20 April 2007 FA/GPSW.398 Dear Colleagues, Please find enclosed tracking schedule No. 48 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 54222 (02 May 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 48 * * for implementation on MJD 54222 (02 May 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, IFAG, IPQ*, IT, JV, LDS, LT, Mad*, MIKE, MKEH*, NIMB, NPL, OB*, OCA*, OP, ORB, PL, PTB, RAAI*, RIRT*, ROA, 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 Annual Report of the BIPM Time Section, Volume 18, 2005); other laboratories are indicated by an asterisk. * AO : Arecibo Observatory. BIM : Bulgarian Institute of Metrology, formerly NMC. IPQ : Institute Portigues da Qualidade, Monte de Caparica, Portugal. Kou : CNES Kourou Center. Mad, Gold, Can : JPL Deep Space Network, Madrid, Goldstone, Canberra. MKEH : Hungarian Trade Licensing Office, formerly OMH. 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. ZA : Stands for Council for Scientific and Industrial Research, South Africa, formerly noted as CSIR. 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 48 ( 2 May 2007) *** Europe *** Class PRN Start Connects h m 74 31 0 46 WNA,ME,ENA BC 24 1 2 SAF,ME,I BC 30 1 34 SAF,ME,I BD 30 2 22 SAF,ME,I 74 16 2 38 WNA,ME,ENA A0 06 2 54 ME,I,EA A0 24 3 10 ME,I,EA A0 07 3 58 ME,I,EA BC 07 4 30 SAF,ME,I,EA 74 03 4 46 WNA,ME,ENA A0 21 5 2 ME,I,EA BC 22 5 18 SAF,ME,I A0 18 5 34 ME,I,EA 74 19 6 2 WNA,ME,ENA A1 18 6 34 ME,I,EA A0 22 7 6 ME,I,EA A1 22 7 22 ME,I,EA 18 11 7 38 WNA,ENA,SAM 74 11 7 54 WNA,ME,ENA 75 11 8 10 WNA,ME,ENA A0 14 8 26 ME,I,EA A1 14 8 42 ME,I,EA BC 01 8 58 SAF,ME,I A2 14 9 14 ME,I,EA BC 23 10 18 SAF,ME,SAM BD 23 10 34 SAF,ME,SAM D4 23 10 50 SAF,ME,SAM BC 13 11 22 SAF,ME,SAM BD 13 11 38 SAF,ME,SAM 74 04 12 26 WNA,ME,ENA 75 04 12 42 WNA,ME,ENA A0 23 13 46 ME,I,EA BC 08 14 2 SAF,ME,SAM BD 08 14 18 SAF,ME,SAM A0 25 14 34 ME,I,EA BC 04 14 50 SAF,ME,SAM 74 10 15 22 WNA,ME,ENA 75 10 15 38 WNA,ME,ENA A0 27 16 42 ME,I,EA 74 29 16 58 WNA,ME,ENA 75 29 17 14 WNA,ME,ENA 74 26 17 30 WNA,ME,ENA 75 26 17 