27 October 2011 FA/GPSW.408 Dear Colleagues, Please find enclosed tracking schedule No. 57 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 55868 (03 November 2011) 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, BIPM Time 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 57 * * for implementation on MJD 55868 (03 November 2011) 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, 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 5, 2010, available in the BIPM web site); 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 57 ( 3 November 2011) *** Europe *** Class PRN Start Connects h m 74 26 0 2 WNA,ME,ENA BC 28 0 18 SAF,ME,I A0 08 0 50 ME,I,EA BC 05 1 6 SAF,ME,SAM A1 08 1 22 ME,I,EA 74 15 1 38 WNA,ME,ENA BD 05 1 54 SAF,ME,SAM A0 28 2 10 ME,I,EA 18 09 2 26 WNA,ENA,SAM A1 28 2 42 ME,I,EA A2 28 2 58 ME,I,EA A0 17 3 14 ME,I,EA 18 18 3 30 WNA,ENA,SAM 19 18 3 46 WNA,ENA,SAM A1 17 4 2 ME,I,EA A2 17 4 34 ME,I,EA A0 02 6 42 ME,I,EA A1 02 7 14 ME,I,EA A2 02 7 30 ME,I,EA A3 02 7 46 ME,I,EA 74 31 8 18 WNA,ME,ENA 74 30 8 34 WNA,ME,ENA A0 29 9 54 ME,I,EA A1 29 10 10 ME,I,EA 74 16 10 58 WNA,ME,ENA 74 03 11 46 WNA,ME,ENA BC 16 12 50 SAF,ME,SAM 74 19 13 6 WNA,ME,ENA BD 16 13 22 SAF,ME,SAM 18 11 14 10 WNA,ENA,SAM 18 01 14 26 WNA,ENA,SAM A0 22 14 58 ME,I,EA 19 01 15 14 WNA,ENA,SAM 74 01 15 30 WNA,ME,ENA BC 23 17 18 SAF,ME,SAM BD 23 18 6 SAF,ME,SAM BC 13 18 22 SAF,ME,SAM BD 13 18 54 SAF,ME,SAM D4 13 19 10 SAF,ME,SAM 74 04 19 42 WNA,ME,ENA 75 04 19 58 WNA,ME,ENA 74 10 20 30 WNA,ME,ENA 75 10 20 46 WNA,ME,ENA BC 08 21 18 SAF,ME,SAM BD 08 21 34 SAF,ME,SAM BC 04 21 50 SAF,ME,SAM 74 05 22 54 WNA,ME,ENA 75 05 23 10 WNA,ME,ENA GPS Schedule no 57 ( 3 November 2011) *** 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 26 0 2 WNA,ME,E 74 26 0 2 ME,ENA,E 34 06 0 34 WNA,H 34 18 0 18 WNA,H 34 18 0 18 H,ENA A0 08 0 50 ME,I,E 35 18 0 50 WNA,H 34 06 0 34 H,EA 35 06 1 6 WNA,H 68 09 1 22 SAM 35 18 0 50 H,ENA A1 08 1 22 ME,I,E 74 15 1 38 WNA,ME,E 35 06 1 6 H,EA AC 01 1 38 I,A 18 21 2 10 WNA,SAM 74 15 1 38 ME,ENA,E AD 01 1 54 I,A 18 09 2 26 WNA,E,SAM 18 21 2 10 ENA,SAM A0 28 2 10 ME,I,E 19 21 2 42 WNA,SAM 18 09 2 26 ENA,E,SAM 3C 32 2 26 A,H 34 14 3 14 WNA,H 19 21 2 42 ENA,SAM A1 28 2 42 ME,I,E 18 18 3 30 WNA,E,SAM 34 14 3 14 H,ENA A2 28 2 58 ME,I,E 19 18 3 46 WNA,E,SAM 18 18 3 30 ENA,E,SAM A0 17 3 14 ME,I,E 68 18 4 2 SAM 19 18 3 46 ENA,E,SAM 3C 20 3 30 A,H 34 31 4 18 WNA,H,SAM 34 31 4 18 H,ENA,SAM A1 