22 October 2007 FA/GPSW.399 Dear Colleagues, Please find enclosed tracking schedule No. 49 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 54406 (02 November 2007) 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 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 49 * * for implementation on MJD 54406 (02 November 2007) 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, LDS, LT, LV*, Mad*, MIKE, MKEH, NIMB, NPL, OB*, OCA*, OP, ORB, PL, PTB, RAAI*, RIRT*, ROA, SIQ*, SMU, SP, SU, TP, UME, VSL, ZMDM East North America ENA AO*, APL, NRC, USNO West North America WNA AMC*, CNM, CNMP, Gold*, NIST, WWV* Hawaii H WWVH* East Asia EA BIRM, HKO, JATC, KRIS, NAO, NICT, NIM, NIMT, NMIJ, NMLS, NTSC, SCL, SG, TL Australia and New Zealand A AUS, Can*, MSL India I NPLI Middle East ME INPL, NIS South Africa SAF ZA South America SAM IGMA, 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. EIM : Hellenic Institute of Metrology, Thessaloniki, Greece. IPQ : Institute Portigues da Qualidade, Monte de Caparica, Portugal. Kou : CNES Kourou Center. LV : SA Latvian National Metrology Centre, Riga, Latvia. 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. SIQ : Slovenian Institute of Quality and Metrology, Ljubljana, Slovenia. 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 49 ( 2 November 2007) *** Europe *** Class PRN Start Connects h m BC 27 0 26 SAF,ME,SAM A0 23 0 42 ME,I,EA BD 08 1 30 SAF,ME,SAM D4 08 1 46 SAF,ME,SAM D5 08 2 2 SAF,ME,SAM A0 13 2 18 ME,I,EA 74 10 2 50 WNA,ME,ENA A0 25 3 6 ME,I,EA A1 25 3 22 ME,I,EA A0 27 3 38 ME,I,EA A1 27 3 54 ME,I,EA A2 27 4 10 ME,I,EA 74 29 4 26 WNA,ME,ENA A0 08 4 42 ME,I,EA 74 26 4 58 WNA,ME,ENA A1 08 5 14 ME,I,EA A2 08 5 30 ME,I,EA A0 28 6 34 ME,I,EA 18 18 6 50 WNA,ENA,SAM 74 09 7 6 WNA,ME,ENA 19 18 7 22 WNA,ENA,SAM 1A 18 7 38 WNA,ENA,SAM BC 09 10 2 SAF,ME,I BC 06 10 34 SAF,ME,SAM BC 07 10 50 SAF,ME,SAM 74 31 12 10 WNA,ME,ENA BC 05 12 26 SAF,ME,I BC 30 12 58 SAF,ME,I BD 30 13 30 SAF,ME,I D4 30 13 46 SAF,ME,I 74 16 14 2 WNA,ME,ENA 75 16 14 18 WNA,ME,ENA A0 24 14 34 ME,I,EA BD 07 15 54 SAF,ME,I,EA BC 16 16 42 SAF,ME,SAM BD 16 16 58 SAF,ME,SAM 