22 March 2004 FA/GPSW.392 Dear Colleagues, Please find enclosed tracking schedule No. 42 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 53097 ( 02 April 2004) 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 In the future, when all single-channel receivers are withdrawn from operation, the use of a fixed reference date for "all-in-view" observations by multi-channel receivers will allow us to cease publication of this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 42 * * for implementation on MJD 53097 (2004 April 02) 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 42 ( 2 April 2004) *** Europe *** Class PRN Start Connects h m A0 28 0 14 ME,I,EA BC 07 0 30 SAF,ME,I A0 07 1 2 ME,I,EA A1 07 1 18 ME,I,EA A2 07 1 50 ME,I,EA A3 07 2 6 ME,I,EA BC 09 3 42 SAF,ME,I 18 14 3 58 WNA,ENA,SAM BD 09 4 14 SAF,ME,I A0 24 4 30 ME,I,EA BD 17 4 46 SAF,ME,I A0 17 5 18 ME,I,EA A1 17 5 34 ME,I,EA 74 25 5 50 WNA,ME,ENA,SAM A2 17 6 6 ME,I,EA A3 17 6 22 ME,I,EA D4 17 6 38 ME,I,EA BC 30 7 10 SAF,ME,I BD 30 7 26 SAF,ME,I 74 16 7 42 WNA,ME,ENA 75 16 7 58 WNA,ME,ENA 18 03 8 14 WNA,ENA,SAM 19 03 8 30 WNA,ENA,SAM BC 18 8 46 SAF,ME,I BD 18 9 14 SAF,ME,I 74 03 9 30 WNA,ME,ENA 18 31 9 46 WNA,ENA,SAM A0 21 10 2 ME,I,EA BC 16 10 18 SAF,ME,SAM 74 31 11 6 WNA,ME,ENA BC 14 11 54 SAF,ME,I A0 22 12 10 ME,I,EA 18 11 12 26 WNA,ENA,SAM 74 11 12 42 WNA,ME,ENA,SAM 75 11 12 58 WNA,ME,ENA A0 14 13 30 ME,I,EA BC 11 15 38 SAF,ME,I 18 07 15 54 WNA,ENA,SAM 74 04 17 14 WNA,ME,ENA BC 20 18 2 SAF,ME,I 74 24 18 50 WNA,ME,ENA,SAM 75 24 19 6 WNA,ME,ENA,SAM 18 17 20 10 WNA,ENA,SAM 19 17 20 26 WNA,ENA,SAM 1A 17 20 42 WNA,ENA,SAM A0 27 21 30 ME,I,EA 74 29 21 46 WNA,ME,ENA 18 09 23 54 WNA,ENA,SAM GPS Schedule no 42 ( 2 April 2004) *** 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 21 0 14 WNA,SAM 18 21 0 14 ENA,SAM A0 28 0 14 ME,I,E 34 15 1 2 WNA,H,SAM 34 15 1 2 H,ENA,SAM A0 07 1 2 ME,I,E 35 15 1 18 WNA,H,SAM 35 15 1 18 H,ENA,SAM A1 07 1 18 ME,I,E 68 18 1 34 SAM 34 11 2 38 H,EA A2 07 1 50 