Session Notes for AOV012 Prepared by Fengchun Shu, Shanghai Astronomical Observatory =========================================================== PURPOSE AND GENERAL NOTES =========================================================== The Asia-Oceania VLBI Group for Geodesy and Astrometry (AOV), a sub-group of the IVS, has established an observing program focused on the region since 2015, as an extension of some already existed geodetic observing programs: AUSTRAL in Australia and New Zealand, CMONOC in China, JADE in Japan and so on. The member organizations manage all aspects of the program from scheduling through to analysis, research and publication. In AOV012, we continue test and validation of the 1Gbps observing mode at S/X band with ADS3000+, CDAS and DBBC. As KASHIM11 and KOGANEI have only narrow X-band covering 8200-8600MHz, a new frequency sequence suitable for 16MHz bandwidth is used, similar to AOV010 session. VERAMZSW can only support 128Mbps mode, so a mixed observing mode is used. We try to observe a set of weak radio sources and schedule more than 200 scans for VERAMZSW. =========================================================== ----- Parameter listing -------------------------------------- Experiment: AOV012 Description AOV012/2016 Scheduler: SHAO Correlator: SHAO Start: 2016-286-17:30:00 End: 2016-287-17:30:00 Current yyyyddd: 2016286 (2016.78)( 17674 MJD, WED. 12 OCT.) Greenwich sidereal time: 18:56:52 (17:30:00 UT) Sun's RA and DEC: 13h 13.2m -7d 45.0 =========================================================== Important Station Information VERAMZSW is required to use a separated skd file which has been sent to the station, or the vex file with mixed observing mode also suitable for the data correlation. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg 0552+398 16286-173000| 391 202 285 139 54 40 57 391 376 268| 0016+731 16286-173404| 40 40 40 40 40 | 0727-115 16286-173719| 400 93 232 93 40 40 400 298 292| End of listing. =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg 0115-214 16287-171550| 400 400 400 154 67 195 400 | 0202+319 16287-172114| 40 40 40 40 40| 0454-234 16287-172232| 373 373| 0035-534 16287-172259| 400 400 400 | 0016+731 16287-172405| 40 40 40 40 40 | 0955+476 16287-172640| 123 123 40 40 40 | 0800+618 16287-172814| 40 40 40 | End of listing. =========================================================== SKED Summary from file ./aov012.skd for experiment AOV012 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 4.4 Min = 0.0 Max = 72.0 (Baseline Kg-Ur on 1759-396) RMS = 6.9 Total time: 1439 minutes ( 24.0 hours). Key: Hb=HOBART12 K1=KASHIM11 Ke=KATH12M Kg=KOGANEI Sh=SESHAN25 Ts=TSUKUB32 Ur=URUMQI Vm=VERAMZSW Ww=WARK12M Yg=YARRA12M Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg Avg % obs. time: 72 58 69 66 49 34 52 56 67 62 58 % cal. time: 3 3 3 3 4 5 3 2 3 3 3 % slew time: 8 10 8 8 35 19 31 12 8 8 15 % idle time: 17 28 19 22 11 41 12 29 21 26 23 total # scans: 232 280 254 252 341 401 288 210 237 247 274 # scans/hour : 10 12 11 11 14 17 12 9 10 10 11 Avg scan (sec): 268 180 234 224 124 73 157 228 244 215 194 # data tracks: 32 32 32 32 32 32 32 16 32 32 # Mk5 tracks: 32 32 32 32 32 32 32 16 32 32 Total TB(M5): 8.0 6.4 7.6 7.2 5.4 3.7 5.8 3.1 7.4 6.8 6.1 # OF OBSERVATIONS BY BASELINE | Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg Total ------------------------------------------------------------ Hb| 113 205 131 150 155 66 16 173 141 1150 K1| 126 158 158 210 80 93 94 116 1148 Ke| 148 183 179 87 27 160 159 1274 Kg| 212 230 116 57 116 126 1294 Sh| 287 192 45 131 157 1515 Ts| 172 82 135 163 1613 Ur| 92 55 83 943 Vm| 21 27 460 Ww| 145 1030 Yg| 1117 Number of 2-station scans: 263 Number of 3-station scans: 128 Number of 4-station scans: 73 Number of 5-station scans: 68 Number of 6-station