JADE-0303
             (Japanese Dynamic Earth observation by VLBI)
                           2003 Mar. 10-11           
                 Notes prepared by