ME,I,E 68 22 2 22 SAM 34 20 3 42 H,EA A3 07 2 6 ME,I,E 69 22 2 38 SAM 18 14 3 58 ENA,E,SAM 34 11 2 38 WNA,H 6A 22 2 54 SAM 35 20 4 14 H,EA,ENA AC 28 2 54 I,A 6B 22 3 10 SAM 34 01 4 46 H,EA 34 20 3 42 WNA,H 18 14 3 58 WNA,E,SAM 35 01 5 2 H,EA,ENA 3C 13 3 58 A,H 35 20 4 14 WNA,H,EA 74 25 5 50 ME,ENA,E,SAM 35 20 4 14 WNA,H,ENA 68 14 4 30 SAM 34 13 6 54 H,EA,ENA A0 24 4 30 ME,I,E 35 01 5 2 WNA,H,EA 74 16 7 42 ME,ENA,E 34 01 4 46 WNA,H 74 25 5 50 WNA,ME,E,SAM 75 16 7 58 ME,ENA,E 35 01 5 2 WNA,H,ENA 34 13 6 54 WNA,H,EA 18 03 8 14 ENA,E,SAM A0 17 5 18 ME,I,E 68 03 7 10 SAM 19 03 8 30 ENA,E,SAM A1 17 5 34 ME,I,E 74 16 7 42 WNA,ME,E 34 08 9 14 H,EA A2 17 6 6 ME,I,E 75 16 7 58 WNA,ME,E 74 03 9 30 ME,ENA,E A3 17 6 22 ME,I,E 18 03 8 14 WNA,E,SAM 18 31 9 46 ENA,E,SAM D4 17 6 38 ME,I,E 19 03 8 30 WNA,E,SAM 35 13 10 2 H,ENA,SAM 34 13 6 54 WNA,H,ENA 74 03 9 30 WNA,ME,E 74 31 11 6 ME,ENA,E 3C 04 7 10 A,H 18 31 9 46 WNA,E,SAM 34 29 11 38 H,EA 3D 04 7 26 A,H 35 13 10 2 WNA,H,SAM 35 08 11 54 H,ENA,SAM 3C 24 8 30 A,H 74 31 11 6 WNA,ME,E 18 11 12 26 ENA,E,SAM 34 08 9 14 WNA,H 35 08 11 54 WNA,H,SAM 74 11 12 42 ME,ENA,E,SAM A0 21 10 2 ME,I,E 18 11 12 26 WNA,E,SAM 75 11 12 58 ME,ENA,E AC 09 10 34 I,A 74 11 12 42 WNA,ME,E,SAM 34 04 14 2 H,ENA,SAM 3C 10 10 50 A,H 75 11 12 58 WNA,ME,E 35 04 14 18 H,ENA,SAM 34 29 11 38 WNA,H 34 04 14 2 WNA,H,SAM D4 04 14 34 H,ENA,SAM A0 22 12 10 ME,I,E 35 04 14 18 WNA,H,SAM 34 05 15 6 H,EA 3C 05 12 26 A,H D4 04 14 34 WNA,H,SAM 35 05 15 22 H,EA,ENA 3D 05 12 42 A,H 35 05 15 22 WNA,H,EA D4 05 15 38 H,EA,ENA D4 05 12 58 A,H D4 05 15 38 WNA,H,EA 18 07 15 54 ENA,E,SAM D5 05 13 14 A,H 18 07 15 54 WNA,E,SAM D5 05 16 58 H,ENA A0 14 13 30 ME,I,E D5 05 16 58 WNA,H 74 04 17 14 ME,ENA,E BC 15 13 46 SAF,ME,I 74 04 17 14 WNA,ME,E 34 30 17 30 H,EA,ENA BC 25 14 18 SAF,ME,I 34 30 17 30 WNA,H,EA 34 06 17 46 H,EA AC 22 14 50 I,A 35 06 18 18 WNA,H,EA 35 06 18 18 H,EA,ENA 34 05 15 6 WNA,H 74 24 18 50 WNA,ME,E,SAM 74 24 18 50 ME,ENA,E,SAM 35 05 15 22 WNA,H,ENA 75 24 19 6 