46 WNA,ME,ENA BC 10 18 2 SAF,ME,SAM 74 09 19 38 WNA,ME,ENA BC 06 22 34 SAF,ME,SAM BD 06 23 6 SAF,ME,SAM BD 07 23 22 SAF,ME,SAM GPS Schedule no 48 ( 2 May 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 35 23 0 30 WNA,H,EA 34 23 0 14 H,EA 34 23 0 14 WNA,H 74 31 0 46 WNA,ME,E 35 23 0 30 H,EA,ENA 35 23 0 30 WNA,H,ENA 68 01 1 2 SAM 74 31 0 46 ME,ENA,E 34 13 1 34 WNA,H 69 01 1 18 SAM 34 13 1 34 H,EA 35 13 1 50 WNA,H,ENA 6A 01 1 34 SAM 35 13 1 50 H,EA,ENA 3D 04 2 38 A,H 35 13 1 50 WNA,H,EA 74 16 2 38 ME,ENA,E A0 06 2 54 ME,I,E 68 03 2 22 SAM 18 23 3 10 ENA,SAM A0 24 3 10 ME,I,E 74 16 2 38 WNA,ME,E 34 27 3 26 H,EA,ENA 34 27 3 26 WNA,H,ENA 69 03 2 54 SAM 19 23 3 42 ENA,SAM 3C 02 3 42 A,H 18 23 3 10 WNA,SAM 74 03 4 46 ME,ENA,E A0 07 3 58 ME,I,E 34 27 3 26 WNA,H,EA D4 13 5 2 H,ENA,SAM BC 07 4 30 SAF,ME,I,E 19 23 3 42 WNA,SAM 74 19 6 2 ME,ENA,E A0 21 5 2 ME,I,E 74 03 4 46 WNA,ME,E 34 29 6 18 H,EA A0 18 5 34 ME,I,E D4 13 5 2 WNA,H,SAM 34 08 6 50 H,ENA,SAM AC 24 6 2 I,A 74 19 6 2 WNA,ME,E 18 27 7 6 ENA,SAM 34 29 6 18 WNA,H 34 08 6 50 WNA,H,SAM 18 11 7 38 ENA,E,SAM A1 18 6 34 ME,I,E 18 27 7 6 WNA,SAM 74 11 7 54 ME,ENA,E A0 22 7 6 ME,I,E 18 11 7 38 WNA,E,SAM 75 11 8 10 ME,ENA,E A1 22 7 22 ME,I,E 74 11 7 54 WNA,ME,E 34 04 8 58 H,ENA,SAM 3C 12 7 38 A,H 75 11 8 10 WNA,ME,E 35 04 9 14 H,ENA,SAM A0 14 8 26 ME,I,E 34 04 8 58 WNA,H,SAM 34 09 9 30 H,EA,ENA A1 14 8 42 ME,I,E 35 04 9 14 WNA,H,SAM 34 12 10 18 H,EA A2 14 9 14 ME,I,E 34 09 9 30 WNA,H,EA 35 12 10 50 H,EA,ENA 34 09 9 30 WNA,H,ENA 35 12 10 50 WNA,H,EA 34 02 11 6 H,ENA 34 12 10 18 WNA,H 34 02 11 6 WNA,H 34 05 11 22 H,EA,ENA 3C 06 10 34 A,H 34 05 11 22 WNA,H,EA 34 30 12 10 H,EA,ENA 35 12 10 50 WNA,H,ENA 34 30 12 10 WNA,H,EA 74 04 12 26 ME,ENA,E 34 05 11 22 WNA,H,ENA 74 04 12 26 WNA,ME,E 75 04 12 42 ME,ENA,E 34 30 12 10 WNA,H,ENA 75 04 12 42 WNA,ME,E 34 06 13 30 H,EA,ENA 34 06 13 30 WNA,H,ENA 34 06 13 30 WNA,H,EA 34 07 14 2 H,EA,ENA A0 23 13 46 ME,I,E 34 07 14 2 WNA,H,EA 35 06 14 34 H,ENA 34 07 14 2 WNA,H,ENA 35 06 14 34 WNA,H 74 10 15 22 ME,ENA,E AC 03 14 18 I,A 74 10 15 22 