CORE-C202 (Continuous Observations of the Rotation of the Earth-C202) 2001 July 3 Notes prepared by Cynthia Thomas,NVI/GSFC Schedule name: CC202.SKD on CDDISA Nominal Start: 18:30 U.T. on July 3 (day 184) first observation at 18:30 U.T. on 1124-186 for AP-FT-HH first observation at 18:30 U.T. on 1351-018 for NY-WZ Nominal Start: 05:30 U.T. on July 4 (day 185) for DSS65 first observation at 05:30 U.T. on 2234+282 for 65 Nominal Stop: 18:30 U.T. on July 4 (day 185) last observation at 18:04 U.T. on 0235+164 for NY last observation at 18:17 U.T. on 1124-186 for AP-65-FT-HH-WZ 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) 267 72828201 DSS65 (Madrid) M 65 1 (TT) 171 16658501 Fortaleza F FT 2 (HDT) 214 72974801 HartRAO H HH 1 (TT) 171 72326201 Ny Alesund N NY 1 (TT) 311 73313301 Wettzell V WZ 1 (TT) 352 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 107 seconds Median SNR 45.0 at X-band 35.0 at S-band Number of observations 1822 observations Average scans per station 247 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 $01JUL03ZZ -------------------------------------------------------------------| | | | Maximum | Correlating | | EOP | Formal | Correlation | Parameter | | Parameters | Errors | | | |------------+----------------+-------------+----------------------| | | | | | | X-Wobble | 66.1 muas | -0.03 | WETTZELL Z COMPONENT | | Y-Wobble | 40.4 muas | 0.08 | WETTZELL Z COMPONENT | | UT1-TAI | 3.6 musec | 0.13 | DSS65 Z COMPONENT | | UT1-Rate | 7.4 musec/d | 0.00 | WETTZELL Z COMPONENT | |------------|----------------|-------------|----------------------| Procedures ========== Please generate the procedures for this session using drudg. SKED Summary from file ./cc202.skd for experiment CC202 (all scans with at least one subnet station) SOURCE |0 6 12 18 | #SCANS #OBS #Obs/bl 0003-066I xx x x x x x x x I 9 38 6.3 0048-097I x x x I 3 12 2.1 0059+581I x x x x x x x x x x xI 11 45 3.5 0104-408I x x x x x x I 6 8 3.1 0106+013Ix x x x x x x x I 8 41 6.2 0119+115I x x xx xI 5 5 .5 0119+041I x x x I 3 15 2.2 0208-512I x I 1 1 .4 0229+131I x x x x x x I 6 31 4.1 0235+164I x x x x x x x x x x x I 11 63 8.2 CTA26 I x xx x x x x x x x I 10 38 7.4 0402-362I x x x x I 4 8 3.1 0454-234I x x x x x x x I 7 22 4.3 0458-020I x x x x I 4 11 2.3 0530-727I I 0 0 .0 0528+134I x x x xx x x x x x I 10 35 4.1 0537-441I x x x x x I 5 5 2.1 0552+398I x x x x x x x x x x x x x x x x x xI 18 118 13.7 0556+238I I 0 0 .0 0637-752I x x x x I 4 4 1.7 0718+793Ix x x x x x x x x x x x x x I 14 55 4.2 0727-115I x x x x x xx x x x I 10 47 8.2 0749+540I x x x x x x x x x x x x xI 13 67 6.0 0804+499I x x x x I 4 15 1.4 0805+410I x x x x x x x x xI 9 28 2.5 0823+033I xx x x x x x x x x x I 11 36 5.4 OJ287 Ix x x x x x x x x x x x x x x x xI 17 99 12.4 0919-260I x x x x x x I 6 6 1.5 0920-397I x I 1 1 .2 4C39.25 I x x xx x x x x x x x x x I 13 86 10.1 OK290 I x x x x x x x xI 8 16 1.6 0955+476Ix x x x x x x x x x x x I 12 67 7.2 1034-293I x x I 2 2 .6 1044+719Ix x x x x x x x x x x x x x x I 15 71 6.1 1053+815I I 0 0 .0 1057-797I x x x x I 4 4 1.7 1104-445I x I 1 1 .4 1124-186I xx x xx x x I 7 25 4.8 1128+385Ix x x x x x x x x x x I 11 53 5.9 1144-379I x x x x I 4 10 4.7 1219+044I x x x x I 4 14 2.1 1255-316I x I 1 1 .5 1300+580I x x x x x x x x x xI 10 58 5.2 1313-333I x x I 2 2 .6 1334-127I x x x x x x x x x x x I 11 34 5.8 1351-018I x x x x I 4 8 3.2 1357+769Ix x x x x x x x x x x x x x x x I 16 87 8.8 1424-418I x x x x x x I 6 6 1.4 1451-375I I 0 0 .0 1606+106I x x x x xx x x x x x x x I 13 66 9.0 1610-771I x x x xI 4 4 1.7 1622-253I x x x x x I 5 5 1.0 NRAO512 I x x x x x x x x x x x x x x x x I 16 38 3.3 1726+455I x x x I 3 5 .5 1739+522I x x x x x x x x x x x I 11 43 4.0 1741-038I x x x x x x x xx x x x x I 13 30 6.6 1749+096I x xx x x x x x x x x x x I 13 63 8.7 1815-553I I 0 0 .0 1908-201I x x x x x I 5 5 1.1 1921-293Ix x x x x x x xI 8 8 1.6 1954-388I x xI 2 2 .5 1958-179I x xx x x x x xI 8 21 3.5 2005-489I I 0 0 .0 2052-474I I 0 0 .0 2121+053Ixx x x x x x x x I 9 58 8.4 2128-123I x x x x x x x I 7 11 2.2 2134+00 I I 0 0 .0 2145+067I x x x x x I 5 20 2.9 2234+282Ix x x x x x x x x x x x x x x I 15 37 3.7 2255-282I xx x x x I 5 7 1.9 Total scans, obs: 483 1822 Average number of obs. per baseline per source (normalized by up-time) = 4.0 Min = .0 Max = 36.3 (Baseline Ny-Wz on 1351-018) RMS = 5.4 Total time: 1428 minutes ( 23.8 hours). Key: Ap=ALGOPARK 65=DSS65 Ft=FORTLEZA Hh=HARTRAO Ny=NYALES20 Wz=WETTZELL Ap 65 Ft Hh Ny Wz Avg % obs. time: 23 14 31 28 44 45 31 % cal. time: 3 1 2 1 3 4 2 % slew time: 52 25 33 35 16 12 28 % idle time: 21 58 32 34 35 38 36 # of tapes : 1.3 .3 1.8 .5 .7 .7 total # scans: 267 171 214 171 311 352 247 # scans/hour : 11 7 8 7 13 14 10.3 Avg scan (sec): 74 72 126 144 121 110 107 # OF OBSERVATIONS BY BASELINE | Ap 65 Ft Hh Ny Wz StnTotal -------------------------------------- Ap|267 93 129 32 196 182 632 65| 171 62 64 126 161 506 Ft| 214 113 81 112 497 Hh| 171 69 124 402 Ny| 311 278 750 Wz| 352 857 Number of 2-station scans: 185 Number of 3-station scans: 138 Number of 4-station scans: 113 Number of 5-station scans: 32 Number of 6-station scans: 15 Total # of scans, observations: 483 1822 Average baseline components for all observations Average XY = 4175. Average XZ = 4279. Average YZ = 4885. Average length = 5665.