WNA,ME,E,SAM 75 24 19 6 ME,ENA,E,SAM D4 05 15 38 WNA,H,ENA 18 17 20 10 WNA,E,SAM 18 17 20 10 ENA,E,SAM 3C 06 16 10 A,H 19 17 20 26 WNA,E,SAM 19 17 20 26 ENA,E,SAM 34 30 17 30 WNA,H,ENA 1A 17 20 42 WNA,E,SAM 1A 17 20 42 ENA,E,SAM 34 06 17 46 WNA,H D4 06 21 14 WNA,H,SAM D4 06 21 14 H,ENA,SAM 35 06 18 18 WNA,H,ENA D5 06 21 30 WNA,H,SAM D5 06 21 30 H,ENA,SAM AD 03 19 6 I,A 74 29 21 46 WNA,ME,E 74 29 21 46 ME,ENA,E AE 03 19 22 I,A 34 18 22 2 WNA,H 34 18 22 2 H,ENA 3C 25 19 54 A,H D4 15 22 18 WNA,H,EA D4 15 22 18 H,EA,ENA A0 27 21 30 ME,I,E 18 09 23 54 WNA,E,SAM 18 09 23 54 ENA,E,SAM D4 15 22 18 WNA,H,ENA GPS Schedule no 42 ( 2 April 2004) *** Hawaii *** *** Australia *** *** India *** Class PRN Start Connects Class PRN Start Connects Class PRN Start Connects h m h m h m 38 11 0 46 I CC 13 0 14 SAF A0 28 0 14 ME,EA,E 34 15 1 2 WNA,ENA,SAM F9 01 0 30 A BC 07 0 30 SAF,ME,E 35 15 1 18 WNA,ENA,SAM FA 01 0 46 A 38 11 0 46 H 3C 01 1 50 A 3C 01 1 50 H A0 07 1 2 ME,EA,E 3D 01 2 6 A 3D 01 2 6 H A1 07 1 18 ME,EA,E 34 11 2 38 WNA,EA AC 28 2 54 I,EA A2 07 1 50 ME,EA,E 34 20 3 42 WNA,EA CC 10 3 10 SAF A3 07 2 6 ME,EA,E 3C 13 3 58 A,EA CD 10 3 26 SAF A4 24 2 22 SAF 35 20 4 14 WNA,EA,ENA 3C 13 3 58 H,EA AC 28 2 54 A,EA 34 01 4 46 WNA,EA CC 29 4 30 SAF BC 09 3 42 SAF,ME,E 35 01 5 2 WNA,EA,ENA CC 26 5 2 SAF BC 17 3 58 SAF,ME 3C 08 6 22 A CD 26 5 34 SAF BD 09 4 14 SAF,ME,E 3D 08 6 38 A D4 26 5 50 SAF A0 24 4 30 ME,EA,E 34 13 6 54 WNA,EA,ENA 3C 08 6 22 H BD 17 4 46 SAF,ME,E 3C 04 7 10 A,EA 3D 08 6 38 H A0 17 5 18 ME,EA,E 3D 04 7 26 A,EA AC 29 6 54 I A1 17 5 34 ME,EA,E D4 04 7 58 A 3C 04 7 10 H,EA A2 17 6 6 ME,EA,E 38 10 8 14 I 3D 04 7 26 H,EA A3 17 6 22 ME,EA,E 3C 24 8 30 A,EA CC 09 7 42 SAF D4 17 6 38 ME,EA,E 34 08 9 14 WNA,EA D4 04 7 58 H AC 29 6 54 A 35 13 10 2 WNA,ENA,SAM CC 05 8 14 SAF BC 30 7 10 SAF,ME,E 38 26 10 18 I 3C 24 8 30 H,EA BD 30 7 26 SAF,ME,E 3C 10 10 50 A,EA AC 09 10 34 I,EA A4 30 7 58 SAF 34 29 11 38 WNA,EA 3C 10 10 50 H,EA 38 10 8 14 H 35 08 11 54 WNA,ENA,SAM CC 06 11 