22 April 2009 FA/GPSW.403 Dear Colleagues, Please find enclosed tracking schedule No. 52 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 54951 (30 April 2009) 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-typeEreceiver, 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 Head, Time frequency and gravimetry section 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 52 * * for implementation on MJD 54951 (30 April 2009) 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, 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, ZMDM 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 IGMA, 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 1, 2006); other laboratories are indicated by an asterisk. * AMC : USNO Alternate Master Clock, Colorado. AO : Arecibo Observatory. IPQ : Instituto Português da Qualidade, Monte de Caparica, Portugal. INTI : Instituto Nacional de Tecnologú} Industrial, San Martú‹, Prov. Buenos Aires, Argentina. Kou : CNES Kourou Center. KZ : Kazakh Institute of Metrology RSE, Astana, Kazakhstan. 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. SMD : Direction générale QualitEet SécuritE ministère des Affaires économiques, Bruxelles, Belgium. 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 52 (30 April 2009) *** Europe *** Class PRN Start Connects h m BC 30 0 18 SAF,ME,I A0 29 0 34 ME,I,EA A0 24 0 50 ME,I,EA A1 24 1 6 ME,I,EA A2 24 1 22 ME,I,EA A3 24 1 38 ME,I,EA 18 06 1 54 WNA,ENA,SAM 18 03 2 10 WNA,ENA,SAM A0 21 2 26 ME,I,EA D4 18 2 42 SAF,ME,I A1 21 3 14 ME,I,EA A0 18 3 46 ME,I,EA 74 19 4 2 WNA,ME,ENA BC 16 4 18 SAF,ME,SAM A0 22 5 18 ME,I,EA A1 22 5 34 ME,I,EA 18 11 5 50 WNA,ENA,SAM 74 11 6 6 WNA,ME,ENA A0 14 6 22 ME,I,EA A1 14 6 54 ME,I,EA BC 23 7 58 SAF,ME,SAM BC 13 9 2 SAF,ME,SAM BD 13 9 34 SAF,ME,SAM D4 13 9 50 SAF,ME,SAM 74 04 10 22 WNA,ME,ENA 75 04 10 38 WNA,ME,ENA BC 20 11 10 SAF,ME,I 18 02 11 58 WNA,ENA,SAM 19 02 12 14 WNA,ENA,SAM BC 04 12 30 SAF,ME,SAM BC 08 12 46 SAF,ME,SAM BD 08 13 2 SAF,ME,SAM 74 10 13 34 WNA,ME,ENA 75 10 13 50 WNA,ME,ENA A0 07 14 22 ME,I,EA 18 15 14 38 WNA,ENA,SAM 19 15 14 54 