28 October 2013 FA/GPSW.412 Dear Colleagues, Please find enclosed tracking schedule No. 61 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 56596 (31 October 2013) 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\schgps) 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 61 * * for implementation on MJD 56596 (31 October 2013) 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, ESTC, 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, MTC, NIS, SASO* South Africa SAF KEBS, ZA South America SAM IGNA, INTI, INXE, 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 7, 2012, 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. SASO : Saudi Standards, Metrology and Quality Organisation, Riyadh, Saudi Arabia. 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 61 (31 October 2013) *** Europe *** Class PRN Start Connects h m 74 15 0 10 WNA,ME,ENA A0 28 0 26 ME,I,EA A1 28 0 42 ME,I,EA A2 28 0 58 ME,I,EA BC 26 1 14 SAF,ME,I A0 17 1 30 ME,I,EA A1 17 2 18 ME,I,EA A2 17 2 50 ME,I,EA BC 29 4 10 SAF,ME,SAM BC 24 4 26 SAF,ME,I BD 29 4 42 SAF,ME,SAM D4 29 4 58 SAF,ME,SAM D5 29 5 14 SAF,ME,SAM A0 02 5 30 ME,I,EA A1 02 5 46 ME,I,EA 74 31 6 18 WNA,ME,ENA BC 12 6 34 SAF,ME,I,EA BC 25 7 22 SAF,ME,I A0 29 7 54 ME,I,EA A1 29 8 26 ME,I,EA A2 29 8 42 ME,I,EA 74 16 9 14 WNA,ME,ENA 74 06 9 30 WNA,ME,ENA,SAM 74 27 10 2 WNA,ME,ENA 74 03 10 34 WNA,ME,ENA A0 21 10 50 ME,I,EA BC 16 11 6 SAF,ME,SAM 74 19 11 22 WNA,ME,ENA BD 16 11 38 SAF,ME,SAM A0 22 12 58 ME,I,EA BC 32 13 14 SAF,ME,SAM BD 32 13 30 SAF,ME,SAM BC 23 15 50 SAF,ME,SAM 18 17 16 38 WNA,ENA,SAM BC 13 17 10 SAF,ME,SAM 74 04 17 58 WNA,ME,ENA 75 04 18 14 WNA,ME,ENA 74 10 18 46 WNA,ME,ENA 75 10 19 2 WNA,ME,ENA BC 04 20 6 SAF,ME,SAM BC 08 20 22 SAF,ME,SAM BC 09 20 38 SAF,ME,SAM 74 05 21 10 WNA,ME,ENA 75 05 21 26 WNA,ME,ENA 74 26 22 14 WNA,ME,ENA BC 05 23 18 SAF,ME,SAM A0 09 23 34 ME,I,EA 75 15 23 50 WNA,ME,ENA GPS Schedule no 61 (31 October 2013) *** 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 15 0 10 WNA,ME,E 74 15 0 10 ME,ENA,E A0 28 0 26 ME,I,E 18 21 0 26 WNA,SAM 18 21 0 26 ENA,SAM A1 28 0 42 ME,I,E 68 21 0 58 SAM 34 14 1 30 H,ENA A2 28 0 58 ME,I,E 34 14 1 30 WNA,H 34 31 2 34 H,ENA,SAM A0 17 1 30 ME,I,E 68 18 2 2 SAM 35 31 2 50 H,ENA,SAM 3C 20 1 46 A,H 69 18 2 18 SAM D4 31 3 6 H,ENA,SAM 3D 20 2 2 A,H 34 31 2 34 WNA,H,SAM 34 32 3 22 H,EA A1 17 2 18 ME,I,E 35 31 2 50 WNA,H,SAM 35 32 3 38 H,EA,ENA A2 17 2 50 ME,I,E D4 31 3 6 WNA,H,SAM 34 01 3 54 H,EA 34 32 3 22 WNA,H 68 22 3 22 SAM 34 20 4 10 H,EA 35 32 3 38 WNA,H,ENA 35 32 