22 September 2003 FA/GPSW.391 Dear Colleagues, Please find enclosed tracking schedule No. 41 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 52911 ( 29 September 2003) 00 h 00 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 00 h 06 should be entered in the AOA receivers at 00 h 04. 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 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for “all-in-view” observations by multi-channel receivers will allow us to cease publication of this common-view schedule. ***************************************************************************** * GPS Schedule no 41 * * for implementation on MJD 52911 (2003 September 29) 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, CAO, CH, DLR, DTAG, IEN, IFAG, IPQ, JV, LDS, LT, Mad*, NIMB, NMC, NPL, OMH, OP, ORB,PL, PTB, RAAI*, RIRT*, ROA, SMU, SP, SU, TP, UME, VSL East North America ENA AO*,APL, NRC, USNO West North America WNA CNM, CNMP*, NIST, AMC, Gold*, WWV* Hawaii H WWVH* East Asia EA BIRM, CRL, JATC, KRIS, NAO, NIM, NIMT, NMIJ, NMLS, NTSC, SCL, SG, TL Australia and New Zealand A AUS, Can*, MSL India I NPLI Middle East ME INPL South Africa SAF CSIR 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 15, 2002); other laboratories are indicated by an asterisk. * Mad, Gold, Can : JPL Deep Space Network, Madrid, Goldstone, Canberra. WWV, WWVH : NIST stations in Colorado and Hawaii. AO : Arecibo Observatory. Kou: CNES Kourou Center. RIRT: Russian Institute of Radionavigation and Time, Saint Petersburg. RAAI: Romanian Academy Astronomical Institute, Bucarest. CNMP: Centro Nacional de Metrologia de Panama. 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 41 (29 September 2003) *** Europe *** Class PRN Start Connects h m A0 18 0 6 ME,I,EA A0 15 0 22 ME,I,EA 18 11 0 38 WNA,ENA,SAM A0 23 0 54 ME,I,EA 19 11 1 10 WNA,ENA,SAM BC 03 1 26 SAF,ME,I A0 14 1 42 ME,I,EA A1 14 1 58 ME,I,EA A2 14 2 14 ME,I,EA A3 14 2 30 ME,I,EA D4 14 2 46 ME,I,EA 18 07 4 6 WNA,ENA,SAM 19 07 4 22 WNA,ENA,SAM BC 11 4 54 SAF,ME,I 74 04 5 58 WNA,ME,ENA BC 20 6 30 SAF,ME,I BD 20 6 46 SAF,ME,I A0 01 7 2 ME,I,EA 18 24 7 34 WNA,ENA,SAM 74 10 9 10 WNA,ME,ENA 18 17 9 42 WNA,ENA,SAM 18 29 9 58 