(International VLBI Service - Terrestical Reference Frame Observations) Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== Parameter values for experiment T2028 Experiment description: IVS-R1 Scheduler: NASA Correlator: WACO Nominal start: 2004-104-17:30:00 Nominal end: 2004-105-17:30:00 Current SNR parameter values: VSCAN Y (compute scan lengths) MINSCAN 40sec (min. scan length) MODSCAN 1sec (modular unit of scan) MAXSCAN 200 (max scan length) CORSYNCH 0 (corr. tape sync time) MINSUBNET 2 (min. subnet size) Current Procedure parameter values: PREOB PREOB (pre-obs. procedure) MIDOB MIDOB (mid-obs. procedure) POSTOB POSTOB (post-obs. procedure) PREPASS 600sec (accomm. tape pass) CHANGE 420sec (tape change time) SOURCE 5sec (SOURCE command time) SETUP 20sec (MkIII setup procedure) MIDTP 10sec (MIDTP procedure time) CALIBRATION 10sec (time before obs.) DURATION 196sec (default scan time) HEAD 6sec (HEAD command time) PARITY 100sec (parity check procedure) TAPETM 1sec (TAPE command time) IDLE 0sec (idle time after obs.) Current General parameter values: SUBNET Ap15FtGcHoKbKkNtNyGgShTcTsUrWfWz PRFLAG YYNN (required procedures) POSTPASS N (postpass thin tapes) MODULAR 1sec (start time mark) MINIMUM 0sec (time between obs.) LOOKAHEAD 20min (for WHATSUP) SYNCHRONIZE OFF (tape synchronization) SNR Y (reject for low SNR) WIDTH 79columns (width of screen) VIS SUB (subnet source visibility) CONFIRM Y (ask before adding obs) FILLIN Y (schedule obs in idle time) DEBUG N (display debugging info) All_Bl_Good N (All Bls on a scan good) FREQUENCY SX (default freq. code) SUNDIS 15deg (min. distance from sun) Schedule file: ./t2028.skd Process ID: 09674 sked version: 2004Apr02 Printer commands: lj, ljp Current yyyyddd: 2004104 (2004.28)( 13109 MJD, TUES 13APR.) Greenwich sidereal time: 6:58:57.00 (17:30: 0 UT) Sun's RA and DEC: 1h 29.3m 9d 21.3 =========================================================== The purpose of the remaining T2 sessions has been changed by the IVS OPC (Observing Program Committee). The new plan uses larger networks for each T2 session, say 16 to 20 stations, but have fewer T2 sessions during the year. The larger network should provide a stronger solution and better TRF results, even if there are fewer sessions each year. It is possible to use a larger than normal observing network now because we have excess correlator capacity. The use of Mark 5 systems has resulted in greater efficiency at the correlators and therefore more processing time is available. The large T2 network sessions will be processed in several correlator passes. This is the first 16 station T2 session. We will work out a transition to the new T2 plan, after we see how well the correlation of this session goes. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf Wz 1958-179 04104-173000| 83 190 190 190 190 179 | 3C454.3 04104-173000| 40 40 40 | OJ287 04104-173000| 102 110 85 110| 0552+398 04104-173000| 154 154 58 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf Wz NRAO150 04105-170512| 40 190 190 | 1044+719 04105-170517| 190 190 190 190 190 190 190 190 190 190| 0537-441 04105-170614| 190 190 | 1958-179 04105-171033| 190 190 190 | 0602+673 04105-171050| 103 190 190 190 190 190 190 190 190 190| 0607-157 04105-171254| 77 77 | 0727-115 04105-171528| 190 188 190 190| 0528+134 04105-171558| 120 120 | 1726+455 04105-171623| 57 113 88 113 69 | 0823+033 04105-171933| 100 100 83| 0656+082 04105-172013| 107 107 | 0454-234 04105-172021| 151 151 | =========================================================== SKED Summary from file ./t2028.skd for experiment T2028 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 4.2 Min = .0 Max = 102.9 (Baseline Sh-Tc on 0727-115) RMS = 6.6 Total time: 1433 minutes ( 23.9 hours). Key: Ap=ALGOPARK 15=DSS15 Ft=FORTLEZA Gc=GILCREEK Ho=HOBART26 Kb=KASHIM34 Kk=KOKEE Nt=NOTO Ny=NYALES20 Gg=ORION_5M Sh=SESHAN25 Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wf=WESTFORD Wz=WETTZELL Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf Wz Avg % obs. time: 21 30 35 38 22 30 39 37 39 23 35 28 29 36 43 39 33 % cal. time: 2 2 2 2 2 3 3 3 3 1 2 1 3 2 2 3 2 % slew time: 62 33 33 17 31 30 14 33 17 4 43 4 12 25 11 9 24 % idle time: 13 33 29 40 43 35 42 25 40 