74 19 17 14 WNA,ME,ENA A0 22 18 46 ME,I,EA 74 11 19 18 WNA,ME,ENA,SAM 75 11 19 34 WNA,ME,ENA BC 23 21 10 SAF,ME,SAM A0 01 21 26 ME,I,EA 18 17 21 42 WNA,ENA,SAM BC 13 22 14 SAF,ME,SAM BD 13 22 46 SAF,ME,SAM D5 13 23 2 SAF,ME,SAM 74 04 23 34 WNA,ME,ENA 75 04 23 50 WNA,ME,ENA GPS Schedule no 49 ( 2 November 2007) *** 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 10 0 10 WNA,SAM 18 10 0 10 ENA,SAM A0 23 0 42 ME,I,E 34 06 0 58 WNA,H,EA 34 06 0 58 H,EA,ENA 34 06 0 58 WNA,H,ENA 35 06 1 14 WNA,H,EA 35 06 1 14 H,EA,ENA 35 06 1 14 WNA,H,ENA 34 07 1 30 WNA,H,EA 34 07 1 30 H,EA,ENA 34 07 1 30 WNA,H,ENA D4 06 2 2 WNA,H D4 06 2 2 H,ENA AE 03 1 46 I,A D5 06 2 18 WNA,H D5 06 2 18 H,ENA A0 13 2 18 ME,I,E 68 26 2 34 SAM 74 10 2 50 ME,ENA,E 3C 31 2 34 A,H 74 10 2 50 WNA,ME,E 35 07 3 6 H,ENA AD 19 2 50 I,A 35 07 3 6 WNA,H D6 06 4 10 H,ENA,SAM A0 25 3 6 ME,I,E D6 06 4 10 WNA,H,SAM 74 29 4 26 ME,ENA,E A1 25 3 22 ME,I,E 74 29 4 26 WNA,ME,E 34 18 4 42 H,ENA A0 27 3 38 ME,I,E 34 18 4 42 WNA,H 74 26 4 58 ME,ENA,E A1 27 3 54 ME,I,E 74 26 4 58 WNA,ME,E 18 21 6 2 ENA,SAM A2 27 4 10 ME,I,E 68 24 5 14 SAM 34 22 6 18 H,ENA A0 08 4 42 ME,I,E 18 21 6 2 WNA,SAM 18 18 6 50 ENA,E,SAM A1 08 5 14 ME,I,E 34 22 6 18 WNA,H 74 09 7 6 ME,ENA,E A2 08 5 30 ME,I,E 18 18 6 50 WNA,E,SAM 19 18 7 22 ENA,E,SAM A0 28 6 34 ME,I,E 74 09 7 6 WNA,ME,E 1A 18 7 38 ENA,E,SAM 3C 20 7 38 A,H 19 18 7 22 WNA,E,SAM 80 03 7 54 A,H BC 04 8 26 SAF,ME,I 1A 18 7 38 WNA,E,SAM 34 31 8 10 H,ENA,SAM AC 28 9 14 I,A 34 31 8 10 WNA,H,SAM 35 31 8 26 H,ENA,SAM 3C 23 9 46 A,H 35 31 8 26 WNA,H,SAM D4 31 8 42 H,ENA,SAM 34 20 10 18 WNA,H D4 31 8 42 WNA,H,SAM 34 20 10 18 H,EA 35 20 10 34 WNA,H,ENA 35 20 10 34 WNA,H,EA 35 20 10 34 H,EA,ENA D4 20 10 50 WNA,H,ENA D4 20 10 50 WNA,H,EA D4 20 10 50 H,EA,ENA 3C 17 11 6 A,H 34 23 11 38 WNA,H,EA 34 23 11 38 H,EA,ENA 34 23 11 38 WNA,H,ENA 35 23 11 54 WNA,H,EA 35 23 11 54 H,EA,ENA 35 23 11 54 WNA,H,ENA 74 31 12 10 WNA,ME,E 74 31 12 10 ME,ENA,E 34 13 12 58 WNA,H,ENA 34 13 12 58 WNA,H,EA 34 13 12 58 H,EA,ENA 35 13 13 14 WNA,H,ENA 35 13 13 14 WNA,H,EA 35 13 13 14 H,EA,ENA 3C 04 13 46 A,H 74 16 14 2 WNA,ME,E 74 16 14 2 ME,ENA,E