22 April 2014 FA/GPSW.413 Dear Colleagues, Please find enclosed tracking schedule No. 62 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 56776 (29 April 2014) 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 62 * * for implementation on MJD 56776 (29 April 2014) 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. 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 62 (29 April 2014) *** Europe *** Class PRN Start Connects h m BC 32 0 10 SAF,ME,SAM A0 22 0 26 ME,I,EA 74 11 0 42 WNA,ME,ENA BD 32 0 58 SAF,ME,SAM A1 22 1 14 ME,I,EA A0 14 1 46 ME,I,EA A1 14 2 18 ME,I,EA BC 23 2 50 SAF,ME,SAM BD 23 3 18 SAF,ME,SAM A0 32 3 50 ME,I,EA A1 32 4 22 ME,I,EA A2 32 4 38 ME,I,EA BC 13 4 54 SAF,ME,SAM BD 13 5 10 SAF,ME,SAM 74 04 5 42 WNA,ME,ENA 75 04 5 58 WNA,ME,ENA BC 20 6 14 SAF,ME,I A0 23 6 30 ME,I,EA 74 10 6 46 WNA,ME,ENA BC 08 7 18 SAF,ME,SAM A1 23 7 34 ME,I,EA A0 13 7 50 ME,I,EA A1 13 8 6 ME,I,EA BC 09 8 22 SAF,ME,SAM BD 09 8 38 SAF,ME,SAM 74 05 8 54 WNA,ME,ENA 75 05 9 10 WNA,ME,ENA 74 26 9 58 WNA,ME,ENA 75 26 10 14 WNA,ME,ENA BC 05 10 46 SAF,ME,SAM A0 08 11 2 ME,I,EA 74 15 11 34 WNA,ME,ENA BD 05 11 50 SAF,ME,SAM A0 28 12 22 ME,I,EA 74 24 12 54 WNA,ME,ENA,SAM 18 14 16 6 WNA,ENA,SAM BC 29 16 54 SAF,ME,SAM BC 12 18 14 SAF,ME,I,EA 74 31 18 30 WNA,ME,ENA 74 16 20 38 WNA,ME,ENA 75 16 20 54 WNA,ME,ENA 74 27 21 42 WNA,ME,ENA 75 27 21 58 WNA,ME,ENA A0 21 22 14 ME,I,EA 74 03 22 30 WNA,ME,ENA BC 16 22 46 SAF,ME,SAM 74 19 23 2 WNA,ME,ENA 75 19 23 18 WNA,ME,ENA GPS Schedule no 62 (29 April 2014) *** 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 18 07 0 26 WNA,SAM 18 07 0 26 ENA,SAM A0 22 0 26 ME,I,E 74 11 0 42 WNA,ME,E 74 11 0 42 ME,ENA,E 3C 12 0 58 A,H 32 17 1 14 H 18 09 1 30 ENA,SAM A1 22 1 14 ME,I,E 18 09 1 30 WNA,SAM 34 04 2 2 H,ENA,SAM 3D 12 1 30 A,H 34 04 2 2 WNA,H,SAM 35 04 2 18 H,ENA,SAM A0 14 1 46 ME,I,E 35 04 2 18 WNA,H,SAM D4 04 2 34 H,ENA,SAM A1 14 2 18 ME,I,E D4 04 2 34 WNA,H,SAM 34 24 2 50 H,EA AC 18 2 34 I,A 34 12 4 6 WNA,H,EA 34 12 4 6 H,EA,ENA 34 24 2 50 WNA,H 32 02 4 22 H 34 25 5 10 H,EA AC 22 3 34 I,A 33 02 4 38 H 35 25 5 26 H,EA,ENA A0 32 3 50 ME,I,E 35 25 5 26 WNA,H,EA 74 04 5 42 ME,ENA,E 34 12 4 6 WNA,H,ENA 74 04 5 42 WNA,ME,E 75 04 5 58 ME,ENA,E A1 32 4 22 ME,I,E 75 04 5 58 WNA,ME,E 18 05 6 14 ENA,SAM A2 32 4 38 ME,I,E 18 05 6 14 WNA,SAM 19 05 6 30 ENA,SAM 34 25 5 10 WNA,H 19 05 6 30 WNA,SAM 74 10 6 46 ME,ENA,E 35 25 5 26 WNA,H,ENA 74 10 