CORE-C102 (Continuous Observations of the Rotation of the Earth-C102) 2001 June 20 Notes prepared by Cynthia Thomas,NVI/GSFC Schedule name: CC102.SKD on CDDISA Nominal Start: 17:30 U.T. on June 20 (day 171) first observation at 18:30 U.T. on 1044+719 for AP-15-KK-TS first observation at 18:30 U.T. on 0552+398 for YK-FT-NT Nominal Stop: 17:30 U.T. on June 21 (day 172) last observation at 18:07 U.T. on 2145+067 for TS last observation at 18:15 U.T. on 0552+398 for AP-YK-15-FT-KK-NT Correlator: Haystack **Frequency Sequence**: CDPSX - Standard CDP SX sequence. (360 MHz wide at X, 85 MHz wide at S) 1 letter 2 letter Station Code Code # of tapes # of obs Occupation Code Algonquin G AP 2 (HDT) 244 72828201 Yellowknife X YK 2 (HDT) 135 73323401 DSS15 (Goldstone) D 15 1 (TT) 321 16426001 Fortaleza F FT 2 (HDT) 189 40476601 Kokee K KK 1 (TT) 377 72425901 Noto S NT 3 (HDT) 237 73303201 Tsukuba T TS 1 (TT) 349 73333601 Purpose ======= The purpose of CORE-C is to provide additional observing sessions for stations (Algonquin, Yellowknife, and Fortaleza) that have demostrated by their performance and their ability that they can participate in regular CORE sessions but do not have Mark IV capabilities. Schedule ======== This schedule was made by C. Thomas using sked. Schedule setup parameters: Early start 10 sec Minimum scan length 70 sec Maximum scan length 600 sec Minimum SNR 15 at X-band for Yellowknife and Fortaleza baselines only 20 at X-band for other baselines 12 at S-band for Yellowknife and Fortaleza baselines only 15 at X-band for other baselines Automatic scheduling setup: optimize for uniform sky coverage at all stations, maximize the number of observations, minimize slewing time, minimize time between scans, consider the top 60% of ranked scans for selection, consider the last 1 hour of scans for sky coverage calculations, minimum 40 min between scans on the same source. The characteristics of the generated schedule are listed below. These will vary slightly for each schedule that is generated. Schedule characteristics: Average scan length 113 seconds Median SNR 45.0 at X-band 40.0 at S-band Number of observations 2285 observations Average scans per station 264 scans Flux Information ================ Program snranal compares the measured performance of a session with respect to the predicted. The program calculates an empirical flux density for each source. In order to account for changes in the flux catalog since the last update based on source modeling, the fluxes in the flux catalog for the sources in the current source catalog were adjused using the following databases: Date Session ==== ========= 01JAN08 IRIS-S158 01JAN10 CORE-3007 01JAN16 NEOS-A403 01JAN23 NEOS-A404 01JAN24 CORE-3008 01JAN30 NEOS-A405 01FEB06 NEOS-A406 01FEB07 CORE-3009 01FEB13 NEOS-A407 01MAR07 CORE-3011 01MAR21 CORE-3012 Simulation Results ================== Simulated data from this schedule was used in a global solution to estimate the formal errors. The table below lists the formal errors for Earth orientation parameters. These results meet the simulation goals for the CORE-3 network. Also shown in the table are the maximum correlations between the Earth orientation parameters and other parameters. Simulation for experiment $01JUN20ZZ -------------------------------------------------------------------| | | | Maximum | Correlating | | EOP | Formal | Correlation | Parameter | | Parameters | Errors | | | |------------+----------------+-------------+----------------------| | | | | | | X-Wobble | 54.7 uas | 0.37 | DSS15 Z COMPONENT | | Y-Wobble | 81.9 uas | 0.00 | YLOW7296 Z COMPONENT | | UT1-TAI | 2.8 musec | 0.39 | DSS15 Z COMPONENT | | UT1-Rate | 4.2 musec/d | 0.03 | TSUKUB32 X COMPONENT | |------------|----------------|-------------|----------------------| Procedures ========== Please generate the procedures for this session using drudg. SKED Summary from file ./cc102.skd for experiment CC102 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #OBS #Obs/bl 0003-066Ix x x x x xx x x x x x x x x x x x x I 19 65 7.5 0048-097I x x x x x I 5 10 1.1 0059+581Ix x x x x x x x x x I 10 54 2.9 0104-408I x x x x x x x x x x x I 11 15 4.9 0106+013I x x x x x x x x x x x x x I 13 41 4.3 0119+115I x x x x x x x x x x x I 11 49 4.6 0229+131I x x x x xI 5 14 1.3 0235+164I x x x x x x x x x x x x x x I 14 54 4.8 CTA26 I x x x x x x x x x x x x x x x x xI 17 49 5.4 0402-362I x x x x x x x xx x xI 11 13 4.0 0454-234I x x x x xx x x x x x x I 12 16 2.6 0458-020I x x x x x x x x x x x xI 12 26 2.8 0528+134I I 0 0 .0 0552+398Ix x x x x x x x x x x x xx x x x x I 18 157 10.5 0556+238I I 0 0 .0 0727-115I x xx xx x x x x x x x x xx x x x x I 19 68 8.8 0749+540I x x x x x x x x x x x xI 12 65 3.8 0804+499I x x I 2 4 .2 0805+410I x x x x x x x x x x x x x x I 14 52 3.8 0823+033I x x x x x x x x x x x x x x I 14 36 3.7 OJ287 I x x x xx xx x x x x x x xx x I 16 75 6.2 0920-397I x x x x x x x x I 8 8 2.9 4C39.25 I x x x x x x x x x x x x x x xI 15 122 8.1 0955+476I x x x x x x x x x I 9 86 5.7 1034-293Ix x x x x x x x x I 9 11 2.6 1044+719Ix x x x x x xx x x x I 11 67 3.3 1053+815I x x x xI 4 21 1.2 1104-445Ix x x x x I 5 5 2.0 1124-186I x x x x x x x x x x x x x x I 14 29 4.4 1128+385I x x x x x x x x x x x I 11 76 5.2 1144-379I x x x x x x x xx xI 10 12 3.6 1219+044I xx xx x x x x x x x x x x x x x I 17 44 4.5 1255-316I x x x x x x x x I 8 8 1.4 1300+580I x x xI 3 30 2.1 1313-333I x xI 2 2 1.2 1334-127I xx xx x x x xx x x x x x x x x I 17 42 5.4 1351-018I x x x xx x x x x x I 10 25 2.7 1357+769Ix x x x x x x x x x x x x x x I 15 220 11.6 1424-418I x x x x x x x x I 8 10 3.4 1451-375I x x x x x I 5 5 1.6 1606+106I x x x x x x xx x x xx xx x x x x x x I 20 69 6.5 1622-253I x x x x x x x x xx x x x I 13 19 3.6 NRAO512 I x x x x x x x x x x x x x x I 14 47 3.5 1726+455I x x I 2 7 .5 1739+522I x x x x x x x x x x I 10 57 3.3 1741-038I x x xx x xx x x x x x x x x x x xxI 19 59 6.6 1749+096I x x x x x x xx x x x x x x x x x xI 18 99 9.4 1908-201I x x x x x x x x x xx x x x x xI 16 33 4.9 1921-293I x x x x x x x x I 8 10 2.4 1954-388I x x x x x x x x x I 9 9 2.5 1958-179I x x x x x x x x x I 9 20 2.8 2121+053I x x x x x xx x x x x x x x I 14 52 5.2 2128-123I xx x x x x x x x x x x x I 13 23 2.8 2145+067Ix x x x x x x xx I 9 27 2.7 2234+282Ix x x x x x x x x x x x x x I 14 49 3.9 2255-282I x x x x x x x x x x x I 11 19 4.0 Total scans, obs: 615 2285 Average number of obs. per baseline per source (normalized by up-time) = 4.1 Min = .0 Max = 20.4 (Baseline Yk-15 on 0727-115) RMS = 4.8 Total time: 1427 minutes ( 23.8 hours). Key: Ap=ALGOPARK Yk=ARIES_9M 15=DSS15 Ft=FORTLEZA Kk=KOKEE Nt=NOTO Ts=TSUKUB32 Ap Yk 15 Ft Kk Nt Ts Avg % obs. time: 20 25 28 33 45 39 36 32 % cal. time: 2 1 3 2 4 2 4 3 % slew time: 53 16 37 27 17 29 15 28 % idle time: 23 56 30 36 32 28 43 35 # of tapes : 1.2 1.5 .5 1.9 .7 2.2 .6 total # scans: 244 135 321 189 377 237 349 264 # scans/hour : 10 5 13 7 15 9 14 11.0 Avg scan (sec): 73 164 74 153 103 141 89 113 # OF OBSERVATIONS BY BASELINE | Ap Yk 15 Ft Kk Nt Ts StnTotal ------------------------------------------ Ap|244 83 207 90 161 78 115 734 Yk| 135 115 22 117 41 101 479 15| 321 77 267 52 168 886 Ft| 189 38 137 13 377 Kk| 377 30 271 884 Nt| 237 102 440 Ts| 349 770 Number of 2-station scans: 298 Number of 3-station scans: 110 Number of 4-station scans: 131 Number of 5-station scans: 55 Number of 6-station scans: 20 Number of 7-station scans: 1 Total # of scans, observations: 615 2285 Average baseline components for all observations Average XY = 5869. Average XZ = 4496. Average YZ = 4385. Average length = 6317.