NOTES FOR: rd0306 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== Parameter values for experiment RD0306 Experiment description: NEOSA Scheduler: NASA Correlator: HAYSTACK Nominal start: 2003-197-18:00:00 Nominal end: 2003-198-18:00:00 Current yyyyddd: 2003197 (2003.54) ( 12837 MJD, WED. 16JUL.) Greenwich sidereal time: 13:36:39.14 (18: 0: 0 UT) Sun's RA and DEC: 7h 42.7m 21d 20.5 =========================================================== First observations Observation listing from file ./rd0306.skd for experiment RD0306 Source Start DURATIONS name yyddd-hhmmss Ap Gc Kk Ny Tc Wf Wz 0727-115 03197-180000| 98 98 98 98 | 1357+769 03197-180000| 98 98 98| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Ap Gc Kk Ny Tc Wf Wz 0454-234 03198-172938| 98 98 98 98 | 1522+155 03198-173023| 392 392| 2149+056 03198-173301| 98 98 | 1739+522 03198-173918| 98 98 98 98 98| 0552+398 03198-174247| 98 98 98 98 98| 0133+476 03198-174535| 98 98 98 98 98 98| =========================================================== 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 ./rd0306.skd for experiment RD0306 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 3.4 Min = .0 Max = 65.0 (Baseline Ny-Wz on CTA26 ) RMS = 5.4 Total time: 1427 minutes ( 23.8 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: 21 34 40 40 31 35 38 34 % cal. time: 2 2 2 2 1 2 2 2 % slew time: 59 20 14 15 4 11 9 19 % idle time: 16 42 43 41 62 50 49 43 # of tapes : 1.1 1.9 2.3 2.2 1.8 2.0 2.1 total # scans: 181 240 214 230 110 213 215 200 # scans/hour : 7 10 8 9 4 8 9 8.4 Avg scan (sec): 101 123 160 150 245 142 152 153 tape change times (hhmm): 1506 0744 0458 0401 0435 0611 0447 0000 0000 1522 1540 0000 0000 1718 # OF OBSERVATIONS BY BASELINE | Ap Gc Kk Ny Tc Wf Wz StnTotal ------------------------------------------ Ap|181 135 102 121 56 170 108 692 Gc| 240 181 169 39 145 125 794 Kk| 214 114 66 118 75 656 Ny| 230 25 142 186 757 Tc| 110 73 44 303 Wf| 213 138 786 Wz| 215 676 Number of 2-station scans: 123 Number of 3-station scans: 64 Number of 4-station scans: 63 Number of 5-station scans: 70 Number of 6-station scans: 50 Number of 7-station scans: 9 Total # of scans, observations: 379 2332 =========================================================== 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 15 15 15 15 Tc 12 12 12 12 Wf 20 20 20 20 15 Wf 15 15 15 15 12 Wz 20 20 20 20 15 20 Wz 15 15 15 15 12 15