25 March 2005 FA/GPSW.394 Dear Colleagues, Please find enclosed tracking schedule No. 44 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 53461 (01 April 2005) 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 eNBS-typef 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 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for multi-channel receivers will allow us to cease publication of this common-view schedule.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 44 * * for implementation on MJD 53461 (2005 April 01) 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, 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 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 16, 2003); 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. 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 44 ( 1 April 2005) *** Europe *** Class PRN Start Connects h m A0 07 0 10 ME,I,EA 18 18 0 26 WNA,ENA,SAM A1 07 0 42 ME,I,EA BC 09 2 18 SAF,ME,I 18 14 2 34 WNA,ENA,SAM 19 14 2 50 WNA,ENA,SAM BD 09 3 6 SAF,ME,I A0 02 3 22 ME,I,EA A1 02 3 54 ME,I,EA A2 02 4 10 ME,I,EA 74 25 4 58 WNA,ME,ENA,SAM BC 30 5 46 SAF,ME,I BD 30 6 2 SAF,ME,I A0 06 6 34 ME,I,EA A1 06 6 50 ME,I,EA BC 18 7 38 SAF,ME,I 18 03 8 10 WNA,ENA,SAM BD 18 8 26 SAF,ME,I 74 03 8 54 WNA,ME,ENA BC 22 9 10 SAF,ME,I BD 22 9 26 SAF,ME,I D4 22 9 42 SAF,ME,I A0 18 9 58 ME,I,EA A0 15 10 30 ME,I,EA A0 22 11 18 ME,I,EA 18 11 11 34 WNA,ENA,SAM 74 11 11 50 WNA,ME,ENA,SAM BC 01 12 6 SAF,ME,I BD 01 12 38 SAF,ME,I 18 24 13 26 WNA,ENA,SAM 74 24 14 14 WNA,ME,ENA 18 07 14 30 WNA,ENA,SAM 19 07 15 2 WNA,ENA,SAM 74 04 16 22 WNA,ME,ENA A0 23 17 42 ME,I,EA 18 02 18 14 WNA,ENA,SAM 74 10 19 34 WNA,ME,ENA 18 29 19 50 WNA,ENA,SAM 19 29 20 6 WNA,ENA,SAM 1A 29 20 22 WNA,ENA,SAM A0 27 20 38 ME,I,EA 18 26 20 54 WNA,ENA,SAM A1 27 21 10 ME,I,EA A0 08 21 42 ME,I,EA 74 26 21 58 WNA,ME,ENA A0 28 23 2 ME,I,EA BD 07 23 18 SAF,ME,I 74 09 23 50 WNA,ME,ENA GPS Schedule no 44 ( 1 April 2005) *** 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 15 0 10 WNA,SAM 18 15 0 10 ENA,SAM A0 07 0 10 ME,I,E 18 18 0 26 WNA,E,SAM 18 18 0 26 ENA,E,SAM 3C 20 0 26 A,H 68 18 0 42 SAM 34 01 1 14 H,ENA A1 07 0 42 ME,I,E 69 18 0 58 SAM 34 11 1 30 H,EA BC 04 0 58 SAF,ME,I 34 01 1 14 WNA,H 35 11 2 2 H,EA 34 11 1 30 WNA,H 68 22 1 30 SAM 35 01 2 18 H,ENA 35 11 2 2 WNA,H 69 22 1 46 SAM 18 14 2 34 ENA,E,SAM 3C 13 2 50 A,H 6A 22 2 2 SAM 19 14 2 50 ENA,E,SAM 34 20 3 6 WNA,H,ENA 35 01 2 18 WNA,H 34 20 3 6 H,EA,ENA A0 02 3 22 ME,I,E 18 14 2 34 WNA,E,SAM 35 20 3 38 H,ENA A1 