21 October 2002 FA/GPSW.389 Dear Colleagues, Please find enclosed tracking schedule No. 39 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 52576 ( 29 October 2002) 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 14 at 00 h 38 should be entered in the AOA receivers at 00 h 36. 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for “all-in-view” observations by multi-channel receivers will allow us to cease publication of this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 39 * * for implementation on MJD 52576 (2002 October 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, LDS, LT, Mad*, NMC, NPL, OMH, OP, ORB, PL, PTB, RAAI*, RIRT*, ROA, SMU, SP, SU, TP, UME, VSL East North America ENA AO*, NRC, USNO West North America WNA CNM, 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, NIS* South Africa SAF CSIR South America SAM IGMA, Kou*, ONBA, ONRJ Laboratories participating in TAI are designated by their usual acronyms (see Table 3 of the Annual Report of the BIPM Time Section, Volume 14, 2001); 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. NIS: National Institute for Standards, Cairo. 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 39 (29 October 2002) *** Europe *** Class PRN Start Connects h m BC 03 0 6 SAF,ME,I BD 03 0 22 SAF,ME,I A0 14 0 38 ME,I,EA 18 28 1 10 WNA,ENA,SAM A1 14 1 42 ME,I,EA BC 11 3 2 SAF,ME,I BD 11 3 18 SAF,ME,I D4 11 3 50 SAF,ME,I A0 01 5 42 ME,I,EA 18 24 6 30 WNA,ENA,SAM A0 13 7 18 ME,I,EA A1 13 7 34 ME,I,EA 74 10 7 50 WNA,ME,ENA 18 29 8 22 WNA,ENA,SAM A0 27 8 38 ME,I,EA A1 27 8 54 ME,I,EA A2 27 9 10 ME,I,EA BC 28 9 26 SAF,ME,I A0 08 9 42 ME,I,EA 74 23 9 58 WNA,ME,ENA A1 08 10 14 ME,I,EA 18 09 11 18 WNA,ENA,SAM A0 28 11 34 ME,I,EA BD 07 11 50 SAF,ME,I 19 09 12 6 WNA,ENA,SAM 18 18 12 22 WNA,ENA,SAM 19 18 12 38 WNA,ENA,SAM 1A 18 12 54 WNA,ENA,SAM 18 14 15 2 WNA,ENA,SAM BD 24 15 18 SAF,ME,I,EA BC 09 15 34 SAF,ME,I A0 24 16 38 ME,I,EA BC 30 18 14 SAF,ME,I BD 30 18 30 SAF,ME,I D5 30 19 2 SAF,ME,I 74 22 19 34 WNA,ME,ENA 74 02 20 2 WNA,ME,ENA 75 02 20 18 WNA,ME,ENA BC 18 20 34 SAF,ME,I 