CORE-C103 
          (Continuous Observations of the Rotation of the Earth-C103)
                       
                                  2001 August 27     

                               Notes prepared by
                             Cynthia Thomas,NVI/GSFC


Schedule name:  CC103.SKD on CDDISA

Nominal Start:  17:30 U.T. on August 27 (day 239) 
                first observation at 17:30 U.T. on 4C39.25 for YK-FT
                first observation at 17:30 U.T. on 1044+719 for AP-15-KK-MC-TS 

Nominal Stop:   17:30 U.T. on August 28 (day 240)      
                last observation at 17:13 U.T. on 0528+134 for TS           
                last observation at 17:17 U.T. on 0727-115 for AP-YK-15-KK  
                last observation at 17:19 U.T. on 1741-038 for FT-MC  
                             
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)       248           72828201
Yellowknife         X        YK      2 (HDT)       135           73323401   
DSS15 (Goldstone)   D        15      1 (TT)        316           16426001
Fortaleza           F        FT      2 (HDT)       198           40476601
Kokee               K        KK      1 (TT)        329           72425901
Medicina            B        MC      1 (TT)        277           72308801
Tsukuba             T        TS      1 (TT)        325           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              107 seconds
   Median SNR                       50.0 at X-band
                                    45.0 at S-band
   Number of observations           2313 observations
   Average scans per station        261 scans


Station Information
===================
Medicina replaced Noto in this session because Noto is down for
antenna upgrades.

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  
          ====         =========
         01MAR07       CORE-3011
         01MAR19       IRIS-S160
         01MAR21       CORE-3012
         01MAR26       CONT-M1  
         01APR02       IRIS-S161
         01APR04       CORE-3013
         01APR18       CORE-3014
         01MAY02       CORE-3015
         01MAY24       IRIS-S162


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-C network. 

Also shown in the table are the maximum correlations between the Earth 
orientation parameters and other parameters. 


              Simulation for experiment $01AUG27ZZ
-------------------------------------------------------------------|
|            |                |  Maximum    |     Correlating      |
|   EOP      | Formal         | Correlation |     Parameter        |
| Parameters | Errors         |             |                      |
|------------+----------------+-------------+----------------------|
|            |                |             |                      |
| X-Wobble   |   65.4 muas    |    0.46     | DSS15    Z COMPONENT |
| Y-Wobble   |   75.2 muas    |    0.00     | YLOW7296 Z COMPONENT |
| UT1-TAI    |    2.3 musec   |    0.18     | DSS15    Y COMPONENT |
| UT1-Rate   |    4.3 musec/d |    0.17     | DSS15    Z COMPONENT |
|------------|----------------|-------------|----------------------|


Procedures
==========
Please generate the procedures for this session using drudg.