AC 29 14 2 I,A 75 16 14 18 WNA,ME,E 75 16 14 18 ME,ENA,E 3D 04 14 18 A,H 34 27 14 50 WNA,H,EA 34 27 14 50 H,EA,ENA A0 24 14 34 ME,I,E D4 13 15 54 WNA,H,SAM D4 13 15 54 H,ENA,SAM 34 27 14 50 WNA,H,ENA 34 08 16 10 WNA,H,EA 34 08 16 10 H,EA,ENA 3C 02 15 22 A,H 74 19 17 14 WNA,ME,E 74 19 17 14 ME,ENA,E BD 07 15 54 SAF,ME,I,E 18 27 18 30 WNA,SAM 18 27 18 30 ENA,SAM 34 08 16 10 WNA,H,ENA 74 11 19 18 WNA,ME,E,SAM 74 11 19 18 ME,ENA,E,SAM AC 09 16 58 I,A 75 11 19 34 WNA,ME,E 75 11 19 34 ME,ENA,E AC 24 17 14 I,A 34 04 20 22 WNA,H,SAM 34 04 20 22 H,ENA,SAM AD 24 17 42 I,A 35 04 20 38 WNA,H,SAM 35 04 20 38 H,ENA,SAM A0 22 18 46 ME,I,E D4 04 20 54 WNA,H,SAM D4 04 20 54 H,ENA,SAM 3C 12 19 2 A,H 18 17 21 42 WNA,E,SAM 18 17 21 42 ENA,E,SAM BC 31 20 38 SAF,ME,I 34 12 22 14 WNA,H,EA 34 12 22 14 H,EA,ENA A0 01 21 26 ME,I,E 34 05 22 46 WNA,H,EA 34 05 22 46 H,EA,ENA 34 12 22 14 WNA,H,ENA 35 05 23 2 WNA,H,EA 35 05 23 2 H,EA,ENA 3C 06 22 30 A,H 74 04 23 34 WNA,ME,E 74 04 23 34 ME,ENA,E 34 05 22 46 WNA,H,ENA 75 04 23 50 WNA,ME,E 75 04 23 50 ME,ENA,E 35 05 23 2 WNA,H,ENA GPS Schedule no 49 ( 2 November 2007) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 38 31 0 10 I CC 19 0 42 SAF 38 31 0 10 H D4 31 0 26 I AC 03 1 14 I D4 31 0 26 H 34 06 0 58 WNA,EA,ENA AD 03 1 30 I A0 23 0 42 ME,EA,E 35 06 1 14 WNA,EA,ENA AE 03 1 46 I,EA A4 20 0 58 SAF 34 07 1 30 WNA,EA,ENA AC 19 2 2 I AC 03 1 14 A D4 06 2 2 WNA,ENA CC 11 2 18 SAF AD 03 1 30 A D5 06 2 18 WNA,ENA 3C 31 2 34 H,EA AE 03 1 46 A,EA 3C 31 2 34 A,EA AD 19 2 50 I,EA AC 19 2 2 A 35 07 3 6 WNA,ENA 3C 22 3 22 H A0 13 2 18 ME,EA,E 3C 22 3 22 A CC 20 3 38 SAF F1 03 2 34 I D6 06 4 10 WNA,ENA,SAM CD 20 4 10 SAF AD 19 2 50 A,EA 34 18 4 42 WNA,ENA 3C 16 5 30 H A0 25 3 6 ME,EA,E 3C 16 5 30 A CC 13 6 2 SAF A1 25 3 22 ME,EA,E 34 22 6 18 WNA,ENA CD 13 6 18 SAF A0 27 3 38 ME,EA,E 38 11 7 22 I D4 13 6 34 SAF A1 27 3 54 ME,EA,E 3C 20 7 38 A,EA AC 25 6 50 I A2 27 4 10 ME,EA,E 80 03 7 54 WNA,A 3C 20 7 38 H,EA F1 13 4 26 I 34 31 8 10 WNA,ENA,SAM 80 03 7 54 WNA,H A0 08 4 42 ME,EA,E 35 31 8 26 WNA,ENA,SAM AC 28 9 14 I,EA F1 08 4 58 I D4 31 8 42 WNA,ENA,SAM 3C 23 9 46 H,EA A1 08 5 