3 38 WNA,H,EA 35 20 4 26 H,EA 34 01 3 54 WNA,H 69 22 3 54 SAM D4 20 4 58 H,EA,ENA 34 20 4 10 WNA,H D4 20 4 58 WNA,H,EA 34 23 6 2 H,EA,ENA 35 20 4 26 WNA,H 34 23 6 2 WNA,H,EA 74 31 6 18 ME,ENA,E D4 20 4 58 WNA,H,ENA 74 31 6 18 WNA,ME,E D4 32 6 34 H,ENA,SAM AC 17 5 14 I,A,H D4 32 6 34 WNA,H,SAM D5 32 6 50 H,ENA,SAM A0 02 5 30 ME,I,E D5 32 6 50 WNA,H,SAM 34 13 7 22 H,EA,ENA A1 02 5 46 ME,I,E 34 13 7 22 WNA,H,EA 35 13 7 38 H,EA,ENA 34 23 6 2 WNA,H,ENA 35 13 7 38 WNA,H,EA 35 23 8 42 H,ENA,SAM BC 12 6 34 SAF,ME,I,E 68 06 7 54 SAM 74 16 9 14 ME,ENA,E 34 13 7 22 WNA,H,ENA 35 23 8 42 WNA,H,SAM 74 06 9 30 ME,ENA,E,SAM 35 13 7 38 WNA,H,ENA 74 16 9 14 WNA,ME,E 34 08 9 46 H,EA A0 29 7 54 ME,I,E 74 06 9 30 WNA,ME,E,SAM 74 27 10 2 ME,ENA,E 3C 04 8 10 A,H 74 27 10 2 WNA,ME,E 35 08 10 18 H,EA,ENA A1 29 8 26 ME,I,E 35 08 10 18 WNA,H,EA 74 03 10 34 ME,ENA,E A2 29 8 42 ME,I,E 74 03 10 34 WNA,ME,E 74 19 11 22 ME,ENA,E 3C 02 8 58 A,H 74 19 11 22 WNA,ME,E 34 09 12 42 H,ENA,SAM 3D 02 9 14 A,H 34 09 12 42 WNA,H,SAM 34 17 13 30 H,ENA 34 08 9 46 WNA,H 34 17 13 30 WNA,H 34 04 14 18 H,ENA,SAM 35 08 10 18 WNA,H,ENA 34 04 14 18 WNA,H,SAM 35 04 14 34 H,ENA,SAM A0 21 10 50 ME,I,E 35 04 14 34 WNA,H,SAM D4 04 14 50 H,ENA,SAM 3C 05 11 6 A,H D4 04 14 50 WNA,H,SAM 34 24 15 18 H,EA,ENA AC 24 11 22 I,A 34 24 15 18 WNA,H,EA 34 12 16 22 H,EA,ENA A0 22 12 58 ME,I,E 34 12 16 22 WNA,H,EA 18 17 16 38 ENA,E,SAM 3C 12 13 14 A,H 18 17 16 38 WNA,E,SAM 35 12 17 26 H,ENA 3D 12 13 46 A,H 35 12 17 26 WNA,H D4 12 17 42 H,ENA D4 12 14 2 A,H D4 12 17 42 WNA,H 74 04 17 58 ME,ENA,E AC 18 14 50 I,A 74 04 17 58 WNA,ME,E 75 04 18 14 ME,ENA,E 34 24 15 18 WNA,H,ENA 75 04 18 14 WNA,ME,E 74 10 18 46 ME,ENA,E AC 22 15 34 I,A 74 10 18 46 WNA,ME,E 75 10 19 2 ME,ENA,E AD 22 15 50 I,A 75 10 19 2 WNA,ME,E 74 05 21 10 ME,ENA,E 34 12 16 22 WNA,H,ENA 74 05 21 10 WNA,ME,E 75 05 21 26 ME,ENA,E 38 31 18 14 I,H 75 05 21 26 WNA,ME,E 34 29 21 42 H,ENA,SAM D4 32 18 30 SAF,ME,I 34 29 21 42 WNA,H,SAM 35 29 21 58 H,ENA,SAM AC 06 19 18 I,A 35 29 21 58 WNA,H,SAM 74 26 22 14 ME,ENA,E AD 06 19 34 I,A 74 26 22 14 WNA,ME,E 34 18 23 2 H,ENA AE 06 19 50 I,A 34 18 23 2 WNA,H 80 16 23 18 A,H,EA 80 16 23 18 WNA,A,H 75 15 23 50 WNA,ME,E 75 15 23 50 ME,ENA,E A0 09 23 34 ME,I,E GPS Schedule no 61 (31 October 2013) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3C 16 0 26 A CC 13 0 10 SAF F1 07 0 10 I 34 14 1 30 WNA,ENA 3C 16 0 26 H A0 28 0 26 ME,EA,E 3C 20 1 46 A,EA CD 13 0 42 SAF A1 28 0 42 ME,EA,E 3D 20 2 2 A,EA 3C 20 1 46 H,EA A2 28 0 58 ME,EA,E 34 31 2 34 WNA,ENA,SAM 