02 3 54 ME,I,E 19 14 2 50 WNA,E,SAM 34 23 4 26 H,EA,ENA A2 02 4 10 ME,I,E 34 20 3 6 WNA,H,EA 35 23 4 42 H,EA,ENA 34 23 4 26 WNA,H,ENA 35 20 3 38 WNA,H 74 25 4 58 ME,ENA,E,SAM 35 23 4 42 WNA,H,ENA 68 16 3 54 SAM 34 13 5 46 H,EA,ENA 34 13 5 46 WNA,H,ENA 34 23 4 26 WNA,H,EA 35 13 6 18 H,ENA 3C 04 6 2 A,H 35 23 4 42 WNA,H,EA 34 27 7 22 H,EA,ENA A0 06 6 34 ME,I,E 74 25 4 58 WNA,ME,E,SAM 35 27 7 54 H,ENA A1 06 6 50 ME,I,E 34 13 5 46 WNA,H,EA 18 03 8 10 ENA,E,SAM 3D 04 7 6 A,H 35 13 6 18 WNA,H 34 08 8 26 H,EA,ENA 34 27 7 22 WNA,H,ENA 34 27 7 22 WNA,H,EA 74 03 8 54 ME,ENA,E 3C 02 7 38 A,H 35 27 7 54 WNA,H 18 27 11 2 ENA,SAM 34 08 8 26 WNA,H,ENA 18 03 8 10 WNA,E,SAM 18 11 11 34 ENA,E,SAM 3C 10 9 42 A,H 34 08 8 26 WNA,H,EA 74 11 11 50 ME,ENA,E,SAM A0 18 9 58 ME,I,E 74 03 8 54 WNA,ME,E 34 09 12 54 H,EA AC 09 10 14 I,A 18 27 11 2 WNA,SAM 34 04 13 10 H,ENA,SAM A0 15 10 30 ME,I,E 18 11 11 34 WNA,E,SAM 18 24 13 26 ENA,E,SAM A0 22 11 18 ME,I,E 74 11 11 50 WNA,ME,E,SAM 35 04 13 42 H,ENA,SAM 3C 05 11 34 A,H 34 04 13 10 WNA,H,SAM 74 24 14 14 ME,ENA,E 3D 05 12 6 A,H 18 24 13 26 WNA,E,SAM 18 07 14 30 ENA,E,SAM D4 05 12 22 A,H 35 04 13 42 WNA,H,SAM 34 05 14 46 H,EA,ENA 34 09 12 54 WNA,H 74 24 14 14 WNA,ME,E 19 07 15 2 ENA,E,SAM AC 18 13 10 I,A 18 07 14 30 WNA,E,SAM 34 30 15 50 H,EA BC 25 13 26 SAF,ME,I 34 05 14 46 WNA,H,EA 35 30 16 6 H,EA AC 22 13 58 I,A 19 07 15 2 WNA,E,SAM 74 04 16 22 ME,ENA,E AD 22 14 14 I,A 74 04 16 22 WNA,ME,E 34 06 17 26 H,EA,ENA 34 05 14 46 WNA,H,ENA 34 06 17 26 WNA,H,EA 18 02 18 14 ENA,E,SAM 3C 06 15 2 A,H 18 02 18 14 WNA,E,SAM 35 06 18 30 H,ENA AC 14 15 34 I,A,H 35 06 18 30 WNA,H 74 10 19 34 ME,ENA,E 34 30 15 50 WNA,H 74 10 19 34 WNA,ME,E 18 29 19 50 ENA,E,SAM 35 30 16 6 WNA,H 18 29 19 50 WNA,E,SAM 19 29 20 6 ENA,E,SAM AC 01 17 10 I,A 19 29 20 6 WNA,E,SAM 1A 29 20 22 ENA,E,SAM 34 06 17 26 WNA,H,ENA 1A 29 20 22 WNA,E,SAM D4 06 20 38 H,ENA,SAM A0 23 17 42 ME,I,E D4 06 20 38 WNA,H,SAM 18 26 20 54 ENA,E,SAM AC 03 18 14 I,A 18 26 20 54 WNA,E,SAM 80 16 21 26 A,H,EA A0 27 20 38 ME,I,E 74 26 21 58 WNA,ME,E 74 26 21 58 ME,ENA,E A1 27 21 10 ME,I,E 18 21 22 46 WNA,SAM 18 21 22 46 ENA,SAM 80 16 21 26 WNA,A,H 34 15 23 34 WNA,H,SAM 34 15 23 34 H,ENA,SAM A0 08 21 42 ME,I,E 74 09 23 50 WNA,ME,E 74 09 23 50 ME,ENA,E A0 28 23 2 ME,I,E GPS Schedule no 44 ( 1 April 2005) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 3C 20 0 26 A,EA 3C 20 0 26 H,EA A0 07 0 10 ME,EA,E 3C 03 0 42 A 3C 03 0 42 H F1 07 0 26 I 3C 23 0 58 A 3C 23 0 58 H A1 07 0 42 ME,EA,E 34 01 1 14 WNA,ENA 3D 23 1 