CORE-C201 (Continuous Observations of the Rotation of the Earth-C201) 2001 June 11 Notes prepared by Cynthia Thomas,NVI/GSFC Schedule name: CC201.SKD on CDDISA Nominal Start: 17:30 U.T. on June 11 (day 162) first observation at 17:30 U.T. on 4C39.25 Nominal Stop: 17:30 U.T. on June 12 (day 163) last observation at 17:13 U.T. on 1128+385 for 65-FT-HH-WZ last observation at 17:22 U.T. on 0229+131 for AP-NY Correlator: Bonn **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) 257 72828201 DSS65 (Madrid) M 65 1 (TT) 298 16658501 Fortaleza F FT 2 (HDT) 209 72974801 HartRAO H HH 1 (TT) 169 72326201 Ny Alesund N NY 1 (TT) 282 73313301 Wettzell V WZ 1 (TT) 325 72247801 Purpose ======= The purpose of CORE-C is to provide additional observing sessions for stations (Algonquin 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 HartRAO and Fortaleza baselines only 20 at X-band for other baselines 12 at S-band for HartRAO 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 106 seconds Median SNR 45.0 at X-band 40.0 at S-band Number of observations 2132 observations Average scans per station 256 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 $01JUN11ZB -------------------------------------------------------------------| | | | Maximum | Correlating | | EOP | Formal | Correlation | Parameter | | Parameters | Errors | | | |------------+----------------+-------------+----------------------| | | | | | | X-Wobble | 58.6 uas | 0.06 | HARTRAO Y COMPONENT | | Y-Wobble | 38.7 uas | 0.09 | WETTZELL Z COMPONENT | | UT1-TAI | 3.2 musec | 0.07 | WETTZELL X COMPONENT | | UT1-Rate | 6.9 musec/d | 0.08 | DSS65 X COMPONENT | |------------|----------------|-------------|----------------------| Procedures ========== Please generate the procedures for this session using drudg. SKED Summary from file ./cc201.skd for experiment CC201 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #OBS #Obs/bl 0003-066I x x x x x x x I 7 33 5.5 0048-097I xx x x I 4 6 1.0 0059+581I x x x x x x x x I 8 45 3.6 0104-408I x x x xx I 5 7 2.8 0106+013I x x x x x x I 6 43 6.4 0119+115I x xx I 3 7 .8 0119+041I x x x x I 4 15 2.2 0208-512I I 0 0 .0 0229+131I x x x x I 4 15 1.9 0235+164I x x x xx x x x x xx x x x I 14 101 13.1 CTA26 I x xx x x x x x I 8 25 5.5 0402-362I x x x x I 4 8 3.1 0454-234I x x x x x x x x I 8 27 5.5 0458-020I x x xx x I 5 7 1.1 0530-727I I 0 0 .0 0528+134I I 0 0 .0 0537-441I x x x x x I 5 5 2.1 0552+398Ix x x x x x x xx x x x x x x x x x I 18 126 14.4 0556+238I I 0 0 .0 0637-752I x x x x x x I 6 6 2.5 0718+793Ix x x x x x x x x x I 10 57 4.4 0727-115I x x xx x x x x x x x x I 12 51 8.9 0749+540I x x x x x x x x x x x x x xI 14 77 6.7 0804+499I x x x x I 4 22 2.2 0805+410I x x x x x x x x xI 9 29 2.6 0823+033I x xx x x xx x x x x x x I 13 42 6.3 OJ287 Ix x xx x xx x x x x x xx x x x I 17 111 13.9 0919-260I x x x x I 4 4 1.0 0920-397I x x I 2 2 .5 4C39.25 I x x x xx x x x x x x x x x I 14 120 13.8 OK290 I x x x x x x x I 7 24 2.5 0955+476I x x x x x x x x x I 9 52 5.4 1034-293I x x x x I 4 4 1.3 1044+719Ix x x x x x x x x x x x I 12 80 6.7 1053+815I I 0 0 .0 1057-797I x x x x x I 5 5 2.2 1104-445I x I 1 1 .4 1124-186I xx x x x x I 6 27 5.3 1128+385I x x x x x x x x x x x I 11 52 5.8 1144-379I x x I 2 4 1.7 1219+044I x x x x I 4 11 1.6 1255-316I x x x x x xI 6 10 3.0 1300+580I x x x x x x x x x I 9 55 4.6 1313-333I x I 1 1 .3 1334-127I x xx x x x x x x I 9 33 5.8 1351-018I x x x x x I 5 13 4.0 1357+769Ix x x x x x x x x x x x x x x x I 16 108 10.0 1424-418I x x x x x xI 6 10 6.3 1451-375I I 0 0 .0 1606+106I x x x x x x x xx x x x xI 13 105 14.3 1610-771I x x xI 3 3 1.3 1622-253I x x x x x x I 6 10 2.3 NRAO512 I x x x x x x x x x x x x x x x x xI 17 57 5.1 1726+455I x xI 2 16 1.8 1739+522I x x x x x x x x x x x I 11 48 4.1 1741-038I xx x x x x x x x x xI 11 48 7.5 1749+096Ix x x x x x x x x x x x I 12 112 15.0 1815-553I I 0 0 .0 1908-201I x x x x x x I 6 15 3.2 1921-293Ix x x x x I 5 9 2.4 1954-388I x x xI 3 5 2.0 1958-179Ix x x x x x x I 7 31 5.8 2005-489I I 0 0 .0 2052-474I I 0 0 .0 2121+053I x x x x x x x x x xxI 11 101 14.5 2128-123I x x x xx x x x x xI 10 16 3.1 2134+00 I x I 1 1 .1 2145+067I x x I 2 9 1.3 2234+282Ix x x x x x x x x x x x x I 13 57 6.2 2255-282I x x x x x x x x I 8 8 2.3 Total scans, obs: 462 2132 Average number of obs. per baseline per source (normalized by up-time) = 4.6 Min = .0 Max = 36.3 (Baseline Ny-Wz on 1351-018) RMS = 6.1 Total time: 1433 minutes ( 23.9 hours). Key: Ap=ALGOPARK 65=DSS65 Ft=FORTLEZA Hh=HARTRAO Ny=NYALES20 Wz=WETTZELL Ap 65 Ft Hh Ny Wz Avg % obs. time: 22 24 29 27 39 40 30 % cal. time: 2 3 2 1 3 3 2 % slew time: 53 44 32 34 15 10 31 % idle time: 20 27 35 35 42 45 34 # of tapes : 1.3 .4 1.7 .5 .6 .7 total # scans: 257 298 209 169 282 325 256 # scans/hour : 10 12 8 7 11 13 10.7 Avg scan (sec): 76 70 122 140 120 108 106 # OF OBSERVATIONS BY BASELINE | Ap 65 Ft Hh Ny Wz StnTotal -------------------------------------- Ap|257 163 131 37 185 166 682 65| 298 119 119 213 273 887 Ft| 209 108 79 98 535 Hh| 169 69 121 454 Ny| 282 251 797 Wz| 325 909 Number of 2-station scans: 157 Number of 3-station scans: 95 Number of 4-station scans: 135 Number of 5-station scans: 49 Number of 6-station scans: 26 Total # of scans, observations: 462 2132 Average baseline components for all observations Average XY = 4015. Average XZ = 4206. Average YZ = 4684. Average length = 5472.