74 03 20 50 WNA,ME,ENA BD 18 21 6 SAF,ME,I BC 22 21 22 SAF,ME,SAM A0 15 21 54 ME,I,EA BC 02 22 10 SAF,ME,SAM A0 18 22 26 ME,I,EA 74 31 22 42 WNA,ME,ENA 18 11 23 14 WNA,ENA,SAM BC 14 23 46 SAF,ME,I GPS Schedule no 39 (29 October 2002) *** 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 08 0 6 WNA,SAM 18 08 0 6 ENA,SAM 3C 23 0 6 A,H 34 07 0 22 WNA,H 34 07 0 22 H,ENA A0 14 0 38 ME,I,E 35 07 0 38 WNA,H 35 07 0 38 H,ENA AC 18 1 26 I,A D4 07 0 54 WNA,H D4 07 0 54 H,ENA A1 14 1 42 ME,I,E 18 28 1 10 WNA,E,SAM 18 28 1 10 ENA,E,SAM 34 05 2 30 WNA,H 60 20 1 26 ME,SAM 34 04 1 42 H,ENA,SAM 35 05 3 2 WNA,H 34 04 1 42 WNA,H,SAM 35 04 1 58 H,ENA,SAM D4 05 3 18 WNA,H,ENA 35 04 1 58 WNA,H,SAM D4 04 2 14 H,ENA,SAM D5 05 3 34 WNA,H,ENA D4 04 2 14 WNA,H,SAM 34 05 2 30 H,EA 3C 06 3 50 A,H D5 04 2 46 WNA,H D5 04 2 46 H,ENA AC 14 4 6 I,A,H D4 05 3 18 WNA,H,EA 35 05 3 2 H,EA 34 30 4 54 WNA,H,ENA D5 05 3 34 WNA,H,EA D4 05 3 18 H,EA,ENA A0 01 5 42 ME,I,E 68 07 4 6 SAM D5 05 3 34 H,EA,ENA 34 06 6 14 WNA,H,ENA D6 05 4 22 WNA,H D6 05 4 22 H,ENA AD 03 6 46 I,A D7 05 4 38 WNA,H D7 05 4 38 H,ENA AE 03 7 2 I,A 34 30 4 54 WNA,H,EA 34 30 4 54 H,EA,ENA A0 13 7 18 ME,I,E 18 10 5 10 WNA,SAM 18 10 5 10 ENA,SAM A1 13 7 34 ME,I,E D8 05 5 26 WNA,H D8 05 5 26 H,ENA 38 02 8 22 I,H 34 06 6 14 WNA,H,EA 34 06 6 14 H,EA,ENA A0 27 8 38 ME,I,E 18 24 6 30 WNA,E,SAM 18 24 6 30 ENA,E,SAM A1 27 8 54 ME,I,E 35 06 7 2 WNA,H 35 06 7 2 H,ENA A2 27 9 10 ME,I,E 68 29 7 18 SAM 74 10 7 50 ME,ENA,E A0 08 9 42 ME,I,E 68 26 7 34 SAM 18 29 8 22 ENA,E,SAM 3C 02 9 58 A,H 74 10 7 50 WNA,ME,E D4 06 9 10 H,ENA,SAM A1 08 10 14 ME,I,E 69 26 8 6 SAM D5 06 9 26 H,ENA,SAM 3D 02 10 46 A,H 18 29 8 22 WNA,E,SAM 74 23 9 58 ME,ENA,E 34 03 11 2 WNA,H D4 06 9 10 WNA,H,SAM 34 03 11 2 H,EA A0 28 11 34 ME,I,E D5 06 9 26 WNA,H,SAM 18 09 11 18 ENA,E,SAM 3C 20 12 22 A,H 74 23 9 58 WNA,ME,E 19 09 12 6 ENA,E,SAM 3D 20 12 38 A,H 18 09 11 18 WNA,E,SAM 18 18 12 22 ENA,E,SAM D4 20 13 10 A,H 19 09 12 6 WNA,E,SAM 19 18 12 38 ENA,E,SAM 34 11 14 14 WNA,H 18 18 12 22 WNA,E,SAM 1A 18 12 54 ENA,E,SAM AC 28 14 30 I,A 19 18 12 38 