 3C 04 0 10 H,EA A4 30 0 10 SAF 3C 02 0 42 A,EA CC 26 0 26 SAF A0 29 0 26 ME,EA,E 3D 02 0 58 A,EA 3C 02 0 42 H,EA F1 15 0 42 I 34 13 1 30 WNA,ENA,SAM 3D 02 0 58 H,EA BC 18 0 58 SAF,ME 34 08 1 46 WNA,EA,ENA CC 12 1 30 SAF F2 15 1 14 I 35 08 2 2 WNA,EA,ENA CC 30 2 18 SAF FB 15 1 30 I 3C 05 2 50 A,EA 3C 05 2 50 H,EA FC 15 1 46 I 3D 05 4 10 A AC 09 3 6 I,EA FD 15 2 2 I 3C 12 5 42 A,EA CC 29 3 22 SAF A0 21 2 18 ME,EA,E 34 04 6 14 WNA,ENA,SAM CD 29 3 54 SAF A1 21 2 34 ME,EA,E 34 09 6 30 WNA,EA,ENA 3D 05 4 10 H F1 18 2 50 I 35 04 6 46 WNA,ENA,SAM AC 21 5 26 I AC 09 3 6 A,EA 80 26 7 2 WNA,A,EA 3C 12 5 42 H,EA A0 18 3 22 ME,EA,E 3C 26 7 34 A CC 16 6 46 SAF A4 14 3 38 SAF 34 12 7 50 WNA,EA,ENA 80 26 7 2 WNA,H,EA A0 22 3 54 ME,EA,E 35 12 8 6 WNA,EA,ENA AC 22 7 18 I,EA A1 22 4 10 ME,EA,E 34 02 8 22 WNA,ENA 3C 26 7 34 H A2 22 4 26 ME,EA,E 3C 14 8 54 A,EA CC 06 8 22 SAF A3 22 4 54 ME,EA,E D4 12 9 10 WNA,ENA CC 03 8 38 SAF F1 14 5 10 I 38 31 9 42 I 3C 14 8 54 H,EA AC 21 5 26 A 3C 21 10 14 A CD 03 9 10 SAF F2 14 5 42 I 34 29 10 30 WNA,EA,ENA D4 03 9 26 SAF A0 14 5 58 ME,EA,E 35 29 10 46 WNA,EA,ENA CC 19 9 42 SAF A1 14 6 14 ME,EA,E 3C 24 11 2 A 3C 21 10 14 H FB 14 6 30 I 3C 31 11 34 A,EA 3C 24 11 2 H FC 14 6 46 I 38 16 11 50 I AC 06 11 18 I,EA FD 14 7 2 I D4 16 12 6 I 3C 31 11 34 H,EA AC 22 7 18 A,EA 3D 31 12 22 A,EA CC 11 12 6 SAF A0 32 8 22 ME,EA,E 34 21 12 38 WNA,EA,ENA 3D 31 12 22 H,EA A1 32 8 38 ME,EA,E 38 06 13 10 I CD 11 12 38 SAF 38 31 9 42 H D4 29 13 26 WNA,ENA,SAM D4 11 12 54 SAF BC 32 9 58 SAF,ME,EA D5 29 13 42 WNA,ENA,SAM CC 20 13 26 SAF BD 32 10 14 SAF,ME,EA 34 18 14 14 WNA,ENA CD 20 13 42 SAF A0 23 11 2 ME,EA,E 80 16 14 30 WNA,A,EA A4 23 14 14 SAF,I AC 06 11 18 A,EA 34 24 15 50 WNA,ENA,SAM 80 16 14 30 WNA,H,EA 38 16 11 50 H 3C 32 16 22 A AC 11 14 46 I,EA D4 16 12 6 H 38 11 17 10 I AD 11 15 2 I,EA 38 06 13 10 H 34 31 17 58 WNA,ENA,SAM CC 13 15 18 SAF A0 07 13 26 ME,EA,E 35 31 18 14 WNA,ENA,SAM CD 13 15 50 SAF D4 13 13 58 SAF,ME,EA 34 32 19 2 WNA,EA,ENA 3C 32 16 22 H A4 23 14 14 SAF,A 35 32 19 18 WNA,EA,ENA CC 10 18 14 SAF AC 11 14 46 A,EA 34 20 20 22 WNA,EA,ENA CC 05 19 34 SAF AD 11 15 2 A,EA 38 04 21 26 I CD 05 19 50 SAF A0 28 16 6 ME,EA,E 34 23 21 42 WNA,EA,ENA AC 10 20 6 I 38 11 17 10 H 35 13 22 30 WNA,EA,ENA CC 15 21 42 SAF A4 02 19 2 SAF D4 13 22 46 WNA,EA,ENA CD 15 22 14 SAF AC 10 20 6 A 3D 04 23 34 A,EA CC 09 23 18 SAF 38 04 21 26 H 38 02 23 50 I 3D 04 23 34 H,EA 38 02 23 50 H GPS Schedule no 54 (30 April 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 16 0 10 WNA,ENA,E A4 30 0 10 I F8 03 0 10 SAM A0 29 0 26 I,EA,E