Session Notes for APSG (Asian Pacific Space Geodynamics) session: apsg17 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== The primary purpose of this Asian Pacific Space Geodynamics (APSG) session is to continue monitoring the relative motions of the plates in the Asia-Pacific region. This session involves seven sites on the four plates. Fairbanks is on the North American Plate, Hobart and Parkes are on the Australian Plate, Seshan, Urumqi, and Tsukuba are on the Eurasian Plate, and Kokee is on the Pacific Plate. Thus, this session will produce critical data for the investigation of the current crustal motions in the Asia-Pacific region combined with the data from the APSG SLR and GPS campaigns. Also, this experiment will improve the accuracy of the geocentric coordinates of the participating stations, especially Urumqi. =========================================================== Parameter values for experiment APSG17 Experiment description: APSG Scheduler: NASA Correlator: Please see master schedule Nominal start: 2005-340-17:30:00 Nominal end: 2005-341-17:30:00 Current yyyyddd: 2005340 (2005.93) ( 13711 MJD, TUES 6DEC.) Greenwich sidereal time: 22:32:23.00 (17:30: 0 UT) Sun's RA and DEC: 16h 53.6m -22d 33.6 =========================================================== Important Information Parkes is recording on tape in Mode C, double speed. Seshan is recording 8 channels fanned out to 16 tracks. All other stations ( except Parkes) record 16 channels fanned out to 32 tracks. =========================================================== There are no observations for Kokee from 18:15 U.T. to 19:45 U.T. Kokee will participate in the intensive session during this period. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gc Ho Kk Pa Sh Ts Ur OJ287 05340-173000| 167 167 123 70 130 70 130| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gc Ho Kk Pa Sh Ts Ur 0454-234 05341-171248| 70 70 70| 4C39.25 05341-171618| 70 70 70 70 70| OK290 05341-171817| 306 70 306| 0743+259 05341-172030| 143 143 92 70 | =========================================================== SKED Summary from file ./apsg17.skd for experiment APSG17 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 10.4 Min = .0 Max = 40.2 (Baseline Kk-Sh on 0454-234) RMS = 9.6 Total time: 1433 minutes ( 23.9 hours). Key: Gc=GILCREEK Ho=HOBART26 Kk=KOKEE Pa=PARKES64 Sh=SESHAN25 Ts=TSUKUB32 Ur=URUMQI Gc Ho Kk Pa Sh Ts Ur Avg % obs. time: 45 33 45 22 49 33 44 39 % cal. time: 4 3 4 3 3 4 3 4 % slew time: 20 41 16 54 28 18 25 29 % idle time: 29 22 35 20 18 44 26 28 total # scans: 332 290 325 262 294 377 274 307 # scans/hour : 13.9 12.1 13.6 11.0 12.3 15.8 11.5 12.9 Avg scan (sec): 118 97 119 72 145 74 139 108 Total GBytes: 762 556 753 337 409 572 737 589 Total GB(M5): 677 495 669 342 364 508 655 530 # of tapes : 1.4 .9 1.2 2.8 1.3 .9 1.2 tape change times (hhmm): 1059 0000 1355 0226 1233 0000 1410 0000 0000 0000 1054 0000 0000 0000 Total number of tapes: 9.7 Total GBytes (M5) recorded: 3710.7 # OF OBSERVATIONS BY BASELINE | Gc Ho Kk Pa Sh Ts Ur StnTotal ------------------------------------------ Gc|332 62 269 32 176 234 182 955 Ho| 290 100 234 113 152 73 734 Kk| 325 72 175 238 143 997 Pa| 262 85 123 56 602 Sh| 294 261 228 1038 Ts| 377 220 1228 Ur| 274 902 Number of 2-station scans: 265 Number of 3-station scans: 113 Number of 4-station scans: 82 Number of 5-station scans: 128 Number of 6-station scans: 33 Number of 7-station scans: 17 Total # of scans, observations: 638 3228 =========================================================== Recording mode Name Code CDP-SX SX Recording mode setup for: GILCREEK Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 128.000 Mbits 64.000 MHz 14 1 8:1 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 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= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: HOBART26 TSUKUB32 Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 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= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: KOKEE URUMQI Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 16 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 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= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: PARKES Mode Tot.Rate Tot.BandW #chan #bits Barrel C 112.000 Mbits 56.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 2 14(*0) 28 270.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 85.0 MHz rms spanned bw= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: SESHAN25 Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 64.000 Mbits 32.000 MHz 8 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 4(*2) 8 80.00 X-band spanned bw= 330.0 MHz rms spanned bw= 129.7 MHz S-band spanned bw= 75.0 MHz rms spanned bw= 29.8 MHz Effective number of channels recorded per sub-pass X S Total 4.000 4.000 8.000 =========================================================== Minor Options Option Norm Wt Aux_Parm BegScan Rel 1.00 EndScan Rel 1.00 NumObs Rel 1.00 =========================================================== Major Options SkyCov Yes Min_Between 30 Best% 50.0 Last_Hrs 2.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Gc GILCREEK 17400feet (Thin ) 56700 (HIGH ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 14 Kk KOKEE 17400feet (Thin ) 56250 (HIGH ) 14 Pa PARKES 8700feet (Thick ) 33333 (Low ) 12 Sh SESHAN25 17400feet (Thin ) 56250 (HIGH ) 14 Ts TSUKUB32 17400feet (Thin ) 56250 (HIGH ) 14 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 14 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Gc Ho Kk Pa Sh Ts Gc Ho Kk Pa Sh Ts Ho 20 Ho 15 Kk 20 20 Kk 15 15 Pa 20 20 20 Pa 15 15 15 Sh 20 20 20 20 Sh 15 15 15 15 Ts 20 20 20 20 20 Ts 15 15 15 15 15 Ur 20 20 20 20 20 20 Ur 15 15 15 15 15 15