JADE-0501
             (Japanese Dynamic Earth observation by VLBI)
                           2005 Jan 13-14           
                 Notes prepared by fujisaku@gsi.go.jp
                Geographical Survey Institute, Japan


Session JD0501
Start 2005-013 02:00:00 Jan 13
End   2005-014 01:58:20 Jan 14
Stations  4
Ts  TSUKUB32  T
Ai  AIRA      A
Cc  CHICHI10  C
S3  SINTOSU3  J

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
                                     35 at S-band
   Number of observations           630 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/jd0501.skd for experiment JD0501  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =  15.2
 Min =    .0   Max =   30.0 (Baseline Ts-Cc on 0552+398)   RMS =   8.7

 Total time:       1440 minutes ( 24.0 hours).

 Key:     Ts=TSUKUB32   Ai=AIRA       Cc=CHICHI10

                  Ts   Ai   Cc   Avg
 % obs. time:      26   82   81   63 
 % cal. time:       2    2    2    2 
 % slew time:      10    6    6    7 
 % idle time:      60    8    9   26 
 total # scans:   229  220  214  221 
 # scans/hour :     9    9    8  9.2
 Avg scan (sec):  100  322  328  250 
 Total GBytes:    414 1275 1264  985 
 Total GB(M5):    368 1133 1124  875 
 # of tapes :     5.0 13.0 13.0
 tape change times (hhmm):
                 0703 0355 0402 
                 1250 0552 0601 
                 1916 0752 0813 
                 0109 0953 1004 
                 0000 1147 1159 
                 0000 1347 1352 
                 0000 1540 1548 
                 0000 1734 1744 
                 0000 1930 1947 
                 0000 2128 2141 
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:  2626.5

      # OF OBSERVATIONS BY BASELINE

   | Ts  Ai  Cc   StnTotal 
 --------------------------
 Ts|229 217 211      428 
 Ai|    220 202      419 
 Cc|        214      413 


 Number of  2-station scans:   33
 Number of  3-station scans:  199

 Total # of scans, observations:   232     630