WNA,E,SAM 34 11 14 14 H,EA AD 28 14 46 I,A 1A 18 12 54 WNA,E,SAM 34 25 14 30 H,ENA BD 24 15 18 SAF,ME,I,E 34 25 14 30 WNA,H 18 14 15 2 ENA,E,SAM 34 20 15 34 WNA,H,ENA 18 14 15 2 WNA,E,SAM 34 20 15 34 H,EA,ENA 3D 13 16 6 A,H 34 20 15 34 WNA,H,EA 34 01 16 54 H,EA,ENA D4 13 16 22 A,H 34 01 16 54 WNA,H,EA 34 13 17 58 H,EA A0 24 16 38 ME,I,E 35 13 18 14 WNA,H,EA 35 13 18 14 H,EA,ENA 34 01 16 54 WNA,H,ENA D4 13 18 30 WNA,H,EA D4 13 18 30 H,EA,ENA 34 13 17 58 WNA,H 74 22 19 34 WNA,ME,E 74 22 19 34 ME,ENA,E 35 13 18 14 WNA,H,ENA 74 02 20 2 WNA,ME,E 74 02 20 2 ME,ENA,E D4 13 18 30 WNA,H,ENA 75 02 20 18 WNA,ME,E 75 02 20 18 ME,ENA,E 3C 04 18 46 A,H 74 03 20 50 WNA,ME,E 74 03 20 50 ME,ENA,E AC 26 19 18 I,A 34 08 21 6 WNA,H,EA 34 08 21 6 H,EA,ENA 34 08 21 6 WNA,H,ENA D5 13 21 38 WNA,H,SAM D5 13 21 38 H,ENA,SAM A0 15 21 54 ME,I,E 74 31 22 42 WNA,ME,E 74 31 22 42 ME,ENA,E AC 09 22 10 I,A 18 11 23 14 WNA,E,SAM 18 11 23 14 ENA,E,SAM A0 18 22 26 ME,I,E GPS Schedule no 39 (29 October 2002) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3C 23 0 6 A,EA 3C 23 0 6 H,EA BC 03 0 6 SAF,ME,E 34 07 0 22 WNA,ENA F9 05 0 22 A BD 03 0 22 SAF,ME,E 35 07 0 38 WNA,ENA F9 06 0 38 A A0 14 0 38 ME,EA,E D4 07 0 54 WNA,ENA AC 15 0 54 I AC 15 0 54 A 34 04 1 42 WNA,ENA,SAM AC 18 1 26 I,EA AC 18 1 26 A,EA 35 04 1 58 WNA,ENA,SAM CC 03 3 34 SAF A1 14 1 42 ME,EA,E D4 04 2 14 WNA,ENA,SAM 3C 06 3 50 H,EA BC 11 3 2 SAF,ME,E 34 05 2 30 WNA,EA AC 14 4 6 I,H,EA BD 11 3 18 SAF,ME,E D5 04 2 46 WNA,ENA CD 03 4 22 SAF D4 11 3 50 SAF,ME,E 35 05 3 2 WNA,EA CC 31 5 10 SAF AC 14 4 6 A,H,EA D4 05 3 18 WNA,EA,ENA CD 31 5 26 SAF A0 01 5 42 ME,EA,E D5 05 3 34 WNA,EA,ENA D4 31 5 42 SAF AC 03 6 14 A 3C 06 3 50 A,EA D5 31 5 58 SAF AD 03 6 46 A,EA AC 14 4 6 I,A,EA AC 03 6 14 I AE 03 7 2 A,EA D6 05 4 22 WNA,ENA AD 03 6 46 I,EA A0 13 7 18 ME,EA,E D7 05 4 38 WNA,ENA AE 03 7 2 I,EA A1 13 7 34 ME,EA,E 34 30 4 54 WNA,EA,ENA CC 11 7 34 SAF 38 02 8 22 H,EA D8 05 5 26 WNA,ENA CC 20 8 54 SAF A0 27 8 38 ME,EA,E 34 06 6 14 WNA,EA,ENA 3C 02 9 58 H,EA A1 27 8 54 ME,EA,E 35 06 7 2 WNA,ENA 3D 02 10 46 H,EA A2 27 9 10 