CC 26 0 26 A 68 19 0 26 ENA BC 18 0 58 SAF,I BC 18 0 58 ME,I 18 03 0 42 WNA,ENA,E A0 21 2 18 I,EA,E CC 12 1 30 A 18 06 0 58 WNA,ENA,E A1 21 2 34 I,EA,E CA 31 1 46 SAM 69 19 1 14 ENA 74 19 2 50 WNA,ENA,E CC 30 2 18 A 34 13 1 30 WNA,H,ENA 75 19 3 6 WNA,ENA,E CA 32 2 50 SAM CA 31 1 46 SAF A0 18 3 22 I,EA,E CC 29 3 22 A F8 11 2 2 SAM A0 22 3 54 I,EA,E A4 14 3 38 I FB 11 2 18 SAM A1 22 4 10 I,EA,E CD 29 3 54 A FC 11 2 34 SAM A2 22 4 26 I,EA,E CC 16 6 46 A CA 32 2 50 SAF A3 22 4 54 I,EA,E BC 23 7 34 ME,E,SAM FD 11 3 6 SAM 74 11 5 10 WNA,ENA,E BD 23 7 50 ME,E,SAM FE 11 3 22 SAM 75 11 5 26 WNA,ENA,E BC 13 8 6 ME,E,SAM 18 07 3 38 WNA,ENA A0 14 5 58 I,EA,E CC 06 8 22 A F8 07 3 54 SAM A1 14 6 14 I,EA,E CC 03 8 38 A FB 07 4 10 SAM BC 23 7 34 SAF,E,SAM BD 13 8 54 ME,E,SAM FC 07 4 26 SAM BD 23 7 50 SAF,E,SAM CD 03 9 10 A 18 08 4 54 WNA,ENA BC 13 8 6 SAF,E,SAM D4 03 9 26 A FD 07 5 10 SAM A0 32 8 22 I,EA,E CC 19 9 42 A FE 07 5 26 SAM A1 32 8 38 I,EA,E BC 32 9 58 ME,I,EA FE 07 5 42 SAM BD 13 8 54 SAF,E,SAM BD 32 10 14 ME,I,EA FE 07 5 58 SAM 74 04 9 26 WNA,ENA,E BC 08 11 18 ME,E,SAM 34 04 6 14 WNA,H,ENA 75 04 9 42 WNA,ENA,E CC 11 12 6 A F8 08 6 30 SAM BC 32 9 58 SAF,I,EA CD 11 12 38 A 35 04 6 46 WNA,H,ENA BD 32 10 14 SAF,I,EA D4 11 12 54 A F8 28 7 2 SAM A0 23 11 2 I,EA,E CC 20 13 26 A BC 23 7 34 SAF,ME,E BC 08 11 18 SAF,E,SAM CD 20 13 42 A BD 23 7 50 SAF,ME,E 74 10 11 34 WNA,ENA,E D4 13 13 58 ME,I,EA BC 13 8 6 SAF,ME,E 75 10 11 50 WNA,ENA,E A4 23 14 14 I,A BD 13 8 54 SAF,ME,E 74 05 12 54 WNA,ENA,E CC 13 15 18 A BC 08 11 18 SAF,ME,E A0 07 13 26 I,EA,E BC 05 15 34 ME,E,SAM D4 29 13 26 WNA,H,ENA D4 13 13 58 SAF,I,EA CD 13 15 50 A D5 29 13 42 WNA,H,ENA 74 15 14 46 WNA,ENA,E CC 10 18 14 A BC 05 15 34 SAF,ME,E 75 15 15 2 WNA,ENA,E BC 26 18 30 ME,E,SAM 34 24 15 50 WNA,H,ENA BC 05 15 34 SAF,E,SAM BD 26 18 46 ME,E,SAM 74 09 16 38 WNA,ME,ENA,E A0 28 16 6 I,EA,E A4 02 19 2 I 18 18 16 54 WNA,ENA,E 74 26 16 22 WNA,ENA,E D4 26 19 18 ME,E,SAM 19 18 17 26 WNA,ENA,E 74 09 16 38 WNA,ENA,E,SAM CC 05 19 34 A 34 31 17 58 WNA,H,ENA BC 26 18 30 SAF,E,SAM CD 05 19 50 A 35 31 18 14 WNA,H,ENA BD 26 18 46 SAF,E,SAM BC 29 20 22 ME,E,SAM BC 26 18 30 SAF,ME,E D4 26 19 18 SAF,E,SAM BD 29 20 38 ME,E,SAM BD 26 18 46 SAF,ME,E BC 29 20 22 SAF,E,SAM CC 15 21 42 A D4 26 19 18 SAF,ME,E BD 29 20 38 SAF,E,SAM CD 15 22 14 A BC 29 20 22 SAF,ME,E 74 31 21 58 WNA,ENA,E BC 24 23 2 ME,E,SAM BD 29 20 38 SAF,ME,E BC 24 23 2 SAF,E,SAM CC 09 23 18 A BC 24 23 2 SAF,ME,E BD 24 23 34 SAF,E,SAM BD 24 23 34 ME,E,SAM BD 24 23 34 SAF,ME,E BC 31 23 50 SAF,E,SAM BC 31 23 50 ME,E,SAM BC 31 23 50 SAF,ME,E