JADE-0503
             (Japanese Dynamic Earth observation by VLBI)
                           2005 Mar 16-17           
                 Notes prepared by fujisaku@gsi.go.jp
                Geographical Survey Institute, Japan


Session JD0503
Start 2005-075 02:00:00 Mar 16
End   2005-076 21:57:10 Mar 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 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           1178 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/jd0503.skd for experiment JD0503  

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =  25.8
 Min =    .0   Max =   46.7 (Baseline Ts-Cc on 1741-038)   RMS =  13.1

 Total time:       2639 minutes ( 44.0 hours).

 Key:     Ts=TSUKUB32   Ai=AIRA       Cc=CHICHI10

                  Ts   Ai   Cc   Avg
 % obs. time:      27   82   81   63 
 % cal. time:       2    2    2    2 
 % slew time:       9    6    6    7 
 % idle time:      59    8    9   25 
 total # scans:   422  410  396  409 
 # scans/hour :     9    9    9 17.1
 Avg scan (sec):  103  318  326  249 
 Total GBytes:    783 2353 2324 1821 
 Total GB(M5):    696 2092 2066 1618 
 # of tapes :     8.0 23.0 23.0
 tape change times (hhmm):
                 0737 0352 0401 
                 1351 0546 0554 
                 1956 0741 0748 
                 0032 0928 0937 
                 0508 1123 1123 
                 1111 1318 1318 
                 1728 1504 1515 
                 0000 1700 1711 
                 0000 1849 1904 
                 0000 2057 2102 
NOTE: This schedules uses  22 tapes. Tapechanges times are listed for the first  10 tapes.

Total number of tapes:  54.0  Total GBytes (M5) recorded:  4855.4

      # OF OBSERVATIONS BY BASELINE

   | Ts  Ai  Cc   StnTotal 
 --------------------------
 Ts|422 406 392      798 
 Ai|    410 380      786 
 Cc|        396      772 


 Number of  2-station scans:   50
 Number of  3-station scans:  376

 Total # of scans, observations:   426    1178