69 18 65 54 34 43 47 39 total # scans: 230 247 193 256 174 292 258 275 258 128 245 135 296 256 230 278 234 # scans/hour : 9 10 8 10 7 12 10 11 10 5 10 5 12 10 9 11 9.8 Avg scan (sec): 79 104 156 129 111 89 130 116 130 160 123 179 84 123 161 122 124 Total GBytes: 161 223 253 281 166 229 285 272 286 171 257 201 220 269 309 290 243 Total GB(M5): 164 227 257 285 169 232 289 277 290 174 261 204 223 274 314 295 246 # of tapes : .4 .5 2.0 .6 .4 1.7 .6 .6 .6 .4 .5 .4 .5 .6 .7 .6 tape change times (hhmm): 0000 0000 0546 0000 0000 0750 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 11.0 Total GBytes (M5) recorded: 3944.0 # OF OBSERVATIONS BY BASELINE | Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf Wz StnTotal ------------------------------------------------------------------------------ Ap|230 138 74 99 8 59 87 62 91 90 41 49 65 46 156 74 1139 15| 247 54 143 35 90 155 44 93 56 60 63 92 57 112 61 1253 Ft| 193 25 1 5 28 81 29 27 6 85 8 22 83 68 596 Gc| 256 26 138 146 79 163 28 100 15 154 103 90 100 1409 Ho| 174 80 84 12 12 3 74 29 74 50 9 9 506 Kb| 292 136 77 125 6 186 8 269 150 50 94 1473 Kk| 258 38 89 29 88 40 131 70 79 55 1255 Nt| 275 129 17 76 16 78 110 82 238 1139 Ny| 258 16 105 6 134 142 92 157 1383 Gg| 128 6 21 8 8 80 18 413 Sh| 245 1 181 180 43 80 1227 Tc| 135 10 0 49 15 407 Ts| 296 145 54 100 1503 Ur| 256 54 120 1257 Wf| 230 88 1121 Wz| 278 1277 Number of 2-station scans: 394 Number of 3-station scans: 144 Number of 4-station scans: 132 Number of 5-station scans: 52 Number of 6-station scans: 63 Number of 7-station scans: 36 Number of 8-station scans: 37 Number of 9-station scans: 21 Number of 10-station scans: 33 Number of 11-station scans: 15 Number of 12-station scans: 10 Number of 13-station scans: 1 Number of 14-station scans: 0 Number of 15-station scans: 0 Number of 16-station scans: 0 Total # of scans, observations: 938 8679 =========================================================== Op list Optimization parameters for experiment T2028 from schedule file ./t2028.skd CvgOnly Last 1h Max#Obs MinTime Best70% LatLonH Equ Wts ZP Add30ps LoEl 0d MinSlew Betw20m =========================================================== Recording mode Name Code EUR-SX SX Recording mode setup for: ALGOPARK DSS15 GILCREEK HOBART26 KOKEE NOTO NYALES20 GGAO7108 SESHAN25 TIGOCONC TSUKUB32 URUMQI WESTFORD WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: FORTLEZA KASHIM34 Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.0 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Tape types ID Station Tape length Speed ID Station Tape length Speed Ap ALGOPARK 17400feet (Thin ) 56250. (High) 12 15 DSS15 17400feet (Thin ) 56250. (High) 12 Ft FORTLEZA 8700feet (Thick ) 33333. (Low ) 12 Gc GILCREEK 17400feet (Thin ) 56250. (High) 12 Ho HOBART26 17400feet (Thin ) 56250. (High) 12 Kb KASHIM34 8700feet (Thick ) 33333. (Low ) 12 Kk KOKEE 17400feet (Thin ) 56250. (High) 12 Nt NOTO 17400feet (Thin ) 56250. (High) 12 Ny NYALES20 17400feet (Thin ) 56250. (High) 12 Gg GGAO7108 17400feet (Thin ) 56250. (High) 12 Sh SESHAN25 17400feet (Thin ) 56250. (High) 12 Tc TIGOCONC 17400feet (Thin ) 56250. (High) 12 Ts TSUKUB32 17400feet (Thin ) 56250. (High) 12 Ur URUMQI 17400feet (Thin ) 56250. (High) 12 Wf WESTFORD 17400feet (Thin ) 56250. (High) 12 Wz WETTZELL 17400feet (Thin ) 56250. (High) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf Ap 15 Ft Gc Ho Kb Kk Nt Ny Gg Sh Tc Ts Ur Wf 15 20 15 15 Ft 20 20 Ft 15 15 Gc 20 20 20 Gc 15 15 15 Ho 20 20 20 20 Ho 15 15 15 15 Kb 20 20 20 20 20 Kb 15 15 15 15 15 Kk 20 20 20 20 20 20 Kk 15 15 15 15 15 15 Nt 20 20 20 20 20 20 20 Nt 15 15 15 15 15 15 15 Ny 20 20 20 20 20 20 20 20 Ny 15 15 15 15 15 15 15 15 Gg 15 15 15 15 15 15 15 15 15 Gg 12 12 12 12 12 12 12 12 12 Sh 20 20 20 20 20 20 20 20 20 15 Sh 15 15 15 15 15 15 15 15 15 12 Tc 15 15 15 15 15 15 15 15 15 15 15 Tc 12 12 12 12 12 12 12 12 12 12 12 Ts 20 20 20 20 20 20 20 20 20 15 20 15 Ts 15 15 15 15 15 15 15 15 15 12 15 12 Ur 20 20 20 20 20 20 20 20 20 15 20 15 20 Ur 15 15 15 15 15 15 15 15 15 12 15 12 15 Wf 20 20 20 20 20 20 20 20 20 15 20 15 20 20 Wf 15 15 15 15 15 15 15 15 15 12 15 12 15 15 Wz 20 20 20 20 20 20 20 20 20 15 20 15 20 20 20 Wz 15 15 15 15 15 15 15 15 15 12 15 12 15 15 15