6 46 WNA,ME,E 34 29 7 2 H,EA,ENA 3C 14 5 42 A,H 34 29 7 2 WNA,H,EA 34 21 8 22 H,EA A0 23 6 30 ME,I,E 68 26 8 6 SAM 74 05 8 54 ME,ENA,E 34 29 7 2 WNA,H,ENA 74 05 8 54 WNA,ME,E 75 05 9 10 ME,ENA,E A1 23 7 34 ME,I,E 75 05 9 10 WNA,ME,E 35 29 9 42 H,ENA,SAM A0 13 7 50 ME,I,E 35 29 9 42 WNA,H,SAM 74 26 9 58 ME,ENA,E A1 13 8 6 ME,I,E 74 26 9 58 WNA,ME,E 75 26 10 14 ME,ENA,E 34 21 8 22 WNA,H 75 26 10 14 WNA,ME,E 74 15 11 34 ME,ENA,E AC 19 8 38 I,A 32 18 10 30 H 18 21 12 38 ENA,SAM AC 11 10 30 I,A 68 24 11 18 SAM 74 24 12 54 ME,ENA,E,SAM AD 11 10 46 I,A 74 15 11 34 WNA,ME,E 80 03 13 42 A,H A0 08 11 2 ME,I,E 18 21 12 38 WNA,SAM 34 31 14 14 H,ENA,SAM AC 01 11 18 I,A 74 24 12 54 WNA,ME,E,SAM 35 31 14 30 H,ENA,SAM AD 01 11 34 I,A 34 31 14 14 WNA,H,SAM 34 32 14 46 H,EA,ENA 3C 32 12 6 A,H 35 31 14 30 WNA,H,SAM 35 32 15 2 H,EA,ENA A0 28 12 22 ME,I,E 34 32 14 46 WNA,H,EA 34 01 15 18 H,EA 3C 20 13 26 A,H 35 32 15 2 WNA,H,EA 18 14 16 6 ENA,E,SAM BC 04 14 30 SAF,ME,I 18 14 16 6 WNA,E,SAM 34 20 16 22 H,EA,ENA 34 32 14 46 WNA,H,ENA 34 20 16 22 WNA,H,EA 34 23 17 10 H,EA 35 32 15 2 WNA,H,ENA 35 23 17 26 WNA,H,EA 35 23 17 26 H,EA,ENA 34 01 15 18 WNA,H D4 23 17 42 WNA,H,EA D4 23 17 42 H,EA,ENA AC 28 15 34 I,A D4 32 17 58 WNA,H,SAM D4 32 17 58 H,ENA,SAM AD 28 15 50 I,A 74 31 18 30 WNA,ME,E 74 31 18 30 ME,ENA,E 34 20 16 22 WNA,H,ENA 34 13 19 2 WNA,H,EA 34 13 19 2 H,EA,ENA 3C 13 16 54 A,H 34 07 20 22 WNA,H,EA 34 07 20 22 H,EA,ENA 34 23 17 10 WNA,H 74 16 20 38 WNA,ME,E 74 16 20 38 ME,ENA,E 35 23 17 26 WNA,H,ENA 75 16 20 54 WNA,ME,E 75 16 20 54 ME,ENA,E D4 23 17 42 WNA,H,ENA 74 27 21 42 WNA,ME,E 74 27 21 42 ME,ENA,E BC 12 18 14 SAF,ME,I,E 75 27 21 58 WNA,ME,E 75 27 21 58 ME,ENA,E 34 13 19 2 WNA,H,ENA 74 03 22 30 WNA,ME,E 74 03 22 30 ME,ENA,E 3C 04 19 34 A,H 74 19 23 2 WNA,ME,E 74 19 23 2 ME,ENA,E 3D 04 19 50 A,H 75 19 23 18 WNA,ME,E 75 19 23 18 ME,ENA,E 34 07 20 22 WNA,H,ENA 19 07 23 50 WNA,SAM 19 07 23 50 ENA,SAM A0 21 22 14 ME,I,E GPS Schedule no 62 (29 April 2014) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3C 05 0 10 A 3C 05 0 10 H F1 14 0 10 I 38 24 0 42 I 3C 12 0 58 H,EA A0 22 0 26 ME,EA,E 3C 12 0 58 A,EA 3D 12 1 30 H,EA 38 24 0 42 H 32 17 1 14 ENA AC 18 2 34 I,EA F2 14 0 58 I 3D 12 1 30 A,EA AC 22 3 34 I,EA A1 22 1 14 ME,EA,E 34 04 2 2 WNA,ENA,SAM CC 16 3 50 SAF FB 14 1 30 I 35 04 2 18 WNA,ENA,SAM CD 16 4 6 SAF A0 14 1 46 ME,EA,E D4 04 2 34 WNA,ENA,SAM CC 27 4 22 SAF FC 14 2 