14 ME,EA,E 3C 23 9 46 A,EA 3C 17 11 6 H,EA A2 08 5 30 ME,EA,E 34 20 10 18 WNA,EA CC 26 11 22 SAF BC 17 5 46 SAF,ME 35 20 10 34 WNA,EA,ENA CD 26 11 38 SAF F2 08 6 2 I D4 20 10 50 WNA,EA,ENA D4 26 12 10 SAF FB 08 6 18 I 3C 17 11 6 A,EA 3C 08 13 30 H A0 28 6 34 ME,EA,E 34 23 11 38 WNA,EA,ENA 3C 04 13 46 H,EA AC 25 6 50 A 35 23 11 54 WNA,EA,ENA AC 29 14 2 I,EA FC 08 7 6 I 34 13 12 58 WNA,EA,ENA 3D 04 14 18 H,EA 38 11 7 22 H 35 13 13 14 WNA,EA,ENA D4 04 14 34 H FD 08 7 38 I 3C 08 13 30 A CC 12 15 6 SAF BC 04 8 26 SAF,ME,EA 3C 04 13 46 A,EA 3C 02 15 22 H,EA AC 28 9 14 A,EA 3D 04 14 18 A,EA CD 12 15 38 SAF BC 09 10 2 SAF,ME,E D4 04 14 34 A CC 05 16 26 SAF BC 05 12 26 SAF,ME,E 34 27 14 50 WNA,EA,ENA AC 09 16 58 I,EA BC 30 12 58 SAF,ME,E 3C 02 15 22 A,EA AC 24 17 14 I,EA BD 30 13 30 SAF,ME,E D4 13 15 54 WNA,ENA,SAM AD 24 17 42 I,EA D4 30 13 46 SAF,ME,E 34 08 16 10 WNA,EA,ENA CC 06 17 58 SAF AC 29 14 2 A,EA 38 29 16 26 I CD 06 18 14 SAF A0 24 14 34 ME,EA,E 3C 12 19 2 A,EA CC 07 18 46 SAF BD 07 15 54 SAF,ME,EA,E 38 09 19 18 I 3C 12 19 2 H,EA 38 29 16 26 H 34 04 20 22 WNA,ENA,SAM CC 16 20 54 SAF AC 09 16 58 A,EA 35 04 20 38 WNA,ENA,SAM CD 16 21 26 SAF AC 24 17 14 A,EA D4 04 20 54 WNA,ENA,SAM D4 16 21 42 SAF AD 24 17 42 A,EA 34 12 22 14 WNA,EA,ENA A4 16 21 58 SAF,I A0 22 18 46 ME,EA,E 3C 06 22 30 A,EA 3C 06 22 30 H,EA 38 09 19 18 H 34 05 22 46 WNA,EA,ENA CC 03 23 18 SAF BC 31 20 38 SAF,ME,EA 35 05 23 2 WNA,EA,ENA 3C 21 23 34 H A0 01 21 26 ME,EA,E 3C 21 23 34 A CD 19 23 50 SAF A4 16 21 58 SAF,A GPS Schedule no 49 ( 2 November 2007) *** 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 27 0 26 SAF,E,SAM BC 27 0 26 ME,E,SAM 18 10 0 10 WNA,ENA A0 23 0 42 I,EA,E CC 19 0 42 A BC 27 0 26 SAF,ME,E BC 08 1 14 SAF,SAM A4 20 0 58 I F8 17 0 42 SAM BD 08 1 30 SAF,E,SAM BC 08 1 14 ME,SAM FB 17 0 58 SAM D4 08 1 46 SAF,E,SAM BD 08 1 30 ME,E,SAM BC 08 1 14 SAF,ME D5 08 2 2 SAF,E,SAM D4 08 1 46 ME,E,SAM BD 08 1 30 SAF,ME,E A0 13 2 18 I,EA,E D5 08 2 2 ME,E,SAM D4 08 1 46 SAF,ME,E 74 10 2 50 WNA,ENA,E CC 11 2 18 A D5 08 2 2 SAF,ME,E A0 25 3 6 I,EA,E CA 04 3 6 SAM F8 02 2 18 SAM A1 25 3 22 I,EA,E CB 04 3 22 SAM 68 26 