JADE-0502
             (Japanese Dynamic Earth observation by VLBI)
                           2005 FEB 23-24           
                 Notes prepared by fujisaku@gsi.go.jp
                Geographical Survey Institute, Japan


Session JD0502
Start 2005-054 02:00:00 FEB 23
End   2005-055 01:56:00 FEB 24
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 2005 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
Shintotsukawa S3


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                        45 at X-band
                                     40 at S-band
   Number of observations           616 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/jd0502.skd for experiment JD0502  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =  13.2
 Min =    .0   Max =   25.9 (Baseline Ts-Ai on 1921-293)   RMS =   8.5

 Total time:       1437 minutes ( 24.0 hours).

 Key:     Ts=TSUKUB32   Ai=AIRA       Cc=CHICHI10

                  Ts   Ai   Cc   Avg
 % obs. time:      27   83   81   64 
 % cal. time:       2    2    2    2 
 % slew time:      10    6    6    7 
 % idle time:      59    7    8   25 
 total # scans:   222  215  207  214 
 # scans/hour :     9    8    8  8.9
 Avg scan (sec):  106  333  341  260 
 Total GBytes:    425 1289 1272  996 
 Total GB(M5):    378 1146 1131  885 
 # of tapes :     5.0 13.0 13.0
 tape change times (hhmm):
                 0701 0356 0356 
                 1344 0548 0554 
                 2008 0740 0740 
                 0051 0927 0927 
                 0000 1124 1115 
                 0000 1321 1312 
                 0000 1513 1513 
                 0000 1659 1713 
                 0000 1855 1855 
                 0000 2059 2103 
NOTE: This schedules uses  12 tapes. Tapechanges times are listed for the first  10 tapes.

Total number of tapes:  31.0  Total GBytes (M5) recorded:  2655.9

      # OF OBSERVATIONS BY BASELINE

   | Ts  Ai  Cc   StnTotal 
 --------------------------
 Ts|222 213 205      418 
 Ai|    215 198      411 
 Cc|        207      403 


 Number of  2-station scans:   28
 Number of  3-station scans:  196

 Total # of scans, observations:   224     616