Session Notes for rd1307.skd Prepared by K. Le Bail and J. Gipson, NVI, Inc./GSFC =========================================================== PURPOSE AND GENERAL NOTES =========================================================== Observing link sources between GAIA and ICRF2. (Here: schedule as many sources as possible from the 24 sources of category 4 from the Bordeaux proposal.) The Laboratory d'Astrophysique de Bordeaux (LAB) submitted a proposal to observe 195 transfer sources between ICRF2 and the GAIA mission. These 195 sources are divided into four categories. The forth category contains 24 sources that are not part of the IVS source monitoring program and that have a poor position accuracy. The primary goal of observing them in several R&D sessions is to improve their position accuracy. In RD1307, we use the 24 sources of the category 4 of the GAIA proposal in the astro mode of sked. We have one additional source which is a candidate geodetic source. The table below lists the number of observations for each source as a percentage of the total number of of observations scheduled. (The first two columns are the observation targets. This is followed by the % actually observed, and the number of observations and scans for each source.) All of the sources were scheduled in this session. Astrometric Sources Source Min% Max% Actual% #Num #Scans 0137+012 2.00 4.00 1.50 15 7 0211+171 2.00 4.00 3.29 33 8 0241+622 2.00 4.00 2.40 24 7 0312+100 2.00 4.00 1.60 16 4 0316-444 2.00 4.00 1.20 12 10 0325+395 2.00 4.00 2.40 24 10 0410+110 2.00 4.00 1.70 17 6 0454-463 2.00 4.00 1.40 14 14 0812+020 2.00 4.00 1.90 19 7 0823-223 2.00 4.00 1.90 19 13 0912+297 2.00 4.00 1.70 17 17 1046-409 2.00 4.00 1.30 13 11 1104+728 2.00 4.00 2.50 25 5 1143-332 2.00 4.00 1.80 18 16 1251-197 2.00 4.00 3.29 33 15 1333-152 2.00 4.00 1.80 18 8 1333-337 2.00 4.00 2.10 21 13 1908+484 2.00 4.00 1.80 18 7 2135-184 2.00 4.00 2.40 24 14 2145+082 2.00 4.00 3.69 37 14 2239+096 2.00 4.00 2.79 28 12 2314-409 2.00 4.00 1.00 10 10 2329-415 2.00 4.00 1.00 10 8 2353+816 2.00 4.00 2.40 24 5 1932+204 2.00 4.00 2.79 28 8 Total 51.60 517 249 The SNR targets for this session are: ------------------------------------------------------------ SNR targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) X-band (ast_margin 10) S-band (ast_margin 10) Hh Ho Kk Ma Ny Hh Ho Kk Ma Ny Ho 20 Ho 15 Kk 20 20 Kk 15 15 Ma 20 20 20 Ma 15 15 15 Ny 20 20 20 20 Ny 15 15 15 15 Wf 20 20 20 20 20 Wf 15 15 15 15 15 We introduced a new option in sked SNR AST_MARGIN. This works the same way as the margin option in sked but applies only to 'astrometric' sources. The rationale for this option is that since these sources are not well observed we want to relax the SNR requirements on the chance that we might pick up some extra observations. ----- Parameter listing -------------------------------------- Experiment: RD1307 Description R&D-07/2013 Scheduler: NASA Correlator: HAYS Start: 2013-268-18:00:00 End: 2013-269-18:00:00 Current yyyyddd: 2013268 (2013.73) ( 16561 MJD, WED. 25SEP.) Greenwich sidereal time: 18:18: 0.00 (18: 0: 0 UT) Sun's RA and DEC: 12h 10.4m -1d 7.5 ------------------------------------------------------------------- STARTING OBSERVATIONS Observation listing from file ./rd1307.skd for experiment RD1307 Source Start DURATIONS name yyddd-hhmmss Hh Ho Kk Ma Ny Wf 0017+200 13268-180000| 72 54 120 120 | 0748+126 13268-180428| 40 40 40| 2008-159 13268-180451| 57 57 | 0241+622 13268-180757| 54 74 74 54| ------------------------------------------------------------------ ENDING OBSERVATIONS Observation listing from file ./rd1307.skd for experiment RD1307 Source Start DURATIONS name yyddd-hhmmss Hh Ho Kk Ma Ny Wf 1932+204 13269-173637| 600 600 600 600| 1803+784 13269-174909| 40 49 40 49| 2314-409 13269-175024| 101 101 | 0202+319 13269-175134| 40 40 40 | 2145+082 13269-175519| 260 260 191 | 0410+110 13269-175533| 206 206 | End of listing. SKED Summary from file ./rd1307.skd for experiment RD1307 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 6.7 Min = 0.0 Max = 75.8 (Baseline Ho-Wf on 2314-409) RMS = 9.2 Total time: 1439 minutes ( 24.0 hours). Key: Hh=HARTRAO Ho=HOBART26 Kk=KOKEE Ma=MATERA Ny=NYALES20 Wf=WESTFORD Hh Ho Kk Ma Ny Wf Avg % obs. time: 50 51 52 56 51 50 52 % cal. time: 2 2 2 2 2 2 2 % slew time: 35 28 12 14 11 10 19 % idle time: 12 17 33 27 36 37 27 total # scans: 173 178 184 183 177 182 179 # scans/hour : 7 7 8 8 7 8 7 Avg scan (sec): 249 250 246 263 246 236 247 # data tracks: 32 32 32 32 32 32 # Mk5 tracks: 32 32 32 32 32 32 Total TBytes: 3.1 3.2 3.3 3.5 3.1 3.1 3.2 Total TB(M5): 2.8 2.8 2.9 3.1 2.8 2.8 2.9 # OF OBSERVATIONS BY BASELINE | Hh Ho Kk Ma Ny Wf Total ---------------------------------------- Hh| 84 0 120 53 38 295 Ho| 88 38 20 15 245 Kk| 34 89 105 316 Ma| 99 90 381 Ny| 129 390 Wf| 377 Number of 2-station scans: 195 Number of 3-station scans: 149 Number of 4-station scans: 60 Number of 5-station scans: 0 Number of 6-station scans: 0 Total # of scans, observations: 404 1002 Average X-band SNRs by baseline | Hh Ho Kk Ma Ny Wf AVG --------------------------------------- Hh| 30 - 32 30 30 31 Ho| 23 26 30 25 27 Kk| 25 32 26 27 Ma| 51 45 39 Ny| 51 43 Wf| 39 Average S-band SNRs by baseline | Hh Ho Kk Ma Ny Wf AVG --------------------------------------- Hh| 29 - 21 18 23 23 Ho| 44 22 19 26 32 Kk| 25 23 34 33 Ma| 19 23 21 Ny| 20 20 Wf| 25 ======================================================================= Name Code GEOSX8N 8F Recording mode setup for: HARTRAO HOBART26 KOKEE MATERA NYALES20 WESTFORD Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:1 256 Mbits 512 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 32(*1) 32 0.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz Effective number of 1-bit channels recorded per sub-pass X S Total 19.128 11.477 30.605 --------------------------------------------------------- Minor options Astro Abs 100.00 EndScan Rel 1.00 NumObs Rel 1.00 StatIdle Abs 5.00 StatWt Abs 3.00 ---------------------------------------------------------- major options Subnet HhHoKkMaNyWf SkyCov Yes AllBlGood No MaxAngle 180.00 MinAngle 15.00 MinBetween 20 MinSunDist 5.00 MaxSlewTime 300 TimeWindow 24.00 MinSubNetSize 2 NumSubNet 1 Best 60 FillIn Yes FillMinSub 3 FillMinTime 120 FillBest 80 Add_ps 30.0 SNRWts Yes