2 I 34 24 2 50 WNA,EA D4 16 4 38 SAF A1 14 2 18 ME,EA,E 38 25 3 18 I CC 03 5 26 SAF AC 18 2 34 A,EA 34 12 4 6 WNA,EA,ENA 3C 14 5 42 H,EA FD 14 2 50 I 32 02 4 22 ENA CD 03 5 58 SAF 38 25 3 18 H 33 02 4 38 ENA 3C 21 6 14 H AC 22 3 34 A,EA 34 25 5 10 WNA,EA CC 19 6 30 SAF A0 32 3 50 ME,EA,E 35 25 5 26 WNA,EA,ENA CD 19 6 46 SAF F1 31 4 6 I 3C 14 5 42 A,EA CC 11 7 34 SAF A1 32 4 22 ME,EA,E 3C 21 6 14 A CD 11 7 50 SAF A2 32 4 38 ME,EA,E 34 29 7 2 WNA,EA,ENA D4 11 8 6 SAF BC 20 6 14 SAF,ME,E 34 21 8 22 WNA,EA AC 19 8 38 I,EA A0 23 6 30 ME,EA,E 38 16 8 54 I CC 20 9 26 SAF A1 23 7 34 ME,EA,E 35 29 9 42 WNA,ENA,SAM CD 20 9 42 SAF A0 13 7 50 ME,EA,E 38 27 9 58 I AC 11 10 30 I,EA A1 13 8 6 ME,EA,E 32 18 10 30 ENA AD 11 10 46 I,EA AC 19 8 38 A,EA 3C 32 12 6 A,EA AC 01 11 18 I,EA 38 16 8 54 H 38 11 12 38 I AD 01 11 34 I,EA 38 27 9 58 H D4 11 12 54 I 3C 32 12 6 H,EA AC 11 10 30 A,EA 3C 20 13 26 A,EA 3C 20 13 26 H,EA AD 11 10 46 A,EA 80 03 13 42 WNA,A 80 03 13 42 WNA,H A0 08 11 2 ME,EA,E 34 31 14 14 WNA,ENA,SAM CC 10 13 58 SAF AC 01 11 18 A,EA 35 31 14 30 WNA,ENA,SAM A4 09 14 14 SAF,I AD 01 11 34 A,EA 34 32 14 46 WNA,EA,ENA CC 09 14 46 SAF A0 28 12 22 ME,EA,E 35 32 15 2 WNA,EA,ENA CD 09 15 2 SAF 38 11 12 38 H 34 01 15 18 WNA,EA AC 28 15 34 I,EA D4 11 12 54 H 34 20 16 22 WNA,EA,ENA AD 28 15 50 I,EA A4 09 14 14 SAF,A 38 17 16 38 I CC 05 16 6 SAF BC 04 14 30 SAF,ME,EA 3C 13 16 54 A,EA A4 05 16 22 SAF,I AC 28 15 34 A,EA 34 23 17 10 WNA,EA CC 26 16 38 SAF AD 28 15 50 A,EA 35 23 17 26 WNA,EA,ENA 3C 13 16 54 H,EA A4 05 16 22 SAF,A D4 23 17 42 WNA,EA,ENA CD 26 17 10 SAF 38 17 16 38 H D4 32 17 58 WNA,ENA,SAM CC 15 18 30 SAF BC 12 18 14 SAF,ME,EA,E 38 10 18 46 I 3C 04 19 34 H,EA 38 10 18 46 H 34 13 19 2 WNA,EA,ENA 3D 04 19 50 H,EA A4 25 19 50 SAF 3C 04 19 34 A,EA CC 24 20 6 SAF 38 02 20 6 H 3D 04 19 50 A,EA CC 12 21 10 SAF 38 05 20 54 H 38 02 20 6 I CD 12 21 26 SAF D4 05 21 10 H 34 07 20 22 WNA,EA,ENA CC 25 22 30 SAF A0 21 22 14 ME,EA,E 38 05 20 54 I CD 25 23 2 SAF A4 29 23 18 SAF,A D4 05 21 10 I A4 29 23 18 SAF,I A4 14 23 34 SAF GPS Schedule no 62 (29 April 2014) *** Middle East *** *** South Africa *** *** South America *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m BC 32 0 10 SAF,E,SAM BC 32 0 10 ME,E,SAM BC 32 0 10 SAF,ME,E A0 22 0 26 I,EA,E BD 32 0 58 ME,E,SAM 18 07 0 26 WNA,ENA 74 11 0 42 WNA,ENA,E BC 23 2 50 ME,E,SAM F8 07 0 42 SAM BD 32 0 58 SAF,E,SAM BD 23 3 18 ME,E,SAM