16 April 2012 FA/GPSW.409 Dear Colleagues, Please find enclosed tracking schedule No. 58 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 56047 (30 April 2012) 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 58 * * for implementation on MJD 56047 (30 April 2012) 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 KEBS*,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. KEBS : Kenya Bureau of Standards, Nairobi, Kenya. 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 58 (30 April 2012) *** Europe *** Class PRN Start Connects h m A0 21 0 6 ME,I,EA BC 16 0 22 SAF,ME,SAM BD 16 0 38 SAF,ME,SAM 74 19 1 10 WNA,ME,ENA BC 06 2 14 SAF,ME,I A0 22 2 30 ME,I,EA A1 22 2 46 ME,I,EA 18 01 3 2 WNA,ENA,SAM 74 01 3 18 WNA,ME,ENA A0 14 4 18 ME,I,EA BC 23 5 6 SAF,ME,SAM BC 11 5 38 SAF,ME,I BD 23 5 54 SAF,ME,SAM BC 01 6 10 SAF,ME,I BD 01 6 26 SAF,ME,I A0 32 6 42 ME,I,EA 74 04 7 46 WNA,ME,ENA 74 10 8 18 WNA,ME,ENA 75 10 8 34 WNA,ME,ENA A0 23 8 50 ME,I,EA BC 08 9 6 SAF,ME,SAM 18 02 9 22 WNA,ENA,SAM BC 04 9 38 SAF,ME,SAM BD 08 9 54 SAF,ME,SAM A0 13 10 10 ME,I,EA A1 13 10 26 ME,I,EA 74 05 10 42 WNA,ME,ENA A0 07 11 30 ME,I,EA BC 05 12 50 SAF,ME,SAM 74 15 13 38 WNA,ME,ENA 75 15 13 54 WNA,ME,ENA A0 28 14 26 ME,I,EA 74 09 14 42 WNA,ME,ENA,SAM 75 09 14 58 WNA,ME,ENA BC 15 16 34 SAF,ME,SAM BC 27 17 22 SAF,ME,I BC 29 17 54 SAF,ME,SAM BD 29 18 42 SAF,ME,SAM 74 31 19 46 WNA,ME,ENA BC 12 20 2 SAF,ME,I,EA BC 21 20 18 SAF,ME,SAM 74 30 21 22 WNA,ME,ENA 75 30 21 38 WNA,ME,ENA BC 31 21 54 SAF,ME,SAM 74 16 22 26 WNA,ME,ENA 75 16 22 42 WNA,ME,ENA 74 06 22 58 WNA,ME,ENA,SAM 74 03 23 46 WNA,ME,ENA GPS Schedule no 58 (30 April 2012) *** 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 34 13 0 6 WNA,H,SAM 34 13 0 6 H,ENA,SAM A0 21 0 6 ME,I,E 68 11 0 54 SAM 74 19 1 10 ME,ENA,E AC 27 0 22 I,A 74 19 1 10 WNA,ME,E 18 07 1 26 ENA,SAM AD 27 0 38 I,A 18 07 1 26 WNA,SAM 34 28 1 58 H,ENA 3C 05 0 54 A,H 68 01 1 42 SAM 34 17 2 46 H,ENA D4 27 1 42 I,H 34 28 1 58 WNA,H 18 01 3 2 ENA,E,SAM A0 22 2 30 ME,I,E 34 17 2 46 WNA,H 74 01 3 18 ME,ENA,E A1 22 2 46 ME,I,E 18 01 3 2 WNA,E,SAM 34 27 3 34 H,EA,ENA 3C 12 3 18 A,H 74 01 3 18 WNA,ME,E 35 27 4 2 H,EA,ENA 34 27 3 34 WNA,H,ENA 34 27 3 34 WNA,H,EA 34 04 4 18 H,ENA,SAM 35 27 4 2 WNA,H,ENA 35 27 4 2 WNA,H,EA 34 09 4 34 H,EA,ENA A0 14 4 18 ME,I,E 34 04 4 18 WNA,H,SAM 34 12 5 38 H,EA,ENA 34 09 4 34 WNA,H,ENA 34 09 4 34 WNA,H,EA 35 12 5 54 H,EA,ENA AC 22 5 22 I,A 68 28 4 50 SAM D4 12 6 42 H,ENA 34 12 5 38 WNA,H,ENA 