6 SAF BC 18 8 46 SAF,ME,E 3C 05 12 26 A,EA CD 06 11 22 SAF BD 18 9 14 SAF,ME,E 3D 05 12 42 A,EA 3C 05 12 26 H,EA A0 21 10 2 ME,EA,E D4 05 12 58 A,EA 3D 05 12 42 H,EA 38 26 10 18 H D5 05 13 14 A,EA D4 05 12 58 H,EA AC 09 10 34 A,EA 34 04 14 2 WNA,ENA,SAM D5 05 13 14 H,EA A4 14 11 38 SAF 35 04 14 18 WNA,ENA,SAM A4 15 14 34 SAF,I BC 14 11 54 SAF,ME,E D4 04 14 34 WNA,ENA,SAM AC 22 14 50 I,EA A0 22 12 10 ME,EA,E 34 05 15 6 WNA,EA CC 15 15 6 SAF A0 14 13 30 ME,EA,E 35 05 15 22 WNA,EA,ENA AD 22 15 22 I BC 15 13 46 SAF,ME,EA D4 05 15 38 WNA,EA,ENA A4 16 15 54 SAF,I BC 25 14 18 SAF,ME,EA 3C 06 16 10 A,EA 3C 06 16 10 H,EA A4 15 14 34 SAF,A 38 14 16 26 I CC 03 16 42 SAF AC 22 14 50 A,EA D5 05 16 58 WNA,ENA CC 31 17 46 SAF AD 22 15 22 A 34 30 17 30 WNA,EA,ENA CD 31 18 18 SAF BC 11 15 38 SAF,ME,E 34 06 17 46 WNA,EA AC 03 18 34 I A4 16 15 54 SAF,A 35 06 18 18 WNA,EA,ENA AD 03 19 6 I,EA 38 14 16 26 H 3C 25 19 54 A,EA AE 03 19 22 I,EA BC 20 18 2 SAF,ME,E D4 06 21 14 WNA,ENA,SAM AC 31 19 38 I AC 03 18 34 A D5 06 21 30 WNA,ENA,SAM 3C 25 19 54 H,EA AD 03 19 6 A,EA 34 18 22 2 WNA,ENA CC 20 20 58 SAF AE 03 19 22 A,EA D4 15 22 18 WNA,EA,ENA CD 20 21 30 SAF AC 31 19 38 A 3C 16 22 50 A 3C 16 22 50 H A0 27 21 30 ME,EA,E 38 31 23 6 I CD 13 23 22 SAF 38 31 23 6 H GPS Schedule no 42 ( 2 April 2004) *** 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 28 0 14 I,EA,E CC 13 0 14 A 18 21 0 14 WNA,ENA BC 07 0 30 SAF,I,E BC 07 0 30 ME,I,E F8 05 0 30 SAM A0 07 1 2 I,EA,E CA 06 2 6 SAM FB 05 0 46 SAM A1 07 1 18 I,EA,E A4 24 2 22 I 34 15 1 2 WNA,H,ENA A2 07 1 50 I,EA,E CC 10 3 10 A 35 15 1 18 WNA,H,ENA A3 07 2 6 I,EA,E CD 10 3 26 A 68 18 1 34 ENA BC 09 3 42 SAF,I,E BC 09 3 42 ME,I,E F8 18 1 50 SAM BC 17 3 58 SAF,I BC 17 3 58 ME,I CA 06 2 6 SAF BD 09 4 14 SAF,I,E BD 09 4 14 ME,I,E 68 22 2 22 ENA A0 24 4 30 I,EA,E CC 29 4 30 A 69 22 2 38 ENA BD 17 4 46 SAF,I,E BD 17 4 46 ME,I,E 6A 22 2 54 ENA A0 17 5 18 I,EA,E CC 26 5 2 A 6B 22 3 10 ENA A1 17 5 34 I,EA,E CD 26 5 34 A FB 18 3 26 SAM 74 25 5 