APSG-10 (Asian Pacific Space Geodynamics-10) 2002 October 8 Notes prepared by Dr. Guangli Wang, SHA/CAS Cynthia Thomas, NVI/GSFC Parameter values for experiment APSG10 Experiment description: APSG-10 Scheduler: SHA Correlator: WACO Nominal start: 2002-281-17:30:00 Nominal end: 2002-282-17:30:00 Current yyyyddd: 2002281 (2002.77) ( 12556 MJD, TUES 8OCT.) Greenwich sidereal time: 18:38:42.16 (17:30: 0 UT) Sun's RA and DEC: 12h 56.2m -6d .6 =========================================================== First observations Observation listing from file ../schedules/apsg10.skd for experiment APSG10 Source Start DURATIONS name yyddd-hhmmss Gc Ho Kk Sh Ts Ur 0235+164 02281-173000| 99 127 138 152 70 152| 1128+385 02281-173411| 70 70 70 | 0727-115 02281-173715| 70 70 70 70 70 | 0552+398 02281-174106| 70 91 70 70 91| 1357+769 02281-174439| 108 134 187 70 187| End of listing. =========================================================== Last observations Observation listing from file ../schedules/apsg10.skd for experiment APSG10 Source Start DURATIONS name yyddd-hhmmss Gc Ho Kk Sh Ts Ur 0552+398 02282-171308| 70 80 70 70 80| 0823+033 02282-171633| 127 127 70 | 0119+115 02282-171919| 70 70| 0454-234 02282-171940| 70 70 | 2121+053 02282-172218| 70 70| 0402-362 02282-172218| 117 117 | End of listing. =========================================================== SKED Summary from file ../schedules/apsg10.skd for experiment APSG10 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 4.6 Min = .0 Max = 30.8 (Baseline Gc-Kk on 0003-066) RMS = 6.2 Total time: 1434 minutes ( 23.9 hours). Key: Gc=GILCREEK Ho=HOBART26 Kk=KOKEE Sh=SESHAN25 Ts=TSUKUB32 Ur=URUMQI Gc Ho Kk Sh Ts Ur Avg % obs. time: 42 28 49 37 33 40 38 % cal. time: 3 1 3 2 4 2 3 % slew time: 21 30 18 42 16 23 25 % idle time: 33 39 27 17 46 33 32 total # scans: 303 163 343 228 349 223 268 # scans/hour : 12 6 14 9 14 9 11.2 Avg scan (sec): 120 149 124 143 81 155 128 Total GBytes: 310 204 364 274 252 290 282 # of 8-packs: .3 .2 .4 .3 .3 .3 # of tapes : .7 1.6 .8 .6 .5 .6 tape change times (hhmm): 0000 0859 0000 0000 0000 0000 Total number of tapes: 4.8 Total GBytes recorded: 1696.8 # OF OBSERVATIONS BY BASELINE | Gc Ho Kk Sh Ts Ur StnTotal -------------------------------------- Gc|303 36 247 126 220 127 756 Ho| 163 105 94 104 68 407 Kk| 343 124 235 95 806 Sh| 228 199 177 720 Ts| 349 179 937 Ur| 223 646 Number of 2-station scans: 205 Number of 3-station scans: 126 Number of 4-station scans: 73 Number of 5-station scans: 83 Number of 6-station scans: 19 Total # of scans, observations: 506 2136 =========================================================== Recording mode Name Code CDP-SX SX Recording mode setup for: GILCREEK KOKEE SESHAN25 TSUKUB32 URUMQI 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= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 Recording mode setup for: HOBART26 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= 33.1 MHz Effective number of channels recorded per sub-pass X S Total 8.000 6.000 14.000 =========================================================== Tape types ID Station Tape length Density Passes Gc GILCREEK 17400feet (Thin ) 56250. (High) 12 Ho HOBART26 8700feet (Thick) 33333. (Low ) 12 Kk KOKEE 17400feet (Thin ) 56250. (High) 12 Sh SESHAN25 17400feet (Thin ) 56250. (High) 12 Ts TSUKUB32 17400feet (Thin ) 56250. (High) 12 Ur URUMQI 17400feet (Thin ) 56250. (High) 12 =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Gc Ho Kk Sh Ts Gc Ho Kk Sh Ts Ho 20 Ho 15 Kk 20 20 Kk 15 15 Sh 20 20 20 Sh 15 15 15 Ts 20 20 20 20 Ts 15 15 15 15 Ur 20 20 20 20 20 Ur 15 15 15 15 15 Purpose ======= 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 five sites on the four plates. Fairbanks is on the North American Plate, Hobart is on the Australian Plate, Seshan and Urumqi 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. Schedule ======== This is a new schedule generated by Dr. G. Wang with the automatic mode of sked. The following are the characteristics of the schedule: 1) This schedule was optimized for sky coverage. 2) Only the observations in the previous two hours of the schedule were considered for the minor options. The best 50% of the configurations were considered for minor options. 3) The "minor options" were set to select observations to maximize the total number of observations, to minimize the idle time between scans, and to minimize time between scans on the same source by thirty minutes. 5) The minimum SNR limits for all baselines were set to 20 for X-band and 15 for S-band. The schedule was made using the network selection mode of sked. The schedule was re-made by N. Vandenberg after re-selecting the newest flux catalog (updated Sept 27). Early start was set to 10 sec. Correlation ========== This experiment will be correlated at the Washington Correlator with all baselines being correlated.