NOTES FOR: rd0301 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== Parameter values for experiment RD0301 Experiment description: R&D Scheduler: tbd Correlator: HAYSTACK Nominal start: 2003-015-18:00:00 Nominal end: 2003-016-18:00:00 Current yyyyddd: 2003015 (2003.04) ( 12655 MJD, WED. 15JAN.) Greenwich sidereal time: 1:39: 6.07 (18: 0: 0 UT) Sun's RA and DEC: 19h 48.5m -21d 6.0 =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Ap Gc Kk Ny Tc Wf Wz 1606+106 03015-180000| 40 150 66 150 114 | 0014+813 03015-180000| 44 44| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Ap Gc Kk Ny Tc Wf Wz 0119+115 03016-172911| 40 51 51 40| 0059+581 03016-173805| 40 40 40 40| 3C274 03016-174031| 40 40 | 3C446 03016-174350| 40 79 79 72| 0552+398 03016-174617| 40 40| 1726+455 03016-175047| 40 40 65 52 65| =========================================================== Purpose of Experiment The goal of the 10 R&D sessions in 2003 as decided by the IVS Program Committee is to compare the results of the IVS-R1 and the IVS-R4 sessions. The IVS-R4 sessions seem to be achieving better earth orientation results with a lower data rate (56 vs. 256). The R&D sessions are being scheduled to aide the analysts in understanding the 2002 results of the IVS-R1 and IVS-R4 sessions by scheduling sessions with a simular IVS-R4 network using the IVS-R1 observing mode. Type of Experiment This experiment uses a 7-station northern hemisphere geodetic network. The R&D sessions are scheduled monthly, adjacent to the IVS-R4 sessions with the same stations except one. Westford will participate in the R&D and the IVS-R4 sessions will have Fortaleza. Fortaleza can not participate in the R&D session because those sessions will be scheduled with the Mark IV mode. Fortaleza has not been upgraded to Mark IV or higher as yet. C. Thomas took the IVS-R4 schedule, prepared by M. Carter, and replaced Fortaleza with Westford and replaced the GEOSXR4 (112 data rate) with the GEOSX4F (256 data rate) recording mode. The R&D schedule was made with the new stations and recording mode. =========================================================== SKED Summary from file ./rd0301.skd for experiment RD0301 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 5.3 Min = .0 Max = 105.4 (Baseline Ny-Wz on 1741-038) RMS = 7.7 Total time: 1431 minutes ( 23.9 hours). Key: Ap=ALGOPARK Gc=GILCREEK Kk=KOKEE Ny=NYALES20 Tc=TIGO Wf=WESTFORD Wz=WETTZELL Ap Gc Kk Ny Tc Wf Wz Avg % obs. time: 11 24 30 30 23 33 30 26 % cal. time: 2 3 2 3 1 2 2 2 % slew time: 64 21 14 19 3 13 10 21 % idle time: 20 50 52 47 72 50 55 49 # of tapes : .7 1.4 1.7 2.0 1.3 1.9 1.7 total # scans: 229 273 225 265 86 248 242 224 # scans/hour : 9 11 9 11 3 10 10 9.3 Avg scan (sec): 44 78 115 99 233 115 107 113 tape change times (hhmm): 0000 1037 0836 0744 1419 0744 0900 # OF OBSERVATIONS BY BASELINE | Ap Gc Kk Ny Tc Wf Wz StnTotal ------------------------------------------ Ap|229 173 137 161 60 220 143 894 Gc| 273 200 200 37 174 153 937 Kk| 225 133 51 140 88 749 Ny| 265 34 175 215 918 Tc| 86 69 41 292 Wf| 248 166 944 Wz| 242 806 Number of 2-station scans: 112 Number of 3-station scans: 63 Number of 4-station scans: 72 Number of 5-station scans: 69 Number of 6-station scans: 73 Number of 7-station scans: 12 Total # of scans, observations: 401 2770 =========================================================== Recording mode Name Code GEOSX4F 4F Recording mode setup for: ALGOPARK Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: GILCREEK Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 256.000 Mbits 128.000 MHz 14 1 8:1 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: KOKEE Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 256.000 Mbits 128.000 MHz 14 1 16:1 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: NYALES20 TIGOCONC WESTFORD WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 16 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 =========================================================== Tape types ID Station Tape length Density Ap ALGOPARK 17400feet (Thin ) 56250. (High) Gc GILCREEK 17400feet (Thin ) 56700. (High) Kk KOKEE 17400feet (Thin ) 56700. (High) Ny NYALES20 17400feet (Thin ) 56250. (High) Tc TIGOCONC 17400feet (Thin ) 56250. (High) Wf WESTFORD 17400feet (Thin ) 56250. (High) Wz WETTZELL 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 3) Ap Gc Kk Ny Tc Wf Ap Gc Kk Ny Tc Wf Gc 20 Gc 15 Kk 20 20 Kk 15 15 Ny 20 20 20 Ny 15 15 15 Tc 20 20 20 20 Tc 15 15 15 15 Wf 20 20 20 20 20 Wf 15 15 15 15 15 Wz 20 20 20 20 20 20 Wz 15 15 15 15 15 15