17 4 2 ME,I,E 35 31 4 34 WNA,H,SAM 35 31 4 34 H,ENA,SAM A2 17 4 34 ME,I,E 18 22 5 6 WNA,SAM 34 01 4 50 H,EA 34 01 4 50 WNA,H 34 32 5 22 WNA,H,EA 18 22 5 6 ENA,SAM 34 32 5 22 WNA,H,ENA 68 22 5 38 SAM 34 32 5 22 H,EA,ENA 3C 23 5 54 A,H 34 20 6 26 WNA,H,EA 34 20 6 26 H,EA,ENA AC 10 6 10 I,A 34 23 8 2 WNA,H,EA 34 23 8 2 H,EA,ENA 34 20 6 26 WNA,H,ENA 74 31 8 18 WNA,ME,E 74 31 8 18 ME,ENA,E A0 02 6 42 ME,I,E 74 30 8 34 WNA,ME,E 74 30 8 34 ME,ENA,E 3C 13 6 58 A,H 34 13 8 50 WNA,H,EA 34 13 8 50 H,EA,ENA A1 02 7 14 ME,I,E 35 13 9 6 WNA,H,EA 35 13 9 6 H,EA,ENA A2 02 7 30 ME,I,E 34 07 10 26 WNA,H,EA 34 07 10 26 H,EA,ENA A3 02 7 46 ME,I,E 74 16 10 58 WNA,ME,E 74 16 10 58 ME,ENA,E 34 23 8 2 WNA,H,ENA 74 03 11 46 WNA,ME,E 74 03 11 46 ME,ENA,E 34 13 8 50 WNA,H,ENA 34 08 12 2 WNA,H,EA 34 08 12 2 H,EA,ENA 35 13 9 6 WNA,H,ENA 74 19 13 6 WNA,ME,E 74 19 13 6 ME,ENA,E 3C 04 9 22 A,H 18 11 14 10 WNA,E,SAM 18 11 14 10 ENA,E,SAM A0 29 9 54 ME,I,E 18 01 14 26 WNA,E,SAM 18 01 14 26 ENA,E,SAM A1 29 10 10 ME,I,E 19 01 15 14 WNA,E,SAM 19 01 15 14 ENA,E,SAM 34 07 10 26 WNA,H,ENA 74 01 15 30 WNA,ME,E 74 01 15 30 ME,ENA,E 3C 02 10 42 A,H 34 04 16 14 WNA,H,SAM 34 04 16 14 H,ENA,SAM 3D 02 10 58 A,H 35 04 16 30 WNA,H,SAM 35 04 16 30 H,ENA,SAM D4 02 11 14 A,H D4 04 16 46 WNA,H,SAM D4 04 16 46 H,ENA,SAM 34 08 12 2 WNA,H,ENA 34 09 17 2 WNA,H,EA 34 09 17 2 H,EA,ENA BC 29 12 18 SAF,ME,I 34 12 18 6 WNA,H,EA 34 12 18 6 H,EA,ENA 3C 05 13 6 A,H 35 12 18 22 WNA,H,EA 35 12 18 22 H,EA,ENA 3D 05 13 38 A,H 34 02 18 38 WNA,H 34 02 18 38 H,ENA A0 22 14 58 ME,I,E 34 25 19 26 WNA,H,EA 34 25 19 26 H,EA,ENA 3C 12 15 14 A,H 74 04 19 42 WNA,ME,E 74 04 19 42 ME,ENA,E 3D 12 15 58 A,H 75 04 19 58 WNA,ME,E 75 04 19 58 ME,ENA,E BC 31 16 46 SAF,ME,I 74 10 20 30 WNA,ME,E 74 10 20 30 ME,ENA,E 34 09 17 2 WNA,H,ENA 75 10 20 46 WNA,ME,E 75 10 20 46 ME,ENA,E 34 12 18 6 WNA,H,ENA 34 29 21 2 WNA,H,EA 34 29 21 2 H,EA,ENA 35 12 18 22 WNA,H,ENA 74 05 22 54 WNA,ME,E 74 05 22 54 ME,ENA,E 34 25 19 26 WNA,H,ENA 75 05 23 10 WNA,ME,E 75 05 23 10 ME,ENA,E BC 32 20 14 SAF,ME,I 35 29 23 42 WNA,H,SAM 35 29 23 42 H,ENA,SAM 34 29 21 2 WNA,H,ENA GPS Schedule no 57 ( 3 November 2011) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3B 29 0 2 SAM AC 11 0 2 I AC 11 0 2 A 34 18 0 18 WNA,ENA A4 23 0 34 SAF,I BC 28 0 18 SAF,ME,E 34 06 0 34 WNA,EA AD 11 1 6 I A4 23 0 34 SAF,A 35 18 0 50 WNA,ENA 3C 16 1 22 H A0 08 0 50 ME,EA,E 35 06 1 6 WNA,EA AC 01 1 38 I,EA AD 11 1 6 A 3C 16 1 22 