WNA,ENA,SAM A0 27 10 14 ME,I,EA 19 17 10 30 WNA,ENA,SAM 74 26 11 18 WNA,ME,ENA BC 07 12 6 SAF,ME,I 18 09 12 38 WNA,ENA,SAM D4 07 12 54 SAF,ME,I 18 18 13 42 WNA,ENA,SAM 19 18 13 58 WNA,ENA,SAM BD 24 16 22 SAF,ME,I,EA 18 14 16 38 WNA,ENA,SAM A0 24 17 42 ME,I,EA BC 17 17 58 SAF,ME,I BD 17 18 14 SAF,ME,I 74 25 18 30 WNA,ME,ENA,SAM BC 30 19 18 SAF,ME,I BD 30 19 34 SAF,ME,I A0 17 20 6 ME,I,EA 74 16 20 22 WNA,ME,ENA 18 03 21 10 WNA,ENA,SAM 74 02 21 38 WNA,ME,ENA 19 03 21 54 WNA,ENA,SAM A0 21 22 10 ME,I,EA 74 03 22 26 WNA,ME,ENA BC 23 22 58 SAF,ME,I A1 18 23 30 ME,I,EA 74 31 23 46 WNA,ME,ENA GPS Schedule no 41 (29 September 2003) *** 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 27 0 6 WNA,SAM 18 27 0 6 ENA,SAM A0 18 0 6 ME,I,E 34 08 0 22 WNA,H 34 08 0 22 H,ENA A0 15 0 22 ME,I,E 18 11 0 38 WNA,E,SAM 18 11 0 38 ENA,E,SAM A0 23 0 54 ME,I,E 34 07 0 54 WNA,H 34 07 0 54 H,ENA 3C 05 1 26 A,H 19 11 1 10 WNA,E,SAM 19 11 1 10 ENA,E,SAM A0 14 1 42 ME,I,E 18 08 1 26 WNA,SAM 18 08 1 26 ENA,SAM A1 14 1 58 ME,I,E 35 07 1 42 WNA,H 35 07 1 42 H,ENA A2 14 2 14 ME,I,E 34 04 2 46 WNA,H,SAM 34 04 2 46 H,ENA,SAM A3 14 2 30 ME,I,E 34 09 3 2 WNA,H,EA 34 09 3 2 H,EA,ENA D4 14 2 46 ME,I,E 35 04 3 18 WNA,H,SAM 35 04 3 18 H,ENA,SAM 34 09 3 2 WNA,H,ENA 68 28 3 34 SAM 34 05 3 50 H,EA BC 25 3 18 SAF,ME,I 18 07 4 6 WNA,E,SAM 18 07 4 6 ENA,E,SAM 34 05 3 50 WNA,H 19 07 4 22 WNA,E,SAM 19 07 4 22 ENA,E,SAM AC 23 4 6 I,A 35 05 4 38 WNA,H,EA 35 05 4 38 H,EA,ENA 3C 06 4 22 A,H 74 04 5 58 WNA,ME,E 74 04 5 58 ME,ENA,E 35 05 4 38 WNA,H,ENA 18 10 6 14 WNA,SAM 18 10 6 14 ENA,SAM 3D 06 5 10 A,H 35 06 7 18 WNA,H,EA 34 06 6 46 H,EA AC 14 5 26 I,A,H 18 24 7 34 WNA,E,SAM 35 06 7 18 H,EA,ENA BC 02 5 42 SAF,ME,I 68 29 8 38 SAM 18 24 7 34 ENA,E,SAM 34 06 6 46 WNA,H 68 26 8 54 SAM 34 21 8 22 H,EA A0 01 7 2 ME,I,E 74 10 9 10 WNA,ME,E 35 21 8 38 H,EA 35 06 7 18 WNA,H,ENA 69 26 9 26 SAM 74 10 9 10 ME,ENA,E AC 03 7 50 I,A 18 17 9 42 WNA,E,SAM 18 17 9 42 ENA,E,SAM AD 03 8 6 I,A 18 29 9 58 WNA,E,SAM 18 29 9 58 ENA,E,SAM 34 21 8 22 WNA,H D4 06 10 14 WNA,H,SAM D4 06 10 14 H,ENA,SAM 35 21 8 38 WNA,H 19 17 10 30 WNA,E,SAM 19 17 10 30 ENA,E,SAM A0 27 10 14 ME,I,E 34 15 10 46 WNA,H,EA 34 15 10 46 H,EA,ENA 34 15 10 46 