WNA,ME,E 75 10 15 38 ME,ENA,E A0 25 14 34 ME,I,E 75 10 15 38 WNA,ME,E D4 06 16 26 H,ENA,SAM 3C 31 14 50 A,H D4 06 16 26 WNA,H,SAM D5 06 16 42 H,ENA,SAM 3D 31 15 6 A,H D5 06 16 42 WNA,H,SAM 74 29 16 58 ME,ENA,E AC 19 15 22 I,A 74 29 16 58 WNA,ME,E 75 29 17 14 ME,ENA,E A0 27 16 42 ME,I,E 75 29 17 14 WNA,ME,E 74 26 17 30 ME,ENA,E AC 25 17 14 I,A 74 26 17 30 WNA,ME,E 75 26 17 46 ME,ENA,E AD 25 17 30 I,A 75 26 17 46 WNA,ME,E 18 21 18 50 ENA,SAM AC 11 17 46 I,A 18 21 18 50 WNA,SAM 19 21 19 6 ENA,SAM AD 11 18 2 I,A 19 21 19 6 WNA,SAM 74 09 19 38 ME,ENA,E 3C 20 20 10 A,H 74 09 19 38 WNA,ME,E 34 31 20 42 H,ENA,SAM 3D 20 20 26 A,H 34 31 20 42 WNA,H,SAM 35 31 20 58 H,ENA,SAM BD 04 21 14 SAF,ME,I 35 31 20 58 WNA,H,SAM D4 31 21 14 H,ENA,SAM AC 28 21 46 I,A D4 31 21 14 WNA,H,SAM 80 19 21 30 A,H 34 20 22 50 WNA,H,ENA 34 20 22 50 WNA,H,EA 34 20 22 50 H,EA,ENA 35 20 23 6 WNA,H,ENA 35 20 23 6 WNA,H,EA 35 20 23 6 H,EA,ENA 3C 17 23 54 A,H GPS Schedule no 48 ( 2 May 2007) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 34 23 0 14 WNA,EA CC 26 0 14 SAF F1 02 0 14 I 35 23 0 30 WNA,EA,ENA CD 26 0 46 SAF F2 02 0 30 I 3C 08 1 2 A 3C 08 1 2 H FB 02 0 46 I 3D 08 1 18 A 3D 08 1 18 H BC 24 1 2 SAF,ME,E 34 13 1 34 WNA,EA D4 08 2 6 H FC 02 1 18 I 35 13 1 50 WNA,EA,ENA 3C 04 2 22 H BC 30 1 34 SAF,ME,E D4 08 2 6 A 3D 04 2 38 H,EA A4 12 1 50 SAF 3C 04 2 22 A CC 09 2 54 SAF A4 05 2 6 SAF 3D 04 2 38 A,EA D4 04 3 10 H BD 30 2 22 SAF,ME,E D4 04 3 10 A 3C 02 3 42 H,EA A4 30 2 38 SAF 34 27 3 26 WNA,EA,ENA CC 05 4 14 SAF A0 06 2 54 ME,EA,E 3C 02 3 42 A,EA CD 05 4 46 SAF A0 24 3 10 ME,EA,E D4 13 5 2 WNA,ENA,SAM CC 30 5 2 SAF A4 18 3 26 SAF 34 29 6 18 WNA,EA CD 30 5 34 SAF A5 18 3 42 SAF 34 08 6 50 WNA,ENA,SAM AC 24 6 2 I,EA A0 07 3 58 ME,EA,E 3C 12 7 38 A,EA CC 06 6 18 SAF F1 06 4 14 I 38 09 7 54 I CC 07 6 34 SAF BC 07 4 30 SAF,ME,EA,E 34 04 8 58 WNA,ENA,SAM CD 07 6 50 SAF F2 06 4 46 I 35 04 9 14 WNA,ENA,SAM D4 07 7 6 SAF A0 21 5 2 ME,EA,E 34 09 9 30 WNA,EA,ENA D5 07 7 22 SAF BC 22 5 18 SAF,ME,E 38 30 9 46 I 3C 12 7 38 H,EA A0 18 5 34 ME,EA,E 34 12 10 18 