Session Notes for APSG (Asian Pacific Space Geodynamics) session: APSG39 Prepared by Fengchun Shu, Shanghai Astronomical Observatory =========================================================== 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 thirteen sites on the four plates. Hobart-12m, Katherine, Warkworth, and Yarragadee are on the Australian Plate. Seshan25, Urumqi, Kunming, Tsukuba, and Sejong are on the Eurasian Plate. Kokee is on the Pacific Plate. Kashima-34m, Kashima-11m, and Koganei are on the North America 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. Beginning from APSG39, the data rate is rised from 128Mbps to 512Mbps. This will increase baseline sensitivity by a factor of 2, and then improve observations of weak radio sources, especially for the southern hemisphere astrometry enchanced with north-south baselines. =========================================================== ----- Parameter listing -------------------------------------- Experiment: APSG39 Description APSG39/2016 Scheduler: SHAO Correlator: SHAO Start: 2016-272-18:00:00 End: 2016-273-18:00:00 Current yyyyddd: 2016272 (2016.75)( 17660 MJD, WED. 28 SEP.) Greenwich sidereal time: 18:31:45 (18:00:00 UT) Sun's RA and DEC: 12h 22.2m -2d 23.8 =========================================================== Important Station Information There are no observations for Kokee from 18:15 U.T. to 19:45 U.T, due to participation in the intensive session during this period. Two more Chinese stations were added to this session on ad hoc basis. Because this is just for test purpose, they are not included in this official version of schedule file. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg 0237-027 16272-180000| 400 60 400 400 338 68 400 400 145 48 132 400 400| 0003-066 16272-180649| 30 30 30 30 30 | 2357-318 16272-180821| 36 38 | 0727-115 16272-181012| 30 30 30 30 30 30 30 30 30 30 30| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg 0414-189 16273-175054| 400 101 400 400 350 117 400 400 257 84 234 400 400| 0422-380 16273-175558| 30 30 30 30 | 0115-214 16273-175740| 30 30 30 30 | 1057-797 16273-175841| 52 52 47 48| =========================================================== SKED Summary from file ./APSG39.skd for experiment APSG39 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 5.3 Min = 0.0 Max = 54.0 (Baseline Kk-Sh on 0244-452) RMS = 7.5 Total time: 1440 minutes ( 24.0 hours). Key: Hb=HOBART12 Kb=KASHIM34 K1=KASHIM11 Ke=KATH12M Kk=KOKEE Km=KUNMING Kg=KOGANEI Kv=SEJONG Sh=SESHAN25 Ts=TSUKUB32 Ur=URUMQI Ww=WARK12M Yg=YARRA12M Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg Avg % obs. time: 54 30 47 58 41 29 51 52 40 23 31 51 51 43 % cal. time: 3 3 3 3 2 3 3 3 3 4 3 3 3 3 % slew time: 8 35 9 7 11 29 8 4 26 15 23 8 7 15 % idle time: 35 31 41 31 44 37 38 40 30 57 42 38 38 39 total # scans: 247 299 236 230 188 302 221 226 282 332 268 238 231 253 # scans/hour : 10 12 10 10 8 13 9 9 12 14 11 10 10 11 Avg scan (sec): 188 87 171 216 191 84 198 200 121 60 101 184 190 152 # data tracks: 32 32 32 32 32 32 32 32 32 32 32 32 32 # Mk5 tracks: 32 32 32 32 32 32 32 32 32 32 32 32 32 Total TB(M5): 3.0 1.7 2.6 3.2 2.3 1.6 2.8 2.9 2.2 1.3 1.7 2.8 2.8 2.4 # OF OBSERVATIONS BY BASELINE | Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg Total --------------------------------------------------------------------------- Hb| 97 97 151 76 85 101 109 92 101 74 204 159 1346 Kb| 123 125 163 242 144 128 251 293 201 92 95 1954 K1| 129 81 123 181 189 114 139 130 88 130 1524 Ke| 94 127 154 147 130 135 103 143 169 1607 Kk| 136 103 93 152 167 117 74 67 1323 Km| 134 132 251 247 232 87 106 1902 Kg| 179 135 152 124 98 122 1627 Kv| 129 143 129 96 121 1595 Sh| 258 205 94 101 1912 Ts| 205 99 103 2042 Ur| 70 95 1685 Ww| 142 1287 Yg| 1410 Number of 2-station scans: 124 Number of 3-station scans: 104 Number of 4-station scans: 76 Number of 5-station scans: 75 Number of 6-station scans: 76 Number of 7-station scans: 20 Number of 8-station scans: 15 Number of 9-station scans: 19 Number of 10-station scans: 23 Number of 11-station scans: 22 Number of 12-station scans: 26 Number of 13-station