46 H BC 04 0 58 SAF,ME,EA 34 11 1 30 WNA,EA CC 10 2 34 SAF BC 02 2 2 SAF,ME 3D 23 1 46 A 3C 13 2 50 H,EA BC 09 2 18 SAF,ME,E 35 11 2 2 WNA,EA CC 29 4 10 SAF BD 09 3 6 SAF,ME,E 35 01 2 18 WNA,ENA CC 26 4 42 SAF A0 02 3 22 ME,EA,E 3C 13 2 50 A,EA CD 26 5 14 SAF A1 02 3 54 ME,EA,E 34 20 3 6 WNA,EA,ENA 3C 08 5 30 H A2 02 4 10 ME,EA,E 35 20 3 38 WNA,ENA 3C 04 6 2 H,EA BC 05 5 30 SAF,ME 34 23 4 26 WNA,EA,ENA CC 09 6 34 SAF BC 30 5 46 SAF,ME,E 35 23 4 42 WNA,EA,ENA 3D 04 7 6 H,EA BD 30 6 2 SAF,ME,E 3C 08 5 30 A 3C 02 7 38 H,EA A0 06 6 34 ME,EA,E 34 13 5 46 WNA,EA,ENA CC 05 8 10 SAF A1 06 6 50 ME,EA,E 3C 04 6 2 A,EA 3C 10 9 42 H,EA BC 18 7 38 SAF,ME,E 35 13 6 18 WNA,ENA AC 09 10 14 I,EA BD 18 8 26 SAF,ME,E 3D 04 7 6 A,EA CC 06 10 30 SAF BC 22 9 10 SAF,ME,E 34 27 7 22 WNA,EA,ENA CD 06 10 46 SAF BD 22 9 26 SAF,ME,E 3C 02 7 38 A,EA D4 06 11 2 SAF D4 22 9 42 SAF,ME,E 35 27 7 54 WNA,ENA 3C 05 11 34 H,EA A0 18 9 58 ME,EA,E 34 08 8 26 WNA,EA,ENA 3D 05 12 6 H,EA AC 09 10 14 A,EA 3C 10 9 42 A,EA D4 05 12 22 H,EA A0 15 10 30 ME,EA,E 3C 05 11 34 A,EA AC 18 13 10 I,EA A0 22 11 18 ME,EA,E 38 09 11 50 I A4 15 13 42 SAF,I 38 09 11 50 H 3D 05 12 6 A,EA AC 22 13 58 I,EA BC 01 12 6 SAF,ME,E D4 05 12 22 A,EA AD 22 14 14 I,EA BD 01 12 38 SAF,ME,E 34 09 12 54 WNA,EA CC 16 14 30 SAF AC 18 13 10 A,EA 34 04 13 10 WNA,ENA,SAM A4 16 14 46 SAF,I BC 25 13 26 SAF,ME,EA 35 04 13 42 WNA,ENA,SAM 3C 06 15 2 H,EA A4 15 13 42 SAF,A 34 05 14 46 WNA,EA,ENA AC 14 15 34 I,H,EA AC 22 13 58 A,EA 3C 06 15 2 A,EA CC 03 15 50 SAF AD 22 14 14 A,EA 38 14 15 18 I CC 19 16 22 SAF A4 16 14 46 SAF,A AC 14 15 34 I,A,EA CD 19 16 54 SAF 38 14 15 18 H 34 30 15 50 WNA,EA AC 01 17 10 I,EA AC 14 15 34 A,H,EA 35 30 16 6 WNA,EA 3C 15 17 58 H 38 25 16 54 H 38 25 16 54 I AC 03 18 14 I,EA AC 01 17 10 A,EA 34 06 17 26 WNA,EA,ENA 3D 15 18 46 H A0 23 17 42 ME,EA,E 3C 15 17 58 A CC 11 19 2 SAF AC 03 18 14 A,EA 35 06 18 30 WNA,ENA CD 11 19 18 SAF 38 16 19 2 H 3D 15 18 46 A CC 20 20 6 SAF A0 27 20 38 ME,EA,E 38 16 19 2 I A4 23 20 54 SAF,I A4 23 20 54 SAF,A D4 06 20 38 WNA,ENA,SAM 80 16 21 26 WNA,H,EA A1 27 21 10 ME,EA,E 80 16 21 26 WNA,A,EA CC 24 21 42 SAF A0 08 21 42 ME,EA,E 3C 16 21 58 A 3C 16 21 58 H BC 07 22 30 SAF,ME 3D 16 22 30 A CC 13 22 14 SAF A0 28 23 2 ME,EA,E 34 15 23 34 WNA,ENA,SAM 3D 16 22 30 H BD 07 23 18 SAF,ME,E 38 11 23 50 I CD 13 23 2 SAF 38 11 23 50 H GPS Schedule no 44 ( 1 April 2005) *** 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 07 0 10 I,EA,E BC 04 0 58 ME,I,EA 18 15 0 10 WNA,ENA A1 07 0 42 I,EA,E CA 06 1 14 