WNA,EA CC 16 9 30 SAF AC 24 6 2 A,EA 3C 06 10 34 A,EA CD 16 10 2 SAF F1 18 6 18 I 35 12 10 50 WNA,EA,ENA 3C 06 10 34 H,EA A1 18 6 34 ME,EA,E 34 02 11 6 WNA,ENA CC 03 11 54 SAF F1 14 6 50 I 34 05 11 22 WNA,EA,ENA CC 19 12 26 SAF A0 22 7 6 ME,EA,E 38 14 11 38 I CD 19 12 42 SAF A1 22 7 22 ME,EA,E 34 30 12 10 WNA,EA,ENA D4 19 12 58 SAF 38 09 7 54 H 38 31 12 42 I AC 03 14 18 I,EA A0 14 8 26 ME,EA,E 34 06 13 30 WNA,EA,ENA 3C 31 14 50 H,EA A1 14 8 42 ME,EA,E 34 07 14 2 WNA,EA,ENA 3D 31 15 6 H,EA BC 01 8 58 SAF,ME,E 35 06 14 34 WNA,ENA AC 19 15 22 I,EA A2 14 9 14 ME,EA,E 3C 31 14 50 A,EA CC 20 15 54 SAF 38 30 9 46 H 3D 31 15 6 A,EA A4 23 16 58 SAF,I 38 14 11 38 H D4 06 16 26 WNA,ENA,SAM AC 25 17 14 I,EA 38 31 12 42 H D5 06 16 42 WNA,ENA,SAM AD 25 17 30 I,EA A0 23 13 46 ME,EA,E 3C 16 18 34 A AC 11 17 46 I,EA AC 03 14 18 A,EA 38 11 19 54 I AD 11 18 2 I,EA A0 25 14 34 ME,EA,E 3C 20 20 10 A,EA CC 13 18 18 SAF AC 19 15 22 A,EA 3D 20 20 26 A,EA 3C 16 18 34 H A0 27 16 42 ME,EA,E 34 31 20 42 WNA,ENA,SAM CD 13 19 6 SAF A4 23 16 58 SAF,A 35 31 20 58 WNA,ENA,SAM 3C 20 20 10 H,EA AC 25 17 14 A,EA D4 31 21 14 WNA,ENA,SAM 3D 20 20 26 H,EA AD 25 17 30 A,EA 80 19 21 30 WNA,A 80 19 21 30 WNA,H AC 11 17 46 A,EA 3C 23 22 2 A AC 28 21 46 I,EA AD 11 18 2 A,EA 34 20 22 50 WNA,EA,ENA 3C 23 22 2 H 38 11 19 54 H 35 20 23 6 WNA,EA,ENA CC 29 23 38 SAF BD 04 21 14 SAF,ME,EA 3C 17 23 54 A,EA 3C 17 23 54 H,EA AC 28 21 46 A,EA GPS Schedule no 48 ( 2 May 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 74 31 0 46 WNA,ENA,E CC 26 0 14 A F8 14 0 14 SAM BC 24 1 2 SAF,I,E CD 26 0 46 A F8 03 0 30 SAM BC 30 1 34 SAF,I,E BC 24 1 2 ME,I,E FB 03 0 46 SAM BD 30 2 22 SAF,I,E BC 30 1 34 ME,I,E 68 01 1 2 ENA 74 16 2 38 WNA,ENA,E A4 12 1 50 I 69 01 1 18 ENA A0 06 2 54 I,EA,E A4 05 2 6 I 6A 01 1 34 ENA A0 24 3 10 I,EA,E BD 30 2 22 ME,I,E F8 01 1 50 SAM A0 07 3 58 I,EA,E A4 30 2 38 I FB 01 2 6 SAM BC 07 4 30 SAF,I,EA,E CC 09 2 54 A 68 03 2 22 ENA 74 03 4 46 WNA,ENA,E A4 18 3 26 I FC 01 2 38 SAM A0 21 5 2 I,EA,E A5 18 3 42 I 69 03 2 54 ENA BC 22 5 18 SAF,I,E CC 05 4 