WNA,ENA,SAM 74 15 15 42 WNA,ME,ENA A0 08 15 58 ME,I,EA 74 26 16 30 WNA,ME,ENA 75 26 16 46 WNA,ME,ENA A0 28 17 18 ME,I,EA 74 09 17 50 WNA,ME,ENA 18 18 18 6 WNA,ENA,SAM 18 14 20 30 WNA,ENA,SAM BD 29 21 34 SAF,ME,SAM 74 31 22 38 WNA,ME,ENA 75 31 22 54 WNA,ME,ENA GPS Schedule no 52 (30 April 2009) *** 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 2 WNA,H,EA 34 13 0 2 H,EA,ENA 34 13 0 2 WNA,H,ENA 35 13 0 18 WNA,H 35 13 0 18 H,ENA A0 29 0 34 ME,I,E 68 03 0 34 SAM D4 13 0 50 H,ENA A0 24 0 50 ME,I,E D4 13 0 50 WNA,H D5 13 1 6 H,ENA A1 24 1 6 ME,I,E D5 13 1 6 WNA,H D6 13 1 22 H,ENA A2 24 1 22 ME,I,E D6 13 1 22 WNA,H 34 07 1 38 H,ENA A3 24 1 38 ME,I,E 34 07 1 38 WNA,H 18 06 1 54 ENA,E,SAM A0 21 2 26 ME,I,E 18 06 1 54 WNA,E,SAM 18 03 2 10 ENA,E,SAM 34 08 2 42 WNA,H,ENA 18 03 2 10 WNA,E,SAM 34 08 2 42 H,EA,ENA 35 08 2 58 WNA,H,ENA 34 08 2 42 WNA,H,EA 35 08 2 58 H,EA,ENA A1 21 3 14 ME,I,E 35 08 2 58 WNA,H,EA 74 19 4 2 ME,ENA,E AC 27 3 30 I,A,H 68 25 3 46 SAM 34 15 4 50 H,EA A0 18 3 46 ME,I,E 74 19 4 2 WNA,ME,E 18 11 5 50 ENA,E,SAM AC 24 4 2 I,A 18 11 5 50 WNA,E,SAM 74 11 6 6 ME,ENA,E AC 09 4 18 I,A 74 11 6 6 WNA,ME,E 34 04 7 10 H,ENA,SAM 34 15 4 50 WNA,H 60 32 6 38 ME,SAM 35 04 7 26 H,ENA,SAM A0 22 5 18 ME,I,E 34 04 7 10 WNA,H,SAM 34 09 7 42 H,EA,ENA A1 22 5 34 ME,I,E 35 04 7 26 WNA,H,SAM 34 12 9 2 H,EA,ENA 3C 12 5 50 A,H 34 09 7 42 WNA,H,EA 74 04 10 22 ME,ENA,E A0 14 6 22 ME,I,E 34 12 9 2 WNA,H,EA 75 04 10 38 ME,ENA,E 3D 12 6 38 A,H 74 04 10 22 WNA,ME,E 34 29 11 42 H,EA,ENA A1 14 6 54 ME,I,E 75 04 10 38 WNA,ME,E 18 02 11 58 ENA,E,SAM BC 31 7 26 SAF,ME,I 34 29 11 42 WNA,H,EA 19 02 12 14 ENA,E,SAM 34 09 7 42 WNA,H,ENA 18 02 11 58 WNA,E,SAM 74 10 13 34 ME,ENA,E AC 22 8 14 I,A 19 02 12 14 WNA,E,SAM 75 10 13 50 ME,ENA,E 3C 29 8 46 A,H 74 10 13 34 WNA,ME,E 18 15 14 38 ENA,E,SAM 34 12 9 2 WNA,H,ENA 75 10 13 50 WNA,ME,E 19 15 14 54 ENA,E,SAM 3D 29 9 34 A,H 18 15 14 38 WNA,E,SAM 80 16 15 26 A,H,EA 3C 14 9 50 A,H 19 15 14 54 WNA,E,SAM 74 15 15 42 ME,ENA,E 34 29 11 42 WNA,H,ENA 74 15 15 42 WNA,ME,E 74 26 16 30 ME,ENA,E AC 06 11 58 I,A 74 26 16 30 WNA,ME,E 75 26 16 46 ME,ENA,E