SAM 18 18 0 26 WNA,ENA,E BC 04 0 58 SAF,I,EA BC 02 2 2 ME,I 68 18 0 42 ENA BC 02 2 2 SAF,I BC 09 2 18 ME,I,E 69 18 0 58 ENA BC 09 2 18 SAF,I,E CC 10 2 34 A CA 06 1 14 SAF BD 09 3 6 SAF,I,E BD 09 3 6 ME,I,E 68 22 1 30 ENA A0 02 3 22 I,EA,E CC 29 4 10 A 69 22 1 46 ENA A1 02 3 54 I,EA,E CC 26 4 42 A 6A 22 2 2 ENA A2 02 4 10 I,EA,E CD 26 5 14 A F8 06 2 18 SAM 74 25 4 58 WNA,ENA,E,SAM BC 05 5 30 ME,I 18 14 2 34 WNA,ENA,E BC 05 5 30 SAF,I BC 30 5 46 ME,I,E 19 14 2 50 WNA,ENA,E BC 30 5 46 SAF,I,E BD 30 6 2 ME,I,E F8 16 3 6 SAM BD 30 6 2 SAF,I,E BC 15 6 18 ME,SAM FB 16 3 22 SAM BC 15 6 18 SAF,SAM CC 09 6 34 A F8 14 3 38 SAM A0 06 6 34 I,EA,E BD 15 7 22 ME,SAM 68 16 3 54 ENA A1 06 6 50 I,EA,E BC 18 7 38 ME,I,E FB 14 4 10 SAM BD 15 7 22 SAF,SAM CC 05 8 10 A FC 14 4 26 SAM BC 18 7 38 SAF,I,E BD 18 8 26 ME,I,E F8 01 4 42 SAM BD 18 8 26 SAF,I,E BC 22 9 10 ME,I,E 74 25 4 58 WNA,ME,ENA,E 74 03 8 54 WNA,ENA,E BD 22 9 26 ME,I,E FB 01 5 14 SAM BC 22 9 10 SAF,I,E D4 22 9 42 ME,I,E FC 01 5 30 SAM BD 22 9 26 SAF,I,E BC 16 10 14 ME,SAM FD 01 5 46 SAM D4 22 9 42 SAF,I,E CC 06 10 30 A FE 01 6 2 SAM A0 18 9 58 I,EA,E CD 06 10 46 A BC 15 6 18 SAF,ME BC 16 10 14 SAF,SAM D4 06 11 2 A BD 15 7 22 SAF,ME A0 15 10 30 I,EA,E BC 01 12 6 ME,I,E 18 03 8 10 WNA,ENA,E A0 22 11 18 I,EA,E BD 01 12 38 ME,I,E BC 16 10 14 SAF,ME 74 11 11 50 WNA,ENA,E,SAM BC 25 13 26 ME,I,EA 18 27 11 2 WNA,ENA BC 01 12 6 SAF,I,E A4 15 13 42 I,A 18 11 11 34 WNA,ENA,E BD 01 12 38 SAF,I,E BC 23 13 58 ME,SAM 74 11 11 50 WNA,ME,ENA,E BC 25 13 26 SAF,I,EA CC 16 14 30 A 34 04 13 10 WNA,H,ENA BC 23 13 58 SAF,SAM A4 16 14 46 I,A 18 24 13 26 WNA,ENA,E 74 24 14 14 WNA,ENA,E BC 13 15 18 ME,SAM 35 04 13 42 WNA,H,ENA BC 13 15 18 SAF,SAM BD 13 15 34 ME,SAM BC 23 13 58 SAF,ME BD 13 15 34 SAF,SAM CC 03 15 50 A 18 07 14 30 WNA,ENA,E 74 04 16 22 WNA,ENA,E CC 19 16 22 A 19 07 15 2 WNA,ENA,E A0 23 17 42 I,EA,E CD 19 16 54 A BC 13 15 18 SAF,ME BC 08 18 30 SAF,SAM BC 08 18 30 ME,SAM BD 13 15 34 SAF,ME 74 10 19 34 WNA,ENA,E CC 11 19 2 A 18 02 18 14 WNA,ENA,E A0 27 20 38 I,EA,E CD 11 19 18 A BC 08 18 30 SAF,ME A1 27 21 10 I,EA,E CC 20 20 6 A 18 29 19 50 WNA,ENA,E BC 10 21 26 SAF,SAM A4 23 20 54 I,A 19 29 20 6 WNA,ENA,E A0 08 21 42 I,EA,E BC 10 21 26 ME,SAM 1A 29 20 22 WNA,ENA,E 74 26 21 58 WNA,ENA,E CC 24 21 42 A D4 06 20 38 WNA,H,ENA BC 07 22 30 SAF,I CC 13 22 14 A 18 26 20 54 WNA,ENA,E A0 28 23 2 I,EA,E BC 07 22 30 ME,I BC 10 21 26 SAF,ME BD 07 23 18 SAF,I,E CD 13 23 2 A 18 21 22 46 WNA,ENA 74 09 23 50 WNA,ENA,E BD 07 23 18 ME,I,E 34 15 23 34 WNA,H,ENA