3D 20 2 2 H,EA BC 26 1 14 SAF,ME,E 35 31 2 50 WNA,ENA,SAM CC 10 2 18 SAF A0 17 1 30 ME,EA,E D4 31 3 6 WNA,ENA,SAM A4 09 2 34 SAF,I F1 08 1 46 I 34 32 3 22 WNA,EA CC 09 2 50 SAF F2 08 2 2 I 35 32 3 38 WNA,EA,ENA AC 17 5 14 I,H,EA A1 17 2 18 ME,EA,E 34 01 3 54 WNA,EA CC 26 5 30 SAF A4 09 2 34 SAF,A 34 20 4 10 WNA,EA 3C 07 6 18 H A2 17 2 50 ME,EA,E 35 20 4 26 WNA,EA CC 15 6 50 SAF F1 04 3 6 I 38 17 4 42 I 3C 08 7 6 H F2 04 3 22 I D4 20 4 58 WNA,EA,ENA CD 15 7 38 SAF F1 02 3 38 I AC 17 5 14 I,A,EA 3C 04 8 10 H,EA F2 02 3 54 I 34 23 6 2 WNA,EA,ENA CC 24 8 26 SAF FB 02 4 10 I 3C 07 6 18 A 3C 02 8 58 H,EA BC 24 4 26 SAF,ME,E D4 32 6 34 WNA,ENA,SAM 3D 02 9 14 H,EA 38 17 4 42 H D5 32 6 50 WNA,ENA,SAM CC 12 9 46 SAF FC 02 4 58 I 3C 08 7 6 A CD 12 10 2 SAF AC 17 5 14 A,H,EA 34 13 7 22 WNA,EA,ENA 3C 05 11 6 H,EA A0 02 5 30 ME,EA,E 35 13 7 38 WNA,EA,ENA AC 24 11 22 I,EA A1 02 5 46 ME,EA,E 3C 04 8 10 A,EA CC 29 12 10 SAF FD 02 6 2 I 35 23 8 42 WNA,ENA,SAM 3C 12 13 14 H,EA FE 02 6 18 I 3C 02 8 58 A,EA 3D 12 13 46 H,EA BC 12 6 34 SAF,ME,EA,E 3D 02 9 14 A,EA D4 12 14 2 H,EA BC 25 7 22 SAF,ME,E 34 08 9 46 WNA,EA AC 18 14 50 I,EA A0 29 7 54 ME,EA,E 35 08 10 18 WNA,EA,ENA AC 22 15 34 I,EA A4 25 8 10 SAF 3C 05 11 6 A,EA AD 22 15 50 I,EA A1 29 8 26 ME,EA,E 34 09 12 42 WNA,ENA,SAM CC 16 16 6 SAF A2 29 8 42 ME,EA,E 3C 12 13 14 A,EA CC 06 16 22 SAF A0 21 10 50 ME,EA,E 34 17 13 30 WNA,ENA CC 27 16 38 SAF AC 24 11 22 A,EA 3D 12 13 46 A,EA A4 16 16 54 SAF,I A0 22 12 58 ME,EA,E D4 12 14 2 A,EA CC 03 17 42 SAF AC 18 14 50 A,EA 34 04 14 18 WNA,ENA,SAM CD 03 17 58 SAF AC 22 15 34 A,EA 35 04 14 34 WNA,ENA,SAM CC 19 18 14 SAF AD 22 15 50 A,EA D4 04 14 50 WNA,ENA,SAM CD 19 18 46 SAF 38 14 16 38 H 34 24 15 18 WNA,EA,ENA AC 06 19 18 I,EA A4 16 16 54 SAF,A 34 12 16 22 WNA,EA,ENA AD 06 19 34 I,EA 38 31 18 14 H,EA 38 14 16 38 I AE 06 19 50 I,EA D4 32 18 30 SAF,ME,EA 35 12 17 26 WNA,ENA CC 01 20 54 SAF AC 06 19 18 A,EA D4 12 17 42 WNA,ENA CC 20 21 58 SAF AD 06 19 34 A,EA 38 31 18 14 I,EA CD 20 22 14 SAF AE 06 19 50 A,EA 38 16 20 54 I A4 23 22 30 SAF,I 38 16 20 54 H 34 29 21 42 WNA,ENA,SAM A5 23 22 46 SAF,I A4 23 22 30 SAF,A 35 29 21 58 WNA,ENA,SAM CC 23 23 2 SAF A5 23 22 46 SAF,A 34 18 23 2 WNA,ENA 80 16 23 18 WNA,H,EA A0 09 23 34 ME,EA,E 80 16 23 18 WNA,A,EA A4 13 23 50 SAF,I A4 13 23 50 SAF,A GPS Schedule no 61 (31 October 2013) *** 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 15 0 10 WNA,ENA,E CC 13 0 10 A F8 12 0 10 SAM A0 28 0 26 I,EA,E CD 13 0 42 A 18 21 0 26 WNA,ENA A1 28 0 42 I,EA,E BC 26 1 14 ME,I,E FB 