WNA,H,ENA 35 15 11 2 WNA,H,EA 35 15 11 2 H,EA,ENA 35 15 11 2 WNA,H,ENA 74 26 11 18 WNA,ME,E 74 26 11 18 ME,ENA,E 3C 02 11 18 A,H 68 09 11 50 SAM 18 09 12 38 ENA,E,SAM 3D 02 11 50 A,H 18 09 12 38 WNA,E,SAM D4 15 13 26 H,ENA,SAM D4 02 12 6 A,H D4 15 13 26 WNA,H,SAM 18 18 13 42 ENA,E,SAM 3C 20 13 42 A,H 18 18 13 42 WNA,E,SAM 19 18 13 58 ENA,E,SAM 3D 20 13 58 A,H 19 18 13 58 WNA,E,SAM 34 11 15 18 H,EA D4 20 14 14 A,H 18 14 16 38 WNA,E,SAM 18 14 16 38 ENA,E,SAM BD 04 14 30 SAF,ME,I 34 01 17 58 WNA,H,EA 34 01 17 58 H,EA,ENA 34 11 15 18 WNA,H 35 01 18 14 WNA,H,EA 35 01 18 14 H,EA,ENA AC 28 15 34 I,A 74 25 18 30 WNA,ME,E,SAM 74 25 18 30 ME,ENA,E,SAM 3D 01 16 6 A,H 34 02 18 46 WNA,H,SAM 34 02 18 46 H,ENA,SAM BD 24 16 22 SAF,ME,I,E 34 13 19 2 WNA,H,EA 34 13 19 2 H,EA,ENA A0 24 17 42 ME,I,E 35 13 19 18 WNA,H,EA 35 13 19 18 H,EA,ENA 34 01 17 58 WNA,H,ENA 74 16 20 22 WNA,ME,E 74 16 20 22 ME,ENA,E 35 01 18 14 WNA,H,ENA 18 03 21 10 WNA,E,SAM 18 03 21 10 ENA,E,SAM 34 13 19 2 WNA,H,ENA 74 02 21 38 WNA,ME,E 74 02 21 38 ME,ENA,E 35 13 19 18 WNA,H,ENA 19 03 21 54 WNA,E,SAM 19 03 21 54 ENA,E,SAM A0 17 20 6 ME,I,E D4 13 22 10 WNA,H,SAM D4 13 22 10 H,ENA,SAM A0 21 22 10 ME,I,E 74 03 22 26 WNA,ME,E 74 03 22 26 ME,ENA,E AC 09 23 14 I,A 74 31 23 46 WNA,ME,E 74 31 23 46 ME,ENA,E A1 18 23 30 ME,I,E GPS Schedule no 41 (29 September 2003) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 34 08 0 22 WNA,ENA CC 06 0 6 SAF A0 18 0 6 ME,EA,E 34 07 0 54 WNA,ENA CD 06 0 38 SAF A0 15 0 22 ME,EA,E 38 09 1 10 I 3C 05 1 26 H,EA A0 23 0 54 ME,EA,E 3C 05 1 26 A,EA 3C 29 2 30 H 38 09 1 10 H 35 07 1 42 WNA,ENA A4 15 3 2 SAF,I BC 03 1 26 SAF,ME,E 3C 29 2 30 A CC 15 3 34 SAF A0 14 1 42 ME,EA,E 34 04 2 46 WNA,ENA,SAM CD 15 3 50 SAF A1 14 1 58 ME,EA,E 34 09 3 2 WNA,EA,ENA AC 23 4 6 I,EA A2 14 2 14 ME,EA,E 35 04 3 18 WNA,ENA,SAM 3C 06 4 22 H,EA A3 14 2 30 ME,EA,E 34 05 3 50 WNA,EA AD 23 4 38 I D4 14 2 46 ME,EA,E 3C 06 4 22 A,EA 3D 06 5 10 H,EA A4 15 3 2 SAF,A 35 05 4 38 WNA,EA,ENA AC 14 5 26 I,H,EA BC 25 3 18 SAF,ME,EA 3D 06 5 10 A,EA CC 31 6 14 SAF AC 23 4 6 A,EA AC 14 5 26 I,A,EA CD 31 7 18 SAF AD 23 4 38 A 34 06 6 46 WNA,EA D4 31 7 34 SAF BC 11 4 54 SAF,ME,E 35 06 7 18 WNA,EA,ENA AC 03 7 50 I,EA