BD 32 0 58 SAF,ME,E A1 22 1 14 I,EA,E CA 13 3 34 SAM FB 07 1 14 SAM A0 14 1 46 I,EA,E CC 16 3 50 A 18 09 1 30 WNA,ENA A1 14 2 18 I,EA,E CD 16 4 6 A FC 07 1 46 SAM BC 23 2 50 SAF,E,SAM CC 27 4 22 A 34 04 2 2 WNA,H,ENA BD 23 3 18 SAF,E,SAM D4 16 4 38 A 35 04 2 18 WNA,H,ENA A0 32 3 50 I,EA,E BC 13 4 54 ME,E,SAM D4 04 2 34 WNA,H,ENA A1 32 4 22 I,EA,E BD 13 5 10 ME,E,SAM BC 23 2 50 SAF,ME,E A2 32 4 38 I,EA,E CC 03 5 26 A BD 23 3 18 SAF,ME,E BC 13 4 54 SAF,E,SAM CD 03 5 58 A CA 13 3 34 SAF BD 13 5 10 SAF,E,SAM BC 20 6 14 ME,I,E F8 10 3 50 SAM 74 04 5 42 WNA,ENA,E CC 19 6 30 A FB 10 4 6 SAM 75 04 5 58 WNA,ENA,E CD 19 6 46 A FC 10 4 22 SAM BC 20 6 14 SAF,I,E BC 08 7 18 ME,E,SAM FD 10 4 38 SAM A0 23 6 30 I,EA,E CC 11 7 34 A BC 13 4 54 SAF,ME,E 74 10 6 46 WNA,ENA,E CD 11 7 50 A BD 13 5 10 SAF,ME,E BC 08 7 18 SAF,E,SAM D4 11 8 6 A F8 17 5 26 SAM A1 23 7 34 I,EA,E BC 09 8 22 ME,E,SAM FB 17 5 42 SAM A0 13 7 50 I,EA,E BD 09 8 38 ME,E,SAM FC 17 5 58 SAM A1 13 8 6 I,EA,E CC 20 9 26 A 18 05 6 14 WNA,ENA BC 09 8 22 SAF,E,SAM CD 20 9 42 A 19 05 6 30 WNA,ENA BD 09 8 38 SAF,E,SAM BC 05 10 46 ME,E,SAM FD 17 6 46 SAM 74 05 8 54 WNA,ENA,E BD 05 11 50 ME,E,SAM FE 17 7 2 SAM 75 05 9 10 WNA,ENA,E CC 10 13 58 A BC 08 7 18 SAF,ME,E 74 26 9 58 WNA,ENA,E A4 09 14 14 I,A F8 15 7 34 SAM 75 26 10 14 WNA,ENA,E BC 04 14 30 ME,I,EA FB 15 7 50 SAM BC 05 10 46 SAF,E,SAM CC 09 14 46 A 68 26 8 6 ENA A0 08 11 2 I,EA,E CD 09 15 2 A BC 09 8 22 SAF,ME,E 74 15 11 34 WNA,ENA,E CA 29 15 18 SAM BD 09 8 38 SAF,ME,E BD 05 11 50 SAF,E,SAM CC 05 16 6 A F8 02 8 54 SAM A0 28 12 22 I,EA,E A4 05 16 22 I,A FB 02 9 10 SAM 74 24 12 54 WNA,ENA,E,SAM CC 26 16 38 A 35 29 9 42 WNA,H,ENA BC 04 14 30 SAF,I,EA BC 29 16 54 ME,E,SAM BC 05 10 46 SAF,ME,E BC 29 16 54 SAF,E,SAM CD 26 17 10 A 68 24 11 18 ENA BC 12 18 14 SAF,I,EA,E BC 12 18 14 ME,I,EA,E BD 05 11 50 SAF,ME,E 74 31 18 30 WNA,ENA,E CC 15 18 30 A 18 21 12 38 WNA,ENA 74 16 20 38 WNA,ENA,E A4 25 19 50 I 74 24 12 54 WNA,ME,ENA,E 75 16 20 54 WNA,ENA,E CC 24 20 6 A 34 31 14 14 WNA,H,ENA 74 27 21 42 WNA,ENA,E CC 12 21 10 A 35 31 14 30 WNA,H,ENA 75 27 21 58 WNA,ENA,E CD 12 21 26 A CA 29 15 18 SAF A0 21 22 14 I,EA,E CC 25 22 30 A 18 14 16 6 WNA,ENA,E 74 03 22 30 WNA,ENA,E BC 16 22 46 ME,E,SAM BC 29 16 54 SAF,ME,E BC 16 22 46 SAF,E,SAM CD 25 23 2 A D4 32 17 58 WNA,H,ENA 74 19 23 2 WNA,ENA,E A4 29 23 18 I,A BC 16 22 46 SAF,ME,E 75 19 23 18 WNA,ENA,E A4 14 23 34 I 19 07 23 50 WNA,ENA