scans: 30 Total number of scans: 610 Total number of obs: 10607 Total integrated obs-time: 1293651 Average obs-time: 122.0 Histogram of observation durations Dur: 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 #Obs: | 4177| 1186| 756| 552| 456| 302| 358| 314| 219| 143| 112| 181| 267| 219| 104| 80| 66| 91| 1024| Average X-band SNRs by baseline | Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg AVG -------------------------------------------------------------------------- Hb| 48 23 40 32 48 27 31 50 60 50 46 44 42 Kb| 56 51 68 137 67 74 141 203 127 49 48 108 K1| 24 29 45 29 31 54 72 48 23 22 38 Ke| 32 53 29 34 56 65 54 37 39 43 Kk| 59 35 38 65 83 59 35 29 52 Km| 56 67 138 174 140 44 50 102 Kg| 40 66 84 63 26 26 47 Kv| 75 92 71 29 31 51 Sh| 178 136 49 52 105 Ts| 166 59 60 127 Ur| 45 49 99 Ww| 38 40 Yg| 40 Average S-band SNRs by baseline | Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Yg AVG -------------------------------------------------------------------------- Hb| 25 18 17 25 24 17 14 19 25 18 19 19 20 Kb| 48 28 60 76 43 34 57 95 54 29 28 56 K1| 21 40 37 30 24 32 51 30 22 22 31 Ke| 28 27 19 16 21 29 21 17 20 22 Kk| 51 37 29 40 60 40 30 27 42 Km| 35 30 54 79 56 26 29 50 Kg| 22 30 45 29 19 20 29 Kv| 25 35 24 16 17 24 Sh| 59 40 21 21 40 Ts| 57 29 30 57 Ur| 20 22 39 Ww| 19 22 Yg| 22 =========================================================== Recording mode for: HOBART12 KASHIM34 KASHIM11 KATH12M KOKEE KUNMING KOGANEI SEJONG SESHAN25 TSUKUB32 URUMQI WARK12M YARRA12M Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 512 Mbits 128 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 8.00 MHz 1 32(*1) 32 X-band spanned bw= 380.0 MHz rms spanned bw= 131.0 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 54.0 MHz Effective number of 1-bit channels recorded per sub-pass X S Total 19.13 11.48 30.61 =========================================================== Astrometric Sources Source Min Max Actual #Num #Scans 0103+057 1.00 2.00 2.13 226 7 0235+205 1.00 2.00 0.80 85 9 0426+181 1.00 2.00 0.25 27 7 0532+255 1.00 2.00 1.61 171 7 0732+237 1.00 2.00 0.23 24 6 0747+194 1.00 2.00 0.47 50 5 0902+210 1.00 2.00 0.42 45 3 0907+230 1.00 2.00 0.35 37 3 1005+073 1.00 2.00 0.38 40 3 1123+002 1.00 2.00 0.33 35 3 1130+008 1.00 2.00 0.61 65 4 1200+028 1.00 2.00 0.48 51 5 1323-165 1.00 2.00 0.52 55 7 1527-196 1.00 2.00 0.62 66 6 1858-177 1.00 2.00 0.36 38 4 2306-052 1.00 2.00 0.72 76 7 2320-078 1.00 2.00 2.16 229 6 0244-452 1.00 2.00 1.44 153 6 1505-496 1.00 2.00 0.28 30 3 1646-506 1.00 2.00 0.19 20 5 Total 14.36 1523 106 =========================================================== Major Options Subnet HbKbK1KeKkKmKgKvShTsUrWwYg SkyCov Yes AllBlGood No MaxAngle 180.00 MinAngle 15.00 MinBetween 20 MinSunDist 5.00 MaxSlewTime 300 TimeWindow 4.00 MinSubNetSize 2 NumSubNet 1 Best 60 FillIn Yes FillMinSub 3 FillMinTime 120 FillBest 80 Add_ps 30.0 SNRWts Yes =========================================================== Minor Options Astro Abs 10.00 EndScan Rel 1.00 NumObs Rel 1.00 StatIdle Abs 3.00 StatWt Abs 5.00 =========================================================== Tape types ID Station Tape length Density Passes Hb HOBART12 Mark5B Kb KASHIM34 K5 K1 KASHIM11 K5 Ke KATH12M Mark5B Kk KOKEE Mark5B Km KUNMING Mark5B Kg KOGANEI K5 Kv SEJONG K5 Sh SESHAN25 Mark5B Ts TSUKUB32 K5 Ur URUMQI Mark5B Ww WARK12M Mark5B Yg YARRA12M Mark5B =========================================================== 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 Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Hb Kb K1 Ke Kk Km Kg Kv Sh Ts Ur Ww Kb 20 Kb 15 K1 20 20 K1 15 15 Ke 20 20 20 Ke 15 15 15 Kk 20 20 20 20 Kk 15 15 15 15 Km 20 20 20 20 20 Km 15 15 15 15 15 Kg 20 20 20 20 20 20 Kg 15 15 15 15 15 15 Kv 20 20 20 20 20 20 20 Kv 15 15 15 15 15 15 15 Sh 20 20 20 20 20 20 20 20 Sh 15 15 15 15 15 15 15 15 Ts 20 20 20 20 20 20 20 20 20 Ts 15 15 15 15 15 15 15 15 15 Ur 20 20 20 20 20 20 20 20 20 20 Ur 15 15 15 15 15 15 15 15 15 15 Ww 20 20 20 20 20 20 20 20 20 20 20 Ww 15 15 15 15 15 15 15 15 15 15 15 Yg 20 20 20 20 20 20 20 20 20 20 20 20 Yg 15 15 15 15 15 15 15 15 15 15 15 15