AD 06 12 14 I,A 75 26 16 46 WNA,ME,E 18 21 17 2 ENA,SAM 3C 31 12 30 A,H 18 21 17 2 WNA,SAM 74 09 17 50 ME,ENA,E AC 03 12 46 I,A 74 09 17 50 WNA,ME,E 18 18 18 6 ENA,E,SAM 3D 31 13 2 A,H 18 18 18 6 WNA,E,SAM 34 31 18 54 H,ENA,SAM D4 31 13 18 A,H 34 31 18 54 WNA,H,SAM 35 31 19 10 H,ENA,SAM AC 19 13 34 I,A 35 31 19 10 WNA,H,SAM D4 31 19 26 H,ENA,SAM A0 07 14 22 ME,I,E D4 31 19 26 WNA,H,SAM 34 32 19 42 H,EA D5 13 14 54 SAF,ME,I 35 32 19 58 WNA,H,EA 35 32 19 58 H,EA,ENA 80 16 15 26 WNA,A,H D4 32 20 14 WNA,H,EA D4 32 20 14 H,EA,ENA A0 08 15 58 ME,I,E 18 14 20 30 WNA,E,SAM 18 14 20 30 ENA,E,SAM A0 28 17 18 ME,I,E D5 32 21 2 WNA,H D5 32 21 2 H,ENA BD 04 19 10 SAF,ME,I 34 20 21 18 WNA,H,EA 34 20 21 18 H,EA,ENA 34 32 19 42 WNA,H 34 23 22 22 WNA,H,EA 34 23 22 22 H,EA,ENA 35 32 19 58 WNA,H,ENA 74 31 22 38 WNA,ME,E 74 31 22 38 ME,ENA,E D4 32 20 14 WNA,H,ENA 75 31 22 54 WNA,ME,E 75 31 22 54 ME,ENA,E 34 20 21 18 WNA,H,ENA D6 32 23 26 WNA,H,SAM D6 32 23 26 H,ENA,SAM 34 23 22 22 WNA,H,ENA D7 13 23 42 WNA,H,EA D7 13 23 42 H,EA,ENA D7 13 23 42 WNA,H,ENA GPS Schedule no 52 (30 April 2009) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 34 13 0 2 WNA,EA,ENA CC 09 0 34 SAF A4 12 0 2 SAF 35 13 0 18 WNA,ENA CD 09 1 6 SAF BC 30 0 18 SAF,ME,E D4 13 0 50 WNA,ENA 3C 02 1 54 H A0 29 0 34 ME,EA,E D5 13 1 6 WNA,ENA CC 12 2 26 SAF A0 24 0 50 ME,EA,E D6 13 1 22 WNA,ENA CC 30 3 14 SAF A1 24 1 6 ME,EA,E 34 07 1 38 WNA,ENA AC 27 3 30 I,H,EA A2 24 1 22 ME,EA,E 3C 02 1 54 A CD 30 3 46 SAF A3 24 1 38 ME,EA,E 34 08 2 42 WNA,EA,ENA AC 24 4 2 I,EA BC 18 1 54 SAF,ME 35 08 2 58 WNA,EA,ENA AC 09 4 18 I,EA BD 18 2 10 SAF,ME AC 27 3 30 I,A,EA CC 29 4 34 SAF A0 21 2 26 ME,EA,E 38 26 4 34 I CD 29 4 50 SAF D4 18 2 42 SAF,ME,E 34 15 4 50 WNA,EA 3C 10 5 34 H F1 15 2 58 I 3C 10 5 34 A 3C 12 5 50 H,EA A1 21 3 14 ME,EA,E 3C 12 5 50 A,EA 3D 12 6 38 H,EA AC 27 3 30 A,H,EA 3D 12 6 38 A,EA 3C 26 7 58 H A0 18 3 46 ME,EA,E 34 04 7 10 WNA,ENA,SAM AC 22 8 14 I,EA AC 24 4 2 A,EA 35 04 7 26 WNA,ENA,SAM CC 16 8 30 SAF AC 09 4 18 A,EA 34 09 7 42 WNA,EA,ENA 3C 29 8 46 H,EA 38 26 4 34 H 3C 26 7 58 A A4 16 9 18 SAF,I F1 14 