12 0 42 SAM A2 28 0 58 I,EA,E CC 10 2 18 A 68 21 0 58 ENA BC 26 1 14 SAF,I,E A4 09 2 34 I,A FC 12 1 14 SAM A0 17 1 30 I,EA,E CC 09 2 50 A FD 12 1 30 SAM A1 17 2 18 I,EA,E BC 29 4 10 ME,E,SAM FE 12 1 46 SAM A2 17 2 50 I,EA,E BC 24 4 26 ME,I,E 68 18 2 2 ENA BC 29 4 10 SAF,E,SAM BD 29 4 42 ME,E,SAM 69 18 2 18 ENA BC 24 4 26 SAF,I,E D4 29 4 58 ME,E,SAM 34 31 2 34 WNA,H,ENA BD 29 4 42 SAF,E,SAM D5 29 5 14 ME,E,SAM 35 31 2 50 WNA,H,ENA D4 29 4 58 SAF,E,SAM CC 26 5 30 A D4 31 3 6 WNA,H,ENA D5 29 5 14 SAF,E,SAM BC 12 6 34 ME,I,EA,E 68 22 3 22 ENA A0 02 5 30 I,EA,E CC 15 6 50 A F8 18 3 38 SAM A1 02 5 46 I,EA,E BC 25 7 22 ME,I,E 69 22 3 54 ENA 74 31 6 18 WNA,ENA,E CD 15 7 38 A BC 29 4 10 SAF,ME,E BC 12 6 34 SAF,I,EA,E A4 25 8 10 I FB 18 4 26 SAM BC 25 7 22 SAF,I,E CC 24 8 26 A BD 29 4 42 SAF,ME,E A0 29 7 54 I,EA,E CC 12 9 46 A D4 29 4 58 SAF,ME,E A1 29 8 26 I,EA,E CD 12 10 2 A D5 29 5 14 SAF,ME,E A2 29 8 42 I,EA,E BC 16 11 6 ME,E,SAM F8 14 5 30 SAM 74 16 9 14 WNA,ENA,E BD 16 11 38 ME,E,SAM F8 06 5 46 SAM 74 06 9 30 WNA,ENA,E,SAM CC 29 12 10 A FB 06 6 2 SAM 74 27 10 2 WNA,ENA,E BC 32 13 14 ME,E,SAM FC 06 6 18 SAM 74 03 10 34 WNA,ENA,E BD 32 13 30 ME,E,SAM D4 32 6 34 WNA,H,ENA A0 21 10 50 I,EA,E CA 13 15 34 SAM D5 32 6 50 WNA,H,ENA BC 16 11 6 SAF,E,SAM BC 23 15 50 ME,E,SAM F8 03 7 6 SAM 74 19 11 22 WNA,ENA,E CC 16 16 6 A 68 06 7 54 ENA BD 16 11 38 SAF,E,SAM CC 06 16 22 A 35 23 8 42 WNA,H,ENA A0 22 12 58 I,EA,E CC 27 16 38 A 74 06 9 30 WNA,ME,ENA,E BC 32 13 14 SAF,E,SAM A4 16 16 54 I,A BC 16 11 6 SAF,ME,E BD 32 13 30 SAF,E,SAM BC 13 17 10 ME,E,SAM BD 16 11 38 SAF,ME,E BC 23 15 50 SAF,E,SAM CC 03 17 42 A 34 09 12 42 WNA,H,ENA BC 13 17 10 SAF,E,SAM CD 03 17 58 A BC 32 13 14 SAF,ME,E 74 04 17 58 WNA,ENA,E CC 19 18 14 A BD 32 13 30 SAF,ME,E 75 04 18 14 WNA,ENA,E D4 32 18 30 ME,I,EA 34 04 14 18 WNA,H,ENA D4 32 18 30 SAF,I,EA CD 19 18 46 A 35 04 14 34 WNA,H,ENA 74 10 18 46 WNA,ENA,E BC 04 20 6 ME,E,SAM D4 04 14 50 WNA,H,ENA 75 10 19 2 WNA,ENA,E BC 08 20 22 ME,E,SAM CA 13 15 34 SAF BC 04 20 6 SAF,E,SAM BC 09 20 38 ME,E,SAM BC 23 15 50 SAF,ME,E BC 08 20 22 SAF,E,SAM CC 01 20 54 A 18 17 16 38 WNA,ENA,E BC 09 20 38 SAF,E,SAM CC 20 21 58 A BC 13 17 10 SAF,ME,E 74 05 21 10 WNA,ENA,E CD 20 22 14 A BC 04 20 6 SAF,ME,E 75 05 21 26 WNA,ENA,E A4 23 22 30 I,A BC 08 20 22 SAF,ME,E 74 26 22 14 WNA,ENA,E A5 23 22 46 I,A BC 09 20 38 SAF,ME,E BC 05 23 18 SAF,E,SAM CC 23 23 2 A 34 29 21 42 WNA,H,ENA A0 09 23 34 I,EA,E BC 05 23 18 ME,E,SAM 35 29 21 58 WNA,H,ENA 75 15 23 50 WNA,ENA,E A4 13 23 50 I,A BC 05 23 18 SAF,ME,E