69 28 5 22 SAM 74 04 7 46 ME,ENA,E 35 12 5 54 WNA,H,ENA 34 12 5 38 WNA,H,EA 74 10 8 18 ME,ENA,E 3C 29 6 10 A,H 35 12 5 54 WNA,H,EA 75 10 8 34 ME,ENA,E 3D 29 6 26 A,H D4 12 6 42 WNA,H 18 02 9 22 ENA,E,SAM A0 32 6 42 ME,I,E 74 04 7 46 WNA,ME,E 74 05 10 42 ME,ENA,E 3C 14 6 58 A,H 74 10 8 18 WNA,ME,E 34 29 11 30 H,ENA,SAM BC 32 8 2 SAF,ME,I 75 10 8 34 WNA,ME,E 35 29 11 46 H,ENA,SAM A0 23 8 50 ME,I,E 18 02 9 22 WNA,E,SAM 34 06 12 34 H,EA AC 03 9 22 I,A 74 05 10 42 WNA,ME,E 35 06 12 50 H,EA 3C 31 9 38 A,H 34 29 11 30 WNA,H,SAM 74 15 13 38 ME,ENA,E A0 13 10 10 ME,I,E 35 29 11 46 WNA,H,SAM 75 15 13 54 ME,ENA,E A1 13 10 26 ME,I,E 74 15 13 38 WNA,ME,E 34 19 14 10 H,EA AC 19 10 42 I,A 75 15 13 54 WNA,ME,E 18 21 14 26 ENA,SAM 38 06 10 58 I,H 18 21 14 26 WNA,SAM 74 09 14 42 ME,ENA,E,SAM A0 07 11 30 ME,I,E 74 09 14 42 WNA,ME,E,SAM 75 09 14 58 ME,ENA,E BC 13 12 2 SAF,ME,I 75 09 14 58 WNA,ME,E 34 31 16 2 H,ENA,SAM 34 06 12 34 WNA,H 34 31 16 2 WNA,H,SAM 35 31 16 18 H,ENA,SAM 35 06 12 50 WNA,H 35 31 16 18 WNA,H,SAM 34 01 16 34 H,EA AC 01 13 6 I,A 18 22 16 50 WNA,SAM 18 22 16 50 ENA,SAM AD 01 13 22 I,A 34 32 17 6 WNA,H,EA 34 32 17 6 H,EA,ENA 34 19 14 10 WNA,H 35 32 17 22 WNA,H,EA 35 32 17 22 H,EA,ENA A0 28 14 26 ME,I,E 34 20 18 26 WNA,H,EA 34 20 18 26 H,EA,ENA 3D 32 14 58 A,H 34 23 19 30 WNA,H,EA 34 23 19 30 H,EA,ENA 3C 20 15 30 A,H 74 31 19 46 WNA,ME,E 74 31 19 46 ME,ENA,E 34 01 16 34 WNA,H D4 32 20 34 WNA,H,SAM D4 32 20 34 H,ENA,SAM 34 32 17 6 WNA,H,ENA 35 13 20 50 WNA,H,EA 35 13 20 50 H,EA,ENA 35 32 17 22 WNA,H,ENA D4 13 21 6 WNA,H,EA D4 13 21 6 H,EA,ENA AC 10 17 54 I,A 74 30 21 22 WNA,ME,E 74 30 21 22 ME,ENA,E 3C 13 18 10 A,H 75 30 21 38 WNA,ME,E 75 30 21 38 ME,ENA,E 34 20 18 26 WNA,H,ENA 35 23 22 10 WNA,H,SAM 35 23 22 10 H,ENA,SAM 34 23 19 30 WNA,H,ENA 74 16 22 26 WNA,ME,E 74 16 22 26 ME,ENA,E BC 12 20 2 SAF,ME,I,E 75 16 22 42 WNA,ME,E 75 16 22 42 ME,ENA,E 35 13 20 50 WNA,H,ENA 74 06 22 58 WNA,ME,E,SAM 74 06 22 58 ME,ENA,E,SAM D4 13 21 6 WNA,H,ENA 74 03 23 46 WNA,ME,E 74 03 23 46 ME,ENA,E 3C 04 21 22 A,H GPS Schedule no 58 (30 April 2012) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 34 13 0 6 WNA,ENA,SAM AC 27 0 22 I,EA A0 21 0 6 ME,EA,E 3C 05 0 54 A,EA AD 27 0 38 I,EA AC 27 0 22 A,EA 38 27 1 26 I 3C 05 0 54 H,EA AD 27 0 38 A,EA D4 27 1 42 I,EA A4 29 1 10 SAF,I F1 15 0 54 I 34 28 1 58 WNA,ENA CC 29 1 26 SAF A4 29 1 10 SAF,A 34 17 2 46 WNA,ENA CD 29 1 58 SAF 38 27 1 26 H 3C 12 3 18 A,EA 3C 12 3 18 H,EA D4 27 1 42 H,EA 34 27 3 