JADE-0412
             (Japanese Dynamic Earth observation by VLBI)
                           2004 DEC 16-17           
                 Notes prepared by fujisaku@gsi.go.jp
                Geographical Survey Institute, Japan


Session JD0412
Start 2004-351 02:00:00 DEC 16
End   2004-352 01:56:10 DEC 17
Stations  3
Ts  TSUKUB32  T
Ai  AIRA      A
Cc  CHICHI10  C

Duration:      24 hours
Correlator:    TSUKUBA(GSI)
 
PURPOSE
=======
The purpose of the JADE sessions is to monitor the plate motion and 
the local crustal movement around Japan. 
In 2004 fiscal year, JADE session will be carried out once a month. 

NETWORK
=======
The standard configuration of the JADE projests consists of 
four stations. 

Station:      Code   
Tsukuba       Ts
Aira          Ai
Chichijima    Cc


SCHEDULE
========
This schedule was made by fujisaku@gsi.go.jp using sked. 

Schedule setup parameters:
   Early start                     10 sec 
   Corr. tape sync time            30 sec 
   Minimum scan length             100 sec 
   Maximum scan length             784 sec
 Minimum SNR by baseline for multi-baseline scans
     X-band (margin   7)     S-band (margin   7)
     Ts  Ai          Ts  Ai  
 Ai  19          Ai  16
 Cc  19  16      Cc  16  13

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 LatLonH of ranked scans for selection, 
   consider the last 0 hour of scans for sky coverage calculations,
   minimum 30 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               seconds
   Median SNR                        40 at X-band
                                     35 at S-band
   Number of observations           579 observations
   Average scans per station         scans

FREQUENCY SEQUENCE      
==================

Chann#   Band    Skyfreq(MHz)     LOfreq(MHz)
   1       x       8209.99         7680.0  
   2       x       8219.99         7680.0  
   3       x       8249.99         7680.0  
   4       x       8309.99         7680.0  
   5       x       8419.99         7680.0  
   6       x       8499.99         7680.0  
   7       x       8549.99         7680.0  
   8       x       8569.99         7680.0  
   9       s       2239.99         1600.0  
  10       s       2244.99         1600.0  
  11       s       2259.99         1600.0  
  12       s       2289.99         1600.0  
  13       s       2319.99         1600.0  
  14       s       2329.99         1600.0  
  15       s       2344.99         1600.0  
  16       s       2354.99         1600.0  
 
APPENDIX
========

   SKED Summary from file /corr/users1/schedule/skd_files/jd0412.skd for experiment JD0412  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =   3.9
 Min =    .0   Max =   27.2 (Baseline Ts-Ai on 1622-253)   RMS =   6.6

 Total time:       1438 minutes ( 24.0 hours).

 Key:     Ts=TSUKUB32   Ai=AIRA       Cc=CHICHI10

                  Ts   Ai   Cc   Avg
 % obs. time:      29   81   81   63 
 % cal. time:       2    2    2    2 
 % slew time:       9    5    5    6 
 % idle time:      59   10   10   26 
 total # scans:   218  203  203  208 
 # scans/hour :     9    8    8  8.7
 Avg scan (sec):  115  344  346  268 
 Total GBytes:    454 1259 1267  994 
 Total GB(M5):    404 1119 1126  883 
 # of tapes :     5.0 13.0 13.0
 tape change times (hhmm):
                 0727 0353 0353 
                 1333 0550 0550 
                 1920 0743 0750 
                 2351 0939 0939 
                 0000 1138 1138 
                 0000 1329 1329 
                 0000 1529 1521 
                 0000 1730 1730 
                 0000 1924 1924 
                 0000 2138 2118 
                 0000 2351 2320 
                 0000 0156 0128 

Total number of tapes:  31.0  Total GBytes (M5) recorded:  2649.9

      # OF OBSERVATIONS BY BASELINE

   | Ts  Ai  Cc   StnTotal 
 --------------------------
 Ts|218 198 198      396 
 Ai|    203 183      381 
 Cc|        203      381 


 Number of  2-station scans:   45
 Number of  3-station scans:  178

 Total # of scans, observations:   223     579