4 50 I 3C 29 8 46 A,EA 3D 29 9 34 H,EA A0 22 5 18 ME,EA,E 34 12 9 2 WNA,EA,ENA 3C 14 9 50 H,EA A1 22 5 34 ME,EA,E 3D 29 9 34 A,EA CC 03 10 6 SAF F2 14 5 50 I 3C 14 9 50 A,EA 3C 21 10 22 H FB 14 6 6 I 3C 21 10 22 A CC 19 10 38 SAF A0 14 6 22 ME,EA,E 38 31 10 38 I CD 19 11 26 SAF FC 14 6 38 I D4 31 10 54 I AC 06 11 58 I,EA A1 14 6 54 ME,EA,E 34 29 11 42 WNA,EA,ENA AD 06 12 14 I,EA BC 31 7 26 SAF,ME,EA 3C 31 12 30 A,EA 3C 31 12 30 H,EA AC 22 8 14 A,EA 3D 31 13 2 A,EA AC 03 12 46 I,EA A4 16 9 18 SAF,A D4 31 13 18 A,EA 3D 31 13 2 H,EA 38 31 10 38 H 3C 22 13 50 A D4 31 13 18 H,EA D4 31 10 54 H 38 06 14 6 I AC 19 13 34 I,EA BC 20 11 10 SAF,ME,E 80 16 15 26 WNA,A,EA 3C 22 13 50 H BD 20 11 42 SAF,ME 3C 16 15 42 A CC 20 14 6 SAF AC 06 11 58 A,EA 3C 32 17 18 A CD 20 14 38 SAF AD 06 12 14 A,EA 38 11 18 6 I 80 16 15 26 WNA,H,EA AC 03 12 46 A,EA 34 31 18 54 WNA,ENA,SAM 3C 16 15 42 H AC 19 13 34 A,EA 35 31 19 10 WNA,ENA,SAM A4 13 16 14 SAF,I 38 06 14 6 H D4 31 19 26 WNA,ENA,SAM CC 13 16 46 SAF A0 07 14 22 ME,EA,E 34 32 19 42 WNA,EA CD 13 17 2 SAF D5 13 14 54 SAF,ME,EA 35 32 19 58 WNA,EA,ENA 3C 32 17 18 H A0 08 15 58 ME,EA,E D4 32 20 14 WNA,EA,ENA 3C 13 20 46 H A4 13 16 14 SAF,A 3C 13 20 46 A CC 10 21 2 SAF A4 17 16 30 SAF D5 32 21 2 WNA,ENA A4 10 21 18 SAF,I A0 28 17 18 ME,EA,E 34 20 21 18 WNA,EA,ENA CC 15 22 22 SAF 38 11 18 6 H 34 23 22 22 WNA,EA,ENA CD 15 23 10 SAF BD 04 19 10 SAF,ME,EA D6 32 23 26 WNA,ENA,SAM CC 26 23 26 SAF BC 27 20 30 SAF,ME D7 13 23 42 WNA,EA,ENA CC 27 23 42 SAF A4 10 21 18 SAF,A GPS Schedule no 52 (30 April 2009) *** 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 30 0 18 SAF,I,E A4 12 0 2 I F8 03 0 2 SAM A0 29 0 34 I,EA,E BC 30 0 18 ME,I,E FB 03 0 18 SAM A0 24 0 50 I,EA,E CC 09 0 34 A 68 03 0 34 ENA A1 24 1 6 I,EA,E CD 09 1 6 A FC 03 0 50 SAM A2 24 1 22 I,EA,E CA 31 1 22 SAM FD 03 1 6 SAM A3 24 1 38 I,EA,E CB 31 1 38 SAM CA 31 1 22 SAF BC 18 1 54 SAF,I BC 18 1 54 ME,I CB 31 1 38 SAF BD 18 2 10 SAF,I BD 18 2 10 ME,I 18 06 1 54 WNA,ENA,E A0 21 2 26 I,EA,E CC 12 2 26 A 18 03 2 10 WNA,ENA,E D4 18 2 42 SAF,I,E D4 18 2 42 ME,I,E F8 11 2 26 SAM A1 21 