50 WNA,ENA,E,SAM D4 26 5 50 A FC 18 3 42 SAM A2 17 6 6 I,EA,E CA 15 6 22 SAM 18 14 3 58 WNA,ENA,E A3 17 6 22 I,EA,E BC 30 7 10 ME,I,E F8 16 4 14 SAM D4 17 6 38 I,EA,E BD 30 7 26 ME,I,E 68 14 4 30 ENA BC 30 7 10 SAF,I,E CC 09 7 42 A 74 25 5 50 WNA,ME,ENA,E BD 30 7 26 SAF,I,E A4 30 7 58 I CA 15 6 22 SAF 74 16 7 42 WNA,ENA,E CC 05 8 14 A 68 03 7 10 ENA 75 16 7 58 WNA,ENA,E BC 18 8 46 ME,I,E 18 03 8 14 WNA,ENA,E BC 18 8 46 SAF,I,E BD 18 9 14 ME,I,E 19 03 8 30 WNA,ENA,E BD 18 9 14 SAF,I,E CA 25 9 30 SAM CA 25 9 30 SAF 74 03 9 30 WNA,ENA,E BC 16 10 18 ME,E,SAM 18 31 9 46 WNA,ENA,E A0 21 10 2 I,EA,E BD 16 10 50 ME,SAM 35 13 10 2 WNA,H,ENA BC 16 10 18 SAF,E,SAM CC 06 11 6 A BC 16 10 18 SAF,ME,E BD 16 10 50 SAF,SAM CD 06 11 22 A BD 16 10 50 SAF,ME 74 31 11 6 WNA,ENA,E A4 14 11 38 I 35 08 11 54 WNA,H,ENA BC 14 11 54 SAF,I,E BC 14 11 54 ME,I,E 18 11 12 26 WNA,ENA,E A0 22 12 10 I,EA,E BC 15 13 46 ME,I,EA 74 11 12 42 WNA,ME,ENA,E 74 11 12 42 WNA,ENA,E,SAM BC 25 14 18 ME,I,EA 34 04 14 2 WNA,H,ENA 75 11 12 58 WNA,ENA,E A4 15 14 34 I,A 35 04 14 18 WNA,H,ENA A0 14 13 30 I,EA,E BC 01 14 50 ME,SAM D4 04 14 34 WNA,H,ENA BC 15 13 46 SAF,I,EA CC 15 15 6 A BC 01 14 50 SAF,ME BC 25 14 18 SAF,I,EA BD 01 15 22 ME,SAM BD 01 15 22 SAF,ME BC 01 14 50 SAF,SAM BC 11 15 38 ME,I,E 18 07 15 54 WNA,ENA,E BD 01 15 22 SAF,SAM A4 16 15 54 I,A BC 13 16 10 SAF,ME BC 11 15 38 SAF,I,E BC 13 16 10 ME,SAM 74 24 18 50 WNA,ME,ENA,E BC 13 16 10 SAF,SAM CC 03 16 42 A 75 24 19 6 WNA,ME,ENA,E 74 04 17 14 WNA,ENA,E CC 31 17 46 A BC 04 19 22 SAF,ME BC 20 18 2 SAF,I,E BC 20 18 2 ME,I,E BD 04 19 38 SAF,ME 74 24 18 50 WNA,ENA,E,SAM CD 31 18 18 A 18 17 20 10 WNA,ENA,E 75 24 19 6 WNA,ENA,E,SAM BC 04 19 22 ME,SAM 19 17 20 26 WNA,ENA,E BC 04 19 22 SAF,SAM BD 04 19 38 ME,SAM 1A 17 20 42 WNA,ENA,E BD 04 19 38 SAF,SAM CC 20 20 58 A D4 06 21 14 WNA,H,ENA A0 27 21 30 I,EA,E CD 20 21 30 A D5 06 21 30 WNA,H,ENA 74 29 21 46 WNA,ENA,E BC 10 22 18 ME,SAM BC 10 22 18 SAF,ME BC 10 22 18 SAF,SAM CD 13 23 22 A 18 09 23 54 WNA,ENA,E