AC 14 5 26 A,H,EA 34 21 8 22 WNA,EA AD 03 8 6 I,EA BC 02 5 42 SAF,ME,EA 35 21 8 38 WNA,EA AC 31 8 22 I BC 20 6 30 SAF,ME,E 38 02 9 26 I CC 11 8 38 SAF BD 20 6 46 SAF,ME,E D4 06 10 14 WNA,ENA,SAM CC 20 9 42 SAF A0 01 7 2 ME,EA,E 34 15 10 46 WNA,EA,ENA CD 20 9 58 SAF AC 03 7 50 A,EA 35 15 11 2 WNA,EA,ENA AC 01 10 30 I AD 03 8 6 A,EA 3C 02 11 18 A,EA A4 01 10 46 SAF,I AC 31 8 22 A 3C 16 11 34 A CC 01 11 2 SAF 38 02 9 26 H 3D 02 11 50 A,EA 3C 02 11 18 H,EA A0 27 10 14 ME,EA,E D4 02 12 6 A,EA 3C 16 11 34 H AC 01 10 30 A D5 02 12 22 A 3D 02 11 50 H,EA A4 01 10 46 SAF,A D4 15 13 26 WNA,ENA,SAM D4 02 12 6 H,EA BC 07 12 6 SAF,ME,E 3C 20 13 42 A,EA D5 02 12 22 H BD 07 12 22 SAF,ME 3D 20 13 58 A,EA AC 27 13 10 I D4 07 12 54 SAF,ME,E D4 20 14 14 A,EA 3C 20 13 42 H,EA AC 27 13 10 A 3C 01 15 2 A 3D 20 13 58 H,EA BD 04 14 30 SAF,ME,EA 34 11 15 18 WNA,EA D4 20 14 14 H,EA AC 28 15 34 A,EA 3D 01 16 6 A,EA 3C 01 15 2 H BC 24 15 50 SAF,ME 3C 13 16 22 A AC 28 15 34 I,EA BD 24 16 22 SAF,ME,EA,E 3D 13 16 38 A 3D 01 16 6 H,EA BC 09 16 38 SAF,ME 34 01 17 58 WNA,EA,ENA 3C 13 16 22 H A0 24 17 42 ME,EA,E 35 01 18 14 WNA,EA,ENA 3D 13 16 38 H BC 17 17 58 SAF,ME,E 34 02 18 46 WNA,ENA,SAM CC 29 17 26 SAF BD 17 18 14 SAF,ME,E 34 13 19 2 WNA,EA,ENA CC 26 18 30 SAF BC 30 19 18 SAF,ME,E 35 13 19 18 WNA,EA,ENA 3C 08 19 34 H BD 30 19 34 SAF,ME,E 3C 08 19 34 A CC 09 20 6 SAF 38 24 19 50 H 38 24 19 50 I CD 09 20 22 SAF A0 17 20 6 ME,EA,E 3C 04 20 38 A 3C 04 20 38 H 38 10 21 10 H 3D 04 20 54 A 3D 04 20 54 H A0 21 22 10 ME,EA,E 38 10 21 10 I CC 05 21 54 SAF BC 23 22 58 SAF,ME,E D4 13 22 10 WNA,ENA,SAM AC 09 23 14 I,EA AC 09 23 14 A,EA 3C 10 23 46 A 3C 10 23 46 H A1 18 23 30 ME,EA,E GPS Schedule no 41 (29 September 2003) *** 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 18 0 6 I,EA,E CC 06 0 6 A 18 27 0 6 WNA,ENA A0 15 0 22 I,EA,E CD 06 0 38 A F8 11 0 22 SAM A0 23 0 54 I,EA,E CA 02 0 54 SAM 18 11 0 38 WNA,ENA,E BC 03 1 26 SAF,I,E BC 03 1 26 ME,I,E CA 02 0 54 SAF A0 14 1 42 I,EA,E A4 15 3 2 I,A 19 11 1 10 WNA,ENA,E A1 14 1 58 I,EA,E BC 25 3 18 ME,I,EA 18 08 1 26 WNA,ENA A2 14 2 14 I,EA,E CC 15 3 34 A F8 20 1 42 SAM A3 14 2 30 I,EA,E CD 15 3 50 A FB 20 1 58 SAM D4 14 2 46 I,EA,E BC 11 4 54 