   SKED Summary from file ./cc103.skd for experiment CC103   

      (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 x  x xx x      x x   x xI    16    51   5.9
 0048-097I x  x   x  x x     x               x            I     7    21   2.5
 0059+581I        x x                                     I     2    12    .7
 0104-408I               x  x x  x     x x x              I     7     9   3.8
 0106+013I  x x        x     x x  x x  x   x   x   x  x  xI    13    44   4.6
 0119+115I x xx   x  x   x  x  x x   x  x     x  x     x xI    15    66   6.2
 0229+131Ix          x  x   x  x     x           x x   x  I     9    32   3.0
 0235+164I   x    x                 x   x  x x x      x   I     8    40   3.5
 CTA26   I x  x xx x x  x   x  x x x x x  x   xx x  x    xI    19    52   5.7
 0402-362I          x x        x   x   x x    x x x       I     9    11   3.4
 0454-234I       x x  x x x  x    x    x x x x  x x x     I    14    20   3.4
 0458-020I x   x   x    x    x   x   x x  x      x  x x   I    12    30   3.3
 0528+134Ix x x x  x   x       x  x x    x  xx x  x x x x I    17    73   6.7
 0552+398I x x x  x x   x  x  x x     x x x   x x x x  x xI    18   164  10.9
 0556+238I           x    x                    x  x  xx  xI     7    16   1.4
 0727-115Ix      x    x x x x   x x  x x  x xx xx x  xx x I    19    68   8.9
 0749+540I x    x          x                  x    x x x  I     7    55   3.1
 0804+499I   x    x x               x x   x      x        I     7    42   2.7
 0805+410I      x       x  x                  x   x  x x xI     8    34   2.5
 0823+033Ix x x  x xx           x x x     x x            xI    12    26   2.7
 OJ287   I x xx  x x x x xx       x    x x  x x  x x   x xI    18    86   7.1
 0920-397Ix x                                x   x x    x I     6     6   2.2
 4C39.25 I  x x x   x  x x x    x  x  x  x  xxx  x   x x  I    17   149  10.0
 0955+476I x x  x             x       x            x   x  I     7    77   4.8
 1034-293Ix  x x                 x   x  x     x  x x  x x I    11    13   2.6
 1044+719I                         x  x      x  x  x x  x I     7    72   3.5
 1053+815I                                 x      x       I     2    12    .7
 1104-445I   x                                    x   x   I     3     3   1.8
 1124-186I  x  x x             x x  x   x      x        xxI    10    20   2.5
 1128+385I            x  x  x     x    x   x              I     6    24   1.7
 1144-379I  x  x x              x   x         x     x x  xI     9    11   3.5
 1219+044I  x x x x x    x  x   xx  x   x        x x   x xI    15    34   3.4
 1255-316I   x x x x                    x      x      x x I     8    10   2.1
 1300+580I                 x  x    x  x    x    x         I     6    53   3.3
 1313-333Ix                                      x  x     I     3     3   1.5
 1334-127I xx x xx x  x       x   x x  x  x  x x x    x  xI    17    47   6.0
 1351-018I    x   x  x  x    x  x                  x   x  I     8    16   1.7
 1357+769I x x  x x   x   x   x    x  x  x x   x     x  x I    14   200  10.7
 1424-418Ix        x x                                    I     3     3   1.2
 1451-375I   x  x x    x                              x  xI     6     6   2.2
 1606+106I  x xx x x x  x x x  x x x x x x x x      x x  xI    20    74   7.0
 1622-253I x x x  x x x x x                  x x x       xI    12    20   3.9
 NRAO512 I    x x  x  x   x  x x         x x              I     9    35   2.6
 1726+455Ix                  x     x       x    x   x     I     6    23   1.6
 1739+522I            x    x  x  x     x        x   x     I     7    33   1.8
 1741-038Ix x  x x x x xx  xx   x   x  x  x x  x  x  x    I    18    63   7.1
 1749+096Ix x  x x x  x x x x  x x x x x x  xx xx   x x   I    21   103   9.7
 1908-201Ix  x x  xx  x x  x  x  x            x   x  x    I    13    30   4.6
 1921-293Ix x  x x   x    x  x  x                         I     8    14   3.4
 1954-388I       xx x   x    x x  x              x x x    I    10    10   3.2
 1958-179Ix  x x  x x  x  x  x  x  x            x x  x x  I    14    36   4.9
 2121+053I     x x x   x xx x   x   x x x x xx    x  xx  xI    18    68   6.8
 2128-123Ix x  x x   x x  x x   xx x x        x           I    13    25   3.1
 2145+067I                     x   x             x      x I     4    16   1.6
 2234+282I               x  x  x x      x    x x x  x x x I    11    35   2.8
 2255-282I        x  x x x x x  x x x x x                 I    11    17   3.8
 Total scans, obs:                                            597  2313

 Average number of obs. per baseline per source (normalized by up-time) =   4.2
 Min =    .0   Max =   24.0 (Baseline Yk-15 on 0727-115)   RMS =   4.7

 Total time:       1430 minutes ( 23.8 hours).

 Key:     Ap=ALGOPARK   Yk=ARIES_9M   15=DSS15      Ft=FORTLEZA   Kk=KOKEE   
          Mc=MEDICINA   Ts=TSUKUB32

                  Ap  Yk  15  Ft  Kk  Mc  Ts  Avg
 % obs. time:     22  23  30  30  41  37  34  31 
 % cal. time:      2   1   3   2   3   3   3   3 
 % slew time:     50  16  35  29  15  32  15  28 
 % idle time:     23  58  29  38  39  27  45  37 
 # of tapes :    1.3 1.3  .5 1.7  .7  .6  .5
 total # scans:  248 135 316 198 329 277 325 261 
 # scans/hour :   10   5  13   8  13  11  13 10.9
 Avg scan (sec):  76 147  83 131 109 114  91 107 

      # OF OBSERVATIONS BY BASELINE

   | Ap  Yk  15  Ft  Kk  Mc  Ts   StnTotal 
 ------------------------------------------
 Ap|248  81 203 113 130 123  95      745 
 Yk|    135 112  26 108  54  98      479 
 15|        316  94 230  96 150      885 
 Ft|            198  32 146  11      422 
 Kk|                329  46 234      780 
 Mc|                    277 131      596 
 Ts|                        325      719 


 Number of  2-station scans:  273
 Number of  3-station scans:  124
 Number of  4-station scans:  116
 Number of  5-station scans:   60
 Number of  6-station scans:   22
 Number of  7-station scans:    2

 Total # of scans, observations:   597    2313


 Average baseline components for all observations
  Average XY     = 5880.
  Average XZ     = 4679.
  Average YZ     = 4383.
  Average length = 6382.