ME,EA,E 38 02 8 22 I,EA CC 13 11 2 SAF BC 28 9 26 SAF,ME,E D4 06 9 10 WNA,ENA,SAM D4 02 11 18 H A0 08 9 42 ME,EA,E D5 06 9 26 WNA,ENA,SAM CD 13 11 34 SAF A1 08 10 14 ME,EA,E 3C 02 9 58 A,EA AC 27 12 6 I 38 31 10 30 H 38 31 10 30 I 3C 20 12 22 H,EA BC 07 11 18 SAF,ME 3D 02 10 46 A,EA 3D 20 12 38 H,EA A0 28 11 34 ME,EA,E 34 03 11 2 WNA,EA D4 20 13 10 H,EA BD 07 11 50 SAF,ME,E D4 02 11 18 A 3C 01 13 42 H AC 27 12 6 A 3C 20 12 22 A,EA AC 28 14 30 I,EA BC 24 14 14 SAF,ME 3D 20 12 38 A,EA AD 28 14 46 I,EA AC 28 14 30 A,EA D4 20 13 10 A,EA CC 10 15 2 SAF AD 28 14 46 A,EA 3C 01 13 42 A 3C 13 15 18 H BD 24 15 18 SAF,ME,EA,E 34 11 14 14 WNA,EA A4 10 15 50 SAF,I BC 09 15 34 SAF,ME,E 34 25 14 30 WNA,ENA 3D 13 16 6 H,EA A4 10 15 50 SAF,A 3C 13 15 18 A D4 13 16 22 H,EA A0 24 16 38 ME,EA,E 34 20 15 34 WNA,EA,ENA CC 29 16 38 SAF 38 04 17 10 H 3D 13 16 6 A,EA CC 26 16 54 SAF BC 30 18 14 SAF,ME,E D4 13 16 22 A,EA CD 26 17 26 SAF BD 30 18 30 SAF,ME,E 34 01 16 54 WNA,EA,ENA D4 26 17 42 SAF D4 30 18 46 SAF,ME 38 04 17 10 I 3C 04 18 46 H,EA D5 30 19 2 SAF,ME,E 34 13 17 58 WNA,EA AC 26 19 18 I,EA AC 26 19 18 A,EA 35 13 18 14 WNA,EA,ENA CC 09 19 34 SAF 38 10 20 2 H D4 13 18 30 WNA,EA,ENA CC 05 20 2 SAF BC 18 20 34 SAF,ME,E 3C 04 18 46 A,EA CD 05 20 18 SAF BD 18 21 6 SAF,ME,E 38 10 20 2 I D4 05 20 50 SAF A0 15 21 54 ME,EA,E 34 08 21 6 WNA,EA,ENA AC 09 22 10 I,EA AC 09 22 10 A,EA D5 13 21 38 WNA,ENA,SAM 3C 10 22 42 H A0 18 22 26 ME,EA,E 3C 10 22 42 A CC 06 23 14 SAF BC 14 23 46 SAF,ME,E GPS Schedule no 39 (29 October 2002) *** 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 03 0 6 SAF,I,E BC 03 0 6 ME,I,E 18 08 0 6 WNA,ENA BD 03 0 22 SAF,I,E BD 03 0 22 ME,I,E F8 20 0 22 SAM A0 14 0 38 I,EA,E BC 01 2 30 ME,SAM FB 20 0 38 SAM 60 20 1 26 ENA,SAM CA 13 2 46 SAM F8 08 0 54 SAM A1 14 1 42 I,EA,E BC 11 3 2 ME,I,E 18 28 1 10 WNA,ENA,E BC 01 2 30 SAF,SAM BD 11 3 18 ME,I,E 60 20 1 26 ME,ENA BC 11 3 2 SAF,I,E CC 03 3 34 A 34 04 1 42 WNA,H,ENA BD 11 3 18 SAF,I,E D4 11 3 50 ME,I,E 35 04 1 58 WNA,H,ENA D4 11 3 50 SAF,I,E CD 03 4 22 A D4 04 2 14 WNA,H,ENA A0 01 5 42 I,EA,E CC 