14 A 18 23 3 10 WNA,ENA A0 18 5 34 I,EA,E BC 07 4 30 ME,I,EA,E FD 01 3 26 SAM 74 19 6 2 WNA,ENA,E CD 05 4 46 A 19 23 3 42 WNA,ENA A1 18 6 34 I,EA,E CC 30 5 2 A FE 01 3 58 SAM A0 22 7 6 I,EA,E BC 22 5 18 ME,I,E F8 11 4 14 SAM A1 22 7 22 I,EA,E CD 30 5 34 A FB 11 4 30 SAM 74 11 7 54 WNA,ENA,E CC 06 6 18 A FC 11 4 46 SAM 75 11 8 10 WNA,ENA,E CC 07 6 34 A D4 13 5 2 WNA,H,ENA A0 14 8 26 I,EA,E CD 07 6 50 A FD 11 5 18 SAM A1 14 8 42 I,EA,E D4 07 7 6 A FE 11 5 34 SAM BC 01 8 58 SAF,I,E D5 07 7 22 A FE 11 6 2 SAM A2 14 9 14 I,EA,E BC 01 8 58 ME,I,E FE 11 6 18 SAM BC 23 10 18 SAF,E,SAM CC 16 9 30 A 34 08 6 50 WNA,H,ENA BD 23 10 34 SAF,E,SAM CD 16 10 2 A 18 27 7 6 WNA,ENA D4 23 10 50 SAF,E,SAM BC 23 10 18 ME,E,SAM 18 11 7 38 WNA,ENA,E BC 13 11 22 SAF,E,SAM BD 23 10 34 ME,E,SAM 34 04 8 58 WNA,H,ENA BD 13 11 38 SAF,E,SAM D4 23 10 50 ME,E,SAM 35 04 9 14 WNA,H,ENA 74 04 12 26 WNA,ENA,E BC 13 11 22 ME,E,SAM BC 23 10 18 SAF,ME,E 75 04 12 42 WNA,ENA,E BD 13 11 38 ME,E,SAM BD 23 10 34 SAF,ME,E A0 23 13 46 I,EA,E CC 03 11 54 A D4 23 10 50 SAF,ME,E BC 08 14 2 SAF,E,SAM CC 19 12 26 A BC 13 11 22 SAF,ME,E BD 08 14 18 SAF,E,SAM CD 19 12 42 A BD 13 11 38 SAF,ME,E A0 25 14 34 I,EA,E D4 19 12 58 A BC 08 14 2 SAF,ME,E BC 04 14 50 SAF,E,SAM BC 08 14 2 ME,E,SAM BD 08 14 18 SAF,ME,E 74 10 15 22 WNA,ENA,E BD 08 14 18 ME,E,SAM BC 04 14 50 SAF,ME,E 75 10 15 38 WNA,ENA,E BC 04 14 50 ME,E,SAM CA 04 15 38 SAF A0 27 16 42 I,EA,E CA 04 15 38 SAM D4 06 16 26 WNA,H,ENA 74 29 16 58 WNA,ENA,E CC 20 15 54 A D5 06 16 42 WNA,H,ENA 75 29 17 14 WNA,ENA,E A4 23 16 58 I,A BC 10 18 2 SAF,ME,E 74 26 17 30 WNA,ENA,E BC 10 18 2 ME,E,SAM 18 21 18 50 WNA,ENA 75 26 17 46 WNA,ENA,E CC 13 18 18 A 19 21 19 6 WNA,ENA BC 10 18 2 SAF,E,SAM CD 13 19 6 A 34 31 20 42 WNA,H,ENA 74 09 19 38 WNA,ENA,E BD 04 21 14 ME,I,EA 35 31 20 58 WNA,H,ENA BD 04 21 14 SAF,I,EA BC 06 22 34 ME,E,SAM D4 31 21 14 WNA,H,ENA BC 06 22 34 SAF,E,SAM BD 06 23 6 ME,E,SAM BC 06 22 34 SAF,ME,E BD 06 23 6 SAF,E,SAM BD 07 23 22 ME,E,SAM BD 06 23 6 SAF,ME,E BD 07 23 22 SAF,E,SAM CC 29 23 38 A BD 07 23 22 SAF,ME,E