3 14 I,EA,E CC 30 3 14 A FB 11 2 42 SAM A0 18 3 46 I,EA,E CD 30 3 46 A FC 11 2 58 SAM 74 19 4 2 WNA,ENA,E CA 32 4 2 SAM FD 11 3 14 SAM BC 16 4 18 SAF,E,SAM BC 16 4 18 ME,E,SAM FE 11 3 30 SAM A0 22 5 18 I,EA,E CC 29 4 34 A 68 25 3 46 ENA A1 22 5 34 I,EA,E CD 29 4 50 A CA 32 4 2 SAF 74 11 6 6 WNA,ENA,E BC 31 7 26 ME,I,EA BC 16 4 18 SAF,ME,E A0 14 6 22 I,EA,E BC 23 7 58 ME,E,SAM F8 07 4 34 SAM 60 32 6 38 ENA,SAM CC 16 8 30 A FB 07 4 50 SAM A1 14 6 54 I,EA,E BC 13 9 2 ME,E,SAM FC 07 5 18 SAM BC 31 7 26 SAF,I,EA A4 16 9 18 I,A FD 07 5 34 SAM BC 23 7 58 SAF,E,SAM BD 13 9 34 ME,E,SAM 18 11 5 50 WNA,ENA,E BC 13 9 2 SAF,E,SAM D4 13 9 50 ME,E,SAM FE 07 6 6 SAM BD 13 9 34 SAF,E,SAM CC 03 10 6 A FE 07 6 22 SAM D4 13 9 50 SAF,E,SAM CC 19 10 38 A 60 32 6 38 ME,ENA 74 04 10 22 WNA,ENA,E BC 20 11 10 ME,I,E FE 07 6 54 SAM 75 04 10 38 WNA,ENA,E CD 19 11 26 A 34 04 7 10 WNA,H,ENA BC 20 11 10 SAF,I,E BD 20 11 42 ME,I 35 04 7 26 WNA,H,ENA BD 20 11 42 SAF,I BC 04 12 30 ME,E,SAM BC 23 7 58 SAF,ME,E BC 04 12 30 SAF,E,SAM BC 08 12 46 ME,E,SAM BC 13 9 2 SAF,ME,E BC 08 12 46 SAF,E,SAM BD 08 13 2 ME,E,SAM BD 13 9 34 SAF,ME,E BD 08 13 2 SAF,E,SAM CC 20 14 6 A D4 13 9 50 SAF,ME,E 74 10 13 34 WNA,ENA,E CD 20 14 38 A 18 02 11 58 WNA,ENA,E 75 10 13 50 WNA,ENA,E D5 13 14 54 ME,I,EA 19 02 12 14 WNA,ENA,E A0 07 14 22 I,EA,E A4 13 16 14 I,A BC 04 12 30 SAF,ME,E D5 13 14 54 SAF,I,EA A4 17 16 30 I BC 08 12 46 SAF,ME,E 74 15 15 42 WNA,ENA,E CC 13 16 46 A BD 08 13 2 SAF,ME,E A0 08 15 58 I,EA,E CD 13 17 2 A 18 15 14 38 WNA,ENA,E 74 26 16 30 WNA,ENA,E BD 04 19 10 ME,I,EA 19 15 14 54 WNA,ENA,E 75 26 16 46 WNA,ENA,E BC 27 20 30 ME,I 18 21 17 2 WNA,ENA A0 28 17 18 I,EA,E BC 29 20 46 ME,SAM 18 18 18 6 WNA,ENA,E 74 09 17 50 WNA,ENA,E CC 10 21 2 A 34 31 18 54 WNA,H,ENA BD 04 19 10 SAF,I,EA A4 10 21 18 I,A 35 31 19 10 WNA,H,ENA BC 27 20 30 SAF,I BD 29 21 34 ME,E,SAM D4 31 19 26 WNA,H,ENA BC 29 20 46 SAF,SAM CC 15 22 22 A 18 14 20 30 WNA,ENA,E BD 29 21 34 SAF,E,SAM CD 15 23 10 A BC 29 20 46 SAF,ME 74 31 22 38 WNA,ENA,E CC 26 23 26 A BD 29 21 34 SAF,ME,E 75 31 22 54 WNA,ENA,E CC 27 23 42 A D6 32 23 26 WNA,H,ENA