31 5 10 A BC 01 2 30 SAF,ME BC 08 6 14 SAF,SAM CD 31 5 26 A CA 13 2 46 SAF BD 08 7 2 SAF,SAM D4 31 5 42 A F8 13 3 2 SAM A0 13 7 18 I,EA,E D5 31 5 58 A FB 13 3 18 SAM A1 13 7 34 I,EA,E BC 08 6 14 ME,SAM FC 13 3 34 SAM 74 10 7 50 WNA,ENA,E BD 08 7 2 ME,SAM F8 28 3 50 SAM A0 27 8 38 I,EA,E CC 11 7 34 A 68 07 4 6 ENA A1 27 8 54 I,EA,E CC 20 8 54 A F8 07 4 22 SAM A2 27 9 10 I,EA,E BC 28 9 26 ME,I,E FB 07 4 38 SAM BC 28 9 26 SAF,I,E BC 10 10 30 ME,SAM FC 07 4 54 SAM A0 08 9 42 I,EA,E CC 13 11 2 A 18 10 5 10 WNA,ENA 74 23 9 58 WNA,ENA,E BC 07 11 18 ME,I FD 07 5 26 SAM A1 08 10 14 I,EA,E CD 13 11 34 A FE 07 5 42 SAM BC 10 10 30 SAF,SAM BD 07 11 50 ME,I,E FE 07 5 58 SAM BC 07 11 18 SAF,I BC 24 14 14 ME,I BC 08 6 14 SAF,ME A0 28 11 34 I,EA,E CC 10 15 2 A 18 24 6 30 WNA,ENA,E BD 07 11 50 SAF,I,E BD 24 15 18 ME,I,EA,E FE 07 6 46 SAM BC 24 14 14 SAF,I BC 09 15 34 ME,I,E BD 08 7 2 SAF,ME BD 24 15 18 SAF,I,EA,E A4 10 15 50 I,A 68 29 7 18 ENA BC 09 15 34 SAF,I,E CC 29 16 38 A 68 26 7 34 ENA A0 24 16 38 I,EA,E CC 26 16 54 A F8 04 7 50 SAM BC 15 17 58 SAF,SAM CD 26 17 26 A 69 26 8 6 ENA BC 30 18 14 SAF,I,E D4 26 17 42 A 18 29 8 22 WNA,ENA,E BD 30 18 30 SAF,I,E BC 15 17 58 ME,SAM F8 09 8 38 SAM D4 30 18 46 SAF,I BC 30 18 14 ME,I,E D4 06 9 10 WNA,H,ENA D5 30 19 2 SAF,I,E BD 30 18 30 ME,I,E D5 06 9 26 WNA,H,ENA 74 22 19 34 WNA,ENA,E D4 30 18 46 ME,I BC 10 10 30 SAF,ME 74 02 20 2 WNA,ENA,E D5 30 19 2 ME,I,E 18 09 11 18 WNA,ENA,E 75 02 20 18 WNA,ENA,E CC 09 19 34 A 19 09 12 6 WNA,ENA,E BC 18 20 34 SAF,I,E CC 05 20 2 A 18 18 12 22 WNA,ENA,E 74 03 20 50 WNA,ENA,E CD 05 20 18 A 19 18 12 38 WNA,ENA,E BD 18 21 6 SAF,I,E BC 18 20 34 ME,I,E 1A 18 12 54 WNA,ENA,E BC 22 21 22 SAF,E,SAM D4 05 20 50 A 18 14 15 2 WNA,ENA,E A0 15 21 54 I,EA,E BD 18 21 6 ME,I,E BC 15 17 58 SAF,ME BC 02 22 10 SAF,E,SAM BC 22 21 22 ME,E,SAM BC 22 21 22 SAF,ME,E A0 18 22 26 I,EA,E BC 02 22 10 ME,E,SAM D5 13 21 38 WNA,H,ENA 74 31 22 42 WNA,ENA,E BD 02 22 58 ME,SAM BC 02 22 10 SAF,ME,E BD 02 22 58 SAF,SAM CC 06 23 14 A BD 02 22 58 SAF,ME BC 14 23 46 SAF,I,E BC 14 23 46 ME,I,E 18 11 23 14 WNA,ENA,E