34 WNA,EA,ENA CC 30 4 18 SAF F1 14 1 58 I 35 27 4 2 WNA,EA,ENA CD 30 4 50 SAF BC 06 2 14 SAF,ME,E 34 04 4 18 WNA,ENA,SAM 3C 15 5 6 H A0 22 2 30 ME,EA,E 34 09 4 34 WNA,EA,ENA AC 22 5 22 I,EA A1 22 2 46 ME,EA,E 3C 15 5 6 A 3C 29 6 10 H,EA F2 14 3 2 I 34 12 5 38 WNA,EA,ENA 3D 29 6 26 H,EA FB 14 3 18 I 35 12 5 54 WNA,EA,ENA CC 03 6 42 SAF FC 14 3 34 I 3C 29 6 10 A,EA 3C 14 6 58 H,EA FD 14 4 2 I 3D 29 6 26 A,EA 3C 21 7 46 H A0 14 4 18 ME,EA,E D4 12 6 42 WNA,ENA 3D 21 8 2 H FE 14 4 34 I 3C 14 6 58 A,EA CC 19 8 34 SAF FE 14 4 50 I 3C 21 7 46 A CD 19 8 50 SAF FE 14 5 6 I 3D 21 8 2 A AC 03 9 22 I,EA AC 22 5 22 A,EA 3C 31 9 38 A,EA 3C 31 9 38 H,EA BC 11 5 38 SAF,ME,E 38 06 10 58 I,EA CC 01 10 10 SAF F1 31 5 54 I 34 29 11 30 WNA,ENA,SAM CD 01 10 26 SAF BC 01 6 10 SAF,ME,E 35 29 11 46 WNA,ENA,SAM AC 19 10 42 I,EA BD 01 6 26 SAF,ME,E 34 06 12 34 WNA,EA CC 20 11 14 SAF A0 32 6 42 ME,EA,E 35 06 12 50 WNA,EA CD 20 11 46 SAF F1 20 6 58 I 3C 16 13 54 A A4 23 12 18 SAF,I BC 32 8 2 SAF,ME,EA 34 19 14 10 WNA,EA CC 23 12 34 SAF A0 23 8 50 ME,EA,E 3C 32 14 26 A AC 01 13 6 I,EA AC 03 9 22 A,EA 3D 32 14 58 A,EA AD 01 13 22 I,EA A0 13 10 10 ME,EA,E 38 01 15 14 I CC 13 13 38 SAF A1 13 10 26 ME,EA,E 3C 20 15 30 A,EA 3C 16 13 54 H AC 19 10 42 A,EA 34 31 16 2 WNA,ENA,SAM CD 13 14 10 SAF 38 06 10 58 H,EA 35 31 16 18 WNA,ENA,SAM 3C 32 14 26 H A0 07 11 30 ME,EA,E 34 01 16 34 WNA,EA 3D 32 14 58 H,EA BC 13 12 2 SAF,ME,EA 34 32 17 6 WNA,EA,ENA CC 10 15 14 SAF A4 23 12 18 SAF,A 35 32 17 22 WNA,EA,ENA 3C 20 15 30 H,EA AC 01 13 6 A,EA 3C 13 18 10 A,EA CD 10 15 46 SAF AD 01 13 22 A,EA 34 20 18 26 WNA,EA,ENA AC 10 17 54 I,EA A0 28 14 26 ME,EA,E 34 23 19 30 WNA,EA,ENA 3C 13 18 10 H,EA 38 01 15 14 H 38 04 19 46 I A4 05 18 26 SAF,I A4 02 16 50 SAF D4 32 20 34 WNA,ENA,SAM CC 15 20 34 SAF BC 27 17 22 SAF,ME,E 35 13 20 50 WNA,EA,ENA CC 27 20 50 SAF AC 10 17 54 A,EA D4 13 21 6 WNA,EA,ENA CD 15 21 6 SAF A4 05 18 26 SAF,A 3C 04 21 22 A,EA 3C 04 21 22 H,EA 38 04 19 46 H 35 23 22 10 WNA,ENA,SAM A4 15 21 38 SAF,I BC 12 20 2 SAF,ME,EA,E 3D 04 22 26 A 3D 04 22 26 H A4 15 21 38 SAF,A 38 05 22 42 I CC 12 22 42 SAF 38 05 22 42 H GPS Schedule no 58 (30 April 2012) *** Middle East *** *** South Africa *** *** South America *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m A0 21 0 6 I,EA,E BC 16 0 22 ME,E,SAM 34 13 0 6 WNA,H,ENA BC 16 0 22 SAF,E,SAM BD 16 0 38 ME,E,SAM BC 16 0 22 SAF,ME,E BD 16 0 38 SAF,E,SAM A4 29 1 10 I,A BD 16 0 38 SAF,ME,E 74 19 1 10 WNA,ENA,E CC 29 1 26 