2 34 ENA A0 27 3 38 I,EA,E CC 20 3 38 A FB 02 2 50 SAM A1 27 3 54 I,EA,E CD 20 4 10 A CA 04 3 6 SAF A2 27 4 10 I,EA,E CA 02 4 26 SAM CB 04 3 22 SAF 74 29 4 26 WNA,ENA,E BC 17 5 46 ME,I FC 02 3 38 SAM A0 08 4 42 I,EA,E CC 13 6 2 A FD 02 3 54 SAM 74 26 4 58 WNA,ENA,E CD 13 6 18 A D6 06 4 10 WNA,H,ENA A1 08 5 14 I,EA,E D4 13 6 34 A CA 02 4 26 SAF A2 08 5 30 I,EA,E BC 04 8 26 ME,I,EA FE 02 4 42 SAM BC 17 5 46 SAF,I BC 09 10 2 ME,I,E F8 09 4 58 SAM A0 28 6 34 I,EA,E BC 06 10 34 ME,E,SAM 68 24 5 14 ENA 74 09 7 6 WNA,ENA,E BC 07 10 50 ME,E,SAM F8 05 5 30 SAM BC 04 8 26 SAF,I,EA CC 26 11 22 A FB 05 5 46 SAM BC 09 10 2 SAF,I,E CD 26 11 38 A 18 21 6 2 WNA,ENA BC 06 10 34 SAF,E,SAM D4 26 12 10 A FC 05 6 18 SAM BC 07 10 50 SAF,E,SAM BC 05 12 26 ME,I,E FD 05 6 34 SAM 74 31 12 10 WNA,ENA,E BC 30 12 58 ME,I,E 18 18 6 50 WNA,ENA,E BC 05 12 26 SAF,I,E BD 30 13 30 ME,I,E FE 05 7 6 SAM BC 30 12 58 SAF,I,E D4 30 13 46 ME,I,E 19 18 7 22 WNA,ENA,E BD 30 13 30 SAF,I,E CC 12 15 6 A 1A 18 7 38 WNA,ENA,E D4 30 13 46 SAF,I,E CD 12 15 38 A FE 05 7 54 SAM 74 16 14 2 WNA,ENA,E BD 07 15 54 ME,I,EA,E 34 31 8 10 WNA,H,ENA 75 16 14 18 WNA,ENA,E CC 05 16 26 A 35 31 8 26 WNA,H,ENA A0 24 14 34 I,EA,E BC 16 16 42 ME,E,SAM D4 31 8 42 WNA,H,ENA BD 07 15 54 SAF,I,EA,E BD 16 16 58 ME,E,SAM BC 06 10 34 SAF,ME,E BC 16 16 42 SAF,E,SAM CC 06 17 58 A BC 07 10 50 SAF,ME,E BD 16 16 58 SAF,E,SAM CD 06 18 14 A D4 13 15 54 WNA,H,ENA 74 19 17 14 WNA,ENA,E CC 07 18 46 A BC 16 16 42 SAF,ME,E A0 22 18 46 I,EA,E BC 31 20 38 ME,I,EA BD 16 16 58 SAF,ME,E 74 11 19 18 WNA,ENA,E,SAM CC 16 20 54 A 18 27 18 30 WNA,ENA 75 11 19 34 WNA,ENA,E BC 23 21 10 ME,E,SAM 74 11 19 18 WNA,ME,ENA,E BC 31 20 38 SAF,I,EA CD 16 21 26 A 34 04 20 22 WNA,H,ENA BC 23 21 10 SAF,E,SAM D4 16 21 42 A 35 04 20 38 WNA,H,ENA A0 01 21 26 I,EA,E A4 16 21 58 I,A D4 04 20 54 WNA,H,ENA BC 13 22 14 SAF,E,SAM BC 13 22 14 ME,E,SAM BC 23 21 10 SAF,ME,E BD 13 22 46 SAF,E,SAM BD 13 22 46 ME,E,SAM 18 17 21 42 WNA,ENA,E D5 13 23 2 SAF,E,SAM D5 13 23 2 ME,E,SAM BC 13 22 14 SAF,ME,E 74 04 23 34 WNA,ENA,E CC 03 23 18 A BD 13 22 46 SAF,ME,E 75 04 23 50 WNA,ENA,E CD 19 23 50 A D5 13 23 2 SAF,ME,E