ME,I,E F8 08 2 14 SAM BC 25 3 18 SAF,I,EA BC 13 5 10 ME,SAM FB 08 2 30 SAM BC 11 4 54 SAF,I,E BC 02 5 42 ME,I,EA 34 04 2 46 WNA,H,ENA BC 13 5 10 SAF,SAM CA 08 5 58 SAM F8 13 3 2 SAM BC 02 5 42 SAF,I,EA CC 31 6 14 A 35 04 3 18 WNA,H,ENA 74 04 5 58 WNA,ENA,E BC 20 6 30 ME,I,E 68 28 3 34 ENA BC 20 6 30 SAF,I,E BD 20 6 46 ME,I,E FB 13 3 50 SAM BD 20 6 46 SAF,I,E CB 08 7 2 SAM 18 07 4 6 WNA,ENA,E A0 01 7 2 I,EA,E CD 31 7 18 A 19 07 4 22 WNA,ENA,E BC 08 8 6 SAF,SAM D4 31 7 34 A BC 13 5 10 SAF,ME BC 04 8 22 SAF,SAM BC 08 8 6 ME,SAM CA 08 5 58 SAF 74 10 9 10 WNA,ENA,E BC 04 8 22 ME,SAM 18 10 6 14 WNA,ENA A0 27 10 14 I,EA,E CC 11 8 38 A CB 08 7 2 SAF 74 26 11 18 WNA,ENA,E CA 04 9 10 SAM 18 24 7 34 WNA,ENA,E BC 10 11 34 SAF,SAM CC 20 9 42 A BC 08 8 6 SAF,ME BC 07 12 6 SAF,I,E CD 20 9 58 A BC 04 8 22 SAF,ME BD 07 12 22 SAF,I A4 01 10 46 I,A 68 29 8 38 ENA D4 07 12 54 SAF,I,E CC 01 11 2 A 68 26 8 54 ENA BD 04 14 30 SAF,I,EA BC 10 11 34 ME,SAM CA 04 9 10 SAF BC 24 15 50 SAF,I BC 07 12 6 ME,I,E 69 26 9 26 ENA BD 24 16 22 SAF,I,EA,E BD 07 12 22 ME,I 18 17 9 42 WNA,ENA,E BC 09 16 38 SAF,I D4 07 12 54 ME,I,E 18 29 9 58 WNA,ENA,E BC 06 16 54 SAF,SAM BD 04 14 30 ME,I,EA D4 06 10 14 WNA,H,ENA A0 24 17 42 I,EA,E BC 24 15 50 ME,I 19 17 10 30 WNA,ENA,E BC 17 17 58 SAF,I,E BD 24 16 22 ME,I,EA,E BC 10 11 34 SAF,ME BD 17 18 14 SAF,I,E BC 09 16 38 ME,I 68 09 11 50 ENA 74 25 18 30 WNA,ENA,E,SAM BC 06 16 54 ME,SAM 18 09 12 38 WNA,ENA,E BC 30 19 18 SAF,I,E CC 29 17 26 A D4 15 13 26 WNA,H,ENA BD 30 19 34 SAF,I,E BC 17 17 58 ME,I,E 18 18 13 42 WNA,ENA,E BC 15 19 50 SAF,SAM BD 17 18 14 ME,I,E 19 18 13 58 WNA,ENA,E A0 17 20 6 I,EA,E CC 26 18 30 A 18 14 16 38 WNA,ENA,E 74 16 20 22 WNA,ENA,E BC 30 19 18 ME,I,E BC 06 16 54 SAF,ME 74 02 21 38 WNA,ENA,E BD 30 19 34 ME,I,E 74 25 18 30 WNA,ME,ENA,E A0 21 22 10 I,EA,E BC 15 19 50 ME,SAM 34 02 18 46 WNA,H,ENA 74 03 22 26 WNA,ENA,E CC 09 20 6 A BC 15 19 50 SAF,ME BC 16 22 42 SAF,SAM CD 09 20 22 A 18 03 21 10 WNA,ENA,E BC 23 22 58 SAF,I,E CC 05 21 54 A 19 03 21 54 WNA,ENA,E BD 16 23 14 SAF,SAM BC 16 22 42 ME,SAM D4 13 22 10 WNA,H,ENA A1 18 23 30 I,EA,E BC 23 22 58 ME,I,E BC 16 22 42 SAF,ME 74 31 23 46 WNA,ENA,E BD 16 23 14 ME,SAM BD 16 23 14 SAF,ME