A 68 11 0 54 ENA BC 06 2 14 SAF,I,E CD 29 1 58 A F8 01 1 10 SAM A0 22 2 30 I,EA,E BC 06 2 14 ME,I,E 18 07 1 26 WNA,ENA A1 22 2 46 I,EA,E CA 23 3 34 SAM 68 01 1 42 ENA 74 01 3 18 WNA,ENA,E CC 30 4 18 A FB 01 1 58 SAM A0 14 4 18 I,EA,E CD 30 4 50 A F8 07 2 14 SAM BC 23 5 6 SAF,E,SAM BC 23 5 6 ME,E,SAM FB 07 2 30 SAM BC 11 5 38 SAF,I,E BC 11 5 38 ME,I,E FC 07 2 46 SAM BD 23 5 54 SAF,E,SAM BD 23 5 54 ME,E,SAM 18 01 3 2 WNA,ENA,E BC 01 6 10 SAF,I,E BC 01 6 10 ME,I,E FD 07 3 18 SAM BD 01 6 26 SAF,I,E BD 01 6 26 ME,I,E CA 23 3 34 SAF A0 32 6 42 I,EA,E CC 03 6 42 A FE 07 4 2 SAM 74 04 7 46 WNA,ENA,E BC 32 8 2 ME,I,EA 34 04 4 18 WNA,H,ENA BC 32 8 2 SAF,I,EA CC 19 8 34 A F8 08 4 34 SAM 74 10 8 18 WNA,ENA,E CD 19 8 50 A 68 28 4 50 ENA 75 10 8 34 WNA,ENA,E BC 08 9 6 ME,E,SAM BC 23 5 6 SAF,ME,E A0 23 8 50 I,EA,E BC 04 9 38 ME,E,SAM 69 28 5 22 ENA BC 08 9 6 SAF,E,SAM BD 08 9 54 ME,E,SAM F8 10 5 38 SAM BC 04 9 38 SAF,E,SAM CC 01 10 10 A BD 23 5 54 SAF,ME,E BD 08 9 54 SAF,E,SAM CD 01 10 26 A FB 10 6 10 SAM A0 13 10 10 I,EA,E CC 20 11 14 A FC 10 6 26 SAM A1 13 10 26 I,EA,E CD 20 11 46 A FD 10 6 42 SAM 74 05 10 42 WNA,ENA,E BC 13 12 2 ME,I,EA F8 17 6 58 SAM A0 07 11 30 I,EA,E A4 23 12 18 I,A FB 17 7 14 SAM BC 13 12 2 SAF,I,EA CC 23 12 34 A BC 08 9 6 SAF,ME,E BC 05 12 50 SAF,E,SAM BC 05 12 50 ME,E,SAM 18 02 9 22 WNA,ENA,E 74 15 13 38 WNA,ENA,E CC 13 13 38 A BC 04 9 38 SAF,ME,E 75 15 13 54 WNA,ENA,E CD 13 14 10 A BD 08 9 54 SAF,ME,E A0 28 14 26 I,EA,E CC 10 15 14 A 34 29 11 30 WNA,H,ENA 74 09 14 42 WNA,ENA,E,SAM CD 10 15 46 A 35 29 11 46 WNA,H,ENA 75 09 14 58 WNA,ENA,E BC 15 16 34 ME,E,SAM BC 05 12 50 SAF,ME,E BC 15 16 34 SAF,E,SAM A4 02 16 50 I 18 21 14 26 WNA,ENA BC 27 17 22 SAF,I,E CA 29 17 6 SAM 74 09 14 42 WNA,ME,ENA,E BC 29 17 54 SAF,E,SAM BC 27 17 22 ME,I,E 34 31 16 2 WNA,H,ENA BD 29 18 42 SAF,E,SAM BC 29 17 54 ME,E,SAM 35 31 16 18 WNA,H,ENA 74 31 19 46 WNA,ENA,E A4 05 18 26 I,A BC 15 16 34 SAF,ME,E BC 12 20 2 SAF,I,EA,E BD 29 18 42 ME,E,SAM 18 22 16 50 WNA,ENA BC 21 20 18 SAF,E,SAM BC 12 20 2 ME,I,EA,E CA 29 17 6 SAF 74 30 21 22 WNA,ENA,E BC 21 20 18 ME,E,SAM BC 29 17 54 SAF,ME,E 75 30 21 38 WNA,ENA,E CC 15 20 34 A BD 29 18 42 SAF,ME,E BC 31 21 54 SAF,E,SAM CC 27 20 50 A BC 21 20 18 SAF,ME,E 74 16 22 26 WNA,ENA,E CD 15 21 6 A D4 32 20 34 WNA,H,ENA 75 16 22 42 WNA,ENA,E A4 15 21 38 I,A BC 31 21 54 SAF,ME,E 74 06 22 58 WNA,ENA,E,SAM BC 31 21 54 ME,E,SAM 35 23 22 10 WNA,H,ENA 74 03 23 46 WNA,ENA,E CC 12 22 42 A 74 06 22 58 WNA,ME,ENA,E