scans: 31 Number of 7-station scans: 32 Number of 8-station scans: 80 Number of 9-station scans: 10 Number of 10-station scans: 6 Total number of scans: 691 Total number of obs: 5772 Total integrated obs-time: 855554 Average obs-time: 148.2 Histogram of observation durations Dur: 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 #Obs: | 2387| 355| 217| 450| 368| 196| 139| 84| 74| 34| 52| 122| 193| 54| 116| 98| 83| 750| Average X-band SNRs by baseline | Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg AVG ----------------------------------------------------------- Hb| 28 45 35 66 86 52 110 53 56 55 K1| 34 46 81 109 71 83 31 29 61 Ke| 41 77 98 60 102 43 52 59 Kg| 95 127 77 94 34 36 70 Sh| 284 170 167 63 66 130 Ts| 213 205 85 83 151 Ur| 132 47 50 118 Vm| 130 100 129 Ww| 48 53 Yg| 55 Average S-band SNRs by baseline | Hb K1 Ke Kg Sh Ts Ur Vm Ww Yg AVG ----------------------------------------------------------- Hb| 23 22 22 25 36 24 31 27 31 27 K1| 34 60 62 96 62 43 28 32 54 Ke| 30 34 49 34 35 25 33 32 Kg| 53 82 48 40 25 28 47 Sh| 109 66 41 27 32 56 Ts| 91 54 41 45 73 Ur| 41 24 31 54 Vm| 37 36 42 Ww| 29 29 Yg| 33 =========================================================== Recording mode Name Code AOVSX16N SX Recording mode for: HOBART12 KASHIM11 KATH12M KOGANEI SESHAN25 TSUKUB32 URUMQI WARK12M YARRA12M Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 1024 Mbits 256 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 16.00 MHz 1 32(*1) 32 X-band spanned bw= 360.0 MHz rms spanned bw= 135.6 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 19.13 11.48 30.61 Recording mode for: VERAMZSW Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 512 Mbits 256 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 16.00 MHz 1 16(*1) 16 X-band spanned bw= 360.0 MHz rms spanned bw= 135.6 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 10.00 6.00 16.00 =========================================================== Astrometric Sources Source Min Max Actual #Num #Scans 0115+027 1.00 3.00 0.90 52 14 0335+225 1.00 3.00 0.88 51 11 0518+211 1.00 3.00 0.85 49 10 0650+239 1.00 3.00 0.55 32 5 0743+182 1.00 3.00 0.50 29 7 0854+178 1.00 3.00 0.40 23 5 0906+163 1.00 3.00 0.94 54 5 0946+181 1.00 3.00 0.61 35 4 1047+048 1.00 3.00 1.39 80 17 1127-023 1.00 3.00 1.06 61 10 1138+006 1.00 3.00 0.38 22 4 1317-005 1.00 3.00 1.72 99 12 1442-087 1.00 3.00 0.83 48 7 1534-128 1.00 3.00 1.98 114 12 1718-259 1.00 3.00 0.87 50 8 1805-214 1.00 3.00 0.24 14 8 1910-298 1.00 3.00 1.52 88 13 2154-135 1.00 3.00 1.11 64 11 2308+018 1.00 3.00 1.80 104 10 2356-069 1.00 3.00 1.25 72 5 0035-534 1.00 3.00 0.52 30 14 0241-564 1.00 3.00 0.76 44 15 0806-483 1.00 3.00 0.97 56 9 0811-477 1.00 3.00 0.29 17 4 1047-597 1.00 3.00 0.19 11 7 1253-590 1.00 3.00 0.38 22 10 1722-554 1.00 3.00 0.61 35 8 Total 23.49 1356 245 =========================================================== Weighted Station # Station Wt 8 VERAMZSW 100.00 =========================================================== Tape types ID Station Tape length Density Passes Hb HOBART12 Mark5B K1 KASHIM11 K5 Ke KATH12M Mark5B Kg KOGANEI K5 Sh SESHAN25 Mark5B Ts TSUKUB32 K5 Ur URUMQI Mark5B Vm VERAMZSW K5 Ww WARK12M Mark5B Yg YARRA12M Mark5B =========================================================== SNR targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) X-band (ast_margin 0) S-band (ast_margin 0) Hb K1 Ke Kg Sh Ts Ur Vm Ww Hb K1 Ke Kg Sh Ts Ur Vm Ww K1 20 K1 15 Ke 20 20 Ke 15 15 Kg 20 20 20 Kg 15 15 15 Sh 20 20 20 20 Sh 15 15 15 15 Ts 20 20 20 20 20 Ts 15 15 15 15 15 Ur 20 20 20 20 20 20 Ur 15 15 15 15 15 15 Vm 55 55 55 55 55 55 55 Vm 41 41 41 41 41 41 41 Ww 20 20 20 20 20 20 20 55 Ww 15 15 15 15 15 15 15 41 Yg 20 20 20 20 20 20 20 55 20 Yg 15 15 15 15 15 15 15 41 15 ===========================================================