A AD 01 1 54 I,EA A1 08 1 22 ME,EA,E 3C 32 2 26 A,EA CC 13 2 10 SAF AC 01 1 38 A,EA 34 14 3 14 WNA,ENA 3C 32 2 26 H,EA AD 01 1 54 A,EA 3C 20 3 30 A,EA CC 10 3 14 SAF A0 28 2 10 ME,EA,E 38 01 3 46 I 3C 20 3 30 H,EA F1 07 2 26 I 34 31 4 18 WNA,ENA,SAM CD 10 4 2 SAF A1 28 2 42 ME,EA,E 35 31 4 34 WNA,ENA,SAM AC 08 4 18 I A2 28 2 58 ME,EA,E 34 01 4 50 WNA,EA 3C 23 5 54 H,EA A0 17 3 14 ME,EA,E 34 32 5 22 WNA,EA,ENA AC 10 6 10 I,EA F1 08 3 30 I 3C 23 5 54 A,EA CC 05 6 26 SAF 38 01 3 46 H 34 20 6 26 WNA,EA,ENA CC 26 6 42 SAF A1 17 4 2 ME,EA,E 3C 13 6 58 A,EA 3C 13 6 58 H,EA AC 08 4 18 A 34 23 8 2 WNA,EA,ENA CD 26 7 14 SAF A2 17 4 34 ME,EA,E 34 13 8 50 WNA,EA,ENA CC 15 8 18 SAF F1 04 4 50 I 35 13 9 6 WNA,EA,ENA CD 15 8 34 SAF A4 02 5 6 SAF 3C 04 9 22 A,EA D4 15 8 50 SAF BC 02 5 22 SAF,ME 3D 04 9 54 A 3C 04 9 22 H,EA BD 02 5 38 SAF,ME 34 07 10 26 WNA,EA,ENA 3D 04 9 54 H F1 02 5 54 I 3C 02 10 42 A,EA CC 09 10 10 SAF AC 10 6 10 A,EA 3D 02 10 58 A,EA 3C 02 10 42 H,EA F2 02 6 26 I D4 02 11 14 A,EA 3D 02 10 58 H,EA A0 02 6 42 ME,EA,E 34 08 12 2 WNA,EA,ENA D4 02 11 14 H,EA FB 02 6 58 I 3C 05 13 6 A,EA CC 12 11 46 SAF A1 02 7 14 ME,EA,E 3D 05 13 38 A,EA CC 25 12 34 SAF A2 02 7 30 ME,EA,E D4 05 14 26 A 3C 05 13 6 H,EA A3 02 7 46 ME,EA,E 3C 12 15 14 A,EA 3D 05 13 38 H,EA FC 02 8 2 I 3D 12 15 58 A,EA CC 29 14 10 SAF FD 02 8 18 I 34 04 16 14 WNA,ENA,SAM D4 05 14 26 H FE 02 8 34 I 35 04 16 30 WNA,ENA,SAM 3C 12 15 14 H,EA FE 02 8 50 I D4 04 16 46 WNA,ENA,SAM 3D 12 15 58 H,EA F1 05 9 6 I 34 09 17 2 WNA,EA,ENA CC 30 16 14 SAF F2 05 9 22 I 38 25 17 18 I 3C 29 17 50 H A0 29 9 54 ME,EA,E 3C 29 17 50 A A4 16 18 38 SAF,I A1 29 10 10 ME,EA,E 34 12 18 6 WNA,EA,ENA CC 03 19 26 SAF BC 29 12 18 SAF,ME,EA 35 12 18 22 WNA,EA,ENA CC 19 19 58 SAF BC 14 13 54 SAF,ME 34 02 18 38 WNA,ENA 3C 21 20 14 H A0 22 14 58 ME,EA,E 38 14 18 54 I CD 19 20 30 SAF BC 31 16 46 SAF,ME,EA 34 25 19 26 WNA,EA,ENA D4 19 20 46 SAF 38 25 17 18 H 3C 21 20 14 A CC 11 22 6 SAF A4 16 18 38 SAF,A 38 30 20 46 I CD 11 22 22 SAF 38 14 18 54 H 34 29 21 2 WNA,EA,ENA CC 01 22 38 SAF BC 32 20 14 SAF,ME,EA 38 06 23 10 I CC 20 23 26 SAF 38 30 20 46 H 35 29 23 42 WNA,ENA,SAM CD 20 23 42 SAF 38 06 23 10 H GPS Schedule no 57 ( 3 November 2011) *** 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 26 0 2 WNA,ENA,E BC 28 0 18 ME,I,E 3B 29 0 2 H BC 28 0 18 SAF,I,E A4 23 0 34 I,A F8 02 0 18 SAM A0 08 0 50 I,EA,E CA 02 0 50 SAM FB 02 0 34 SAM BC 05 1 6 SAF,E,SAM BC 05 1 6 