Session Notes for APSG (Asian Pacific Space Geodynamics) session: apsg20 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 six sites on the three plates. 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 APSG20 Experiment description: APSG Scheduler: NASA Correlator: Please see the master schedule Nominal start: 2007-254-17:30:00 Nominal end: 2007-255-17:30:00 Current yyyyddd: 2007254 (2007.70) ( 14355 MJD, TUES 11SEP.) Greenwich sidereal time: 16:51:25.00 (17:30: 0 UT) Sun's RA and DEC: 11h 18.1m 4d 30.5 =========================================================== Important Station Information Parkes will record on tape for the last time. =========================================================== 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 Ho Kk Pa Sh Ts Ur 0235+164 07254-173000| 70 70 70 70 70 70| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Ho Kk Pa Sh Ts Ur 0537-441 07255-172326| 70 70 70 | 1357+769 07255-172631| 70 70 70 70| =========================================================== SKED Summary from file ./apsg20.skd for experiment APSG20 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 14.0 Min = .0 Max = 44.1 (Baseline Kk-Ur on 1741-038) RMS = 13.8 Total time: 1438 minutes ( 24.0 hours). Key: Ho=HOBART26 Kk=KOKEE Pa=PARKES64 Sh=SESHAN25 Ts=TSUKUB32 Ur=URUMQI Ho Kk Pa Sh Ts Ur Avg % obs. time: 31 30 25 38 37 32 32 % cal. time: 4 4 4 5 5 4 4 % slew time: 40 18 57 37 19 32 34 % idle time: 25 47 14 19 38 31 29 total # scans: 358 343 302 436 451 362 375 # scans/hour : 15 14 13 18 19 15 16 Avg scan (sec): 74 76 70 74 70 77 73 # data tracks: 14 14 14 14 14 14 # Mk5 tracks: 16 16 16 16 16 16 Total GBytes: 473 465 381 580 568 494 494 Total GB(M5): 480 473 387 589 577 502 501 # of tapes : .0 .0 3.2 .1 .0 .0 tape change times (hhmm): 0000 0000 0110 0000 0000 0000 0000 0000 0841 0000 0000 0000 0000 0000 1618 0000 0000 0000 Total number of tapes: 3.4 Total GBytes (M5) recorded: 3008.4 # OF OBSERVATIONS BY BASELINE | Ho Kk Pa Sh Ts Ur StnTotal ---------------------------------------- Ho| 159 279 192 197 114 941 Kk| 129 252 284 197 1021 Pa| 135 140 73 756 Sh| 416 343 1338 Ts| 332 1369 Ur| 1059 Number of 2-station scans: 194 Number of 3-station scans: 136 Number of 4-station scans: 190 Number of 5-station scans: 96 Number of 6-station scans: 36 Total # of scans, observations: 652 3242 =========================================================== Recording mode Name Code CDP-SX SX Recording mode setup for: HOBART26 KOKEE TSUKUB32 URUMQI 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 .01 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: 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 Mk341:2 112.000 Mbits 56.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 14(*2) 28 .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 =========================================================== 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 Ho HOBART26 Mark5A Kk KOKEE Mark5A Pa PARKES 8700feet (Thick ) 33333 (Low ) 12 Sh SESHAN25 Mark5A Ts TSUKUB32 Mark5A Ur URUMQI Mark5A =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) Ho Kk Pa Sh Ts Ho Kk Pa Sh Ts Kk 20 Kk 15 Pa 20 20 Pa 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