ME,E,SAM CA 02 0 50 SAF A1 08 1 22 I,EA,E BD 05 1 54 ME,E,SAM BC 05 1 6 SAF,ME,E 74 15 1 38 WNA,ENA,E CC 13 2 10 A 68 09 1 22 ENA BD 05 1 54 SAF,E,SAM CC 10 3 14 A F8 09 1 38 SAM A0 28 2 10 I,EA,E CD 10 4 2 A BD 05 1 54 SAF,ME,E A1 28 2 42 I,EA,E CA 29 4 50 SAM 18 21 2 10 WNA,ENA A2 28 2 58 I,EA,E A4 02 5 6 I 18 09 2 26 WNA,ENA,E A0 17 3 14 I,EA,E BC 02 5 22 ME,I 19 21 2 42 WNA,ENA A1 17 4 2 I,EA,E BD 02 5 38 ME,I F8 12 2 58 SAM A2 17 4 34 I,EA,E CB 29 5 54 SAM FB 12 3 14 SAM BC 02 5 22 SAF,I CC 05 6 26 A 18 18 3 30 WNA,ENA,E BD 02 5 38 SAF,I CC 26 6 42 A 19 18 3 46 WNA,ENA,E A0 02 6 42 I,EA,E CD 26 7 14 A 68 18 4 2 ENA A1 02 7 14 I,EA,E CC 15 8 18 A 34 31 4 18 WNA,H,ENA A2 02 7 30 I,EA,E CD 15 8 34 A 35 31 4 34 WNA,H,ENA A3 02 7 46 I,EA,E D4 15 8 50 A CA 29 4 50 SAF 74 31 8 18 WNA,ENA,E CC 09 10 10 A 18 22 5 6 WNA,ENA 74 30 8 34 WNA,ENA,E CC 12 11 46 A F8 18 5 22 SAM A0 29 9 54 I,EA,E BC 29 12 18 ME,I,EA 68 22 5 38 ENA A1 29 10 10 I,EA,E CC 25 12 34 A CB 29 5 54 SAF 74 16 10 58 WNA,ENA,E BC 16 12 50 ME,E,SAM FB 18 6 10 SAM 74 03 11 46 WNA,ENA,E BD 16 13 22 ME,E,SAM FC 18 6 26 SAM BC 29 12 18 SAF,I,EA BC 14 13 54 ME,I FD 18 6 42 SAM BC 16 12 50 SAF,E,SAM CC 29 14 10 A F8 14 6 58 SAM 74 19 13 6 WNA,ENA,E CC 30 16 14 A F8 06 7 14 SAM BD 16 13 22 SAF,E,SAM BC 31 16 46 ME,I,EA FB 06 7 30 SAM BC 14 13 54 SAF,I BC 23 17 18 ME,E,SAM F8 03 7 46 SAM A0 22 14 58 I,EA,E BD 23 18 6 ME,E,SAM FB 03 8 2 SAM 74 01 15 30 WNA,ENA,E BC 13 18 22 ME,E,SAM BC 16 12 50 SAF,ME,E BC 31 16 46 SAF,I,EA A4 16 18 38 I,A BD 16 13 22 SAF,ME,E BC 23 17 18 SAF,E,SAM BD 13 18 54 ME,E,SAM 18 11 14 10 WNA,ENA,E BD 23 18 6 SAF,E,SAM D4 13 19 10 ME,E,SAM 18 01 14 26 WNA,ENA,E BC 13 18 22 SAF,E,SAM CC 03 19 26 A 19 01 15 14 WNA,ENA,E BD 13 18 54 SAF,E,SAM CC 19 19 58 A 34 04 16 14 WNA,H,ENA D4 13 19 10 SAF,E,SAM BC 32 20 14 ME,I,EA 35 04 16 30 WNA,H,ENA 74 04 19 42 WNA,ENA,E CD 19 20 30 A D4 04 16 46 WNA,H,ENA 75 04 19 58 WNA,ENA,E D4 19 20 46 A BC 23 17 18 SAF,ME,E BC 32 20 14 SAF,I,EA BC 08 21 18 ME,E,SAM BD 23 18 6 SAF,ME,E 74 10 20 30 WNA,ENA,E BD 08 21 34 ME,E,SAM BC 13 18 22 SAF,ME,E 75 10 20 46 WNA,ENA,E BC 04 21 50 ME,E,SAM BD 13 18 54 SAF,ME,E BC 08 21 18 SAF,E,SAM CC 11 22 6 A D4 13 19 10 SAF,ME,E BD 08 21 34 SAF,E,SAM CD 11 22 22 A BC 08 21 18 SAF,ME,E BC 04 21 50 SAF,E,SAM CC 01 22 38 A BD 08 21 34 SAF,ME,E 74 05 22 54 WNA,ENA,E CC 20 23 26 A BC 04 21 50 SAF,ME,E 75 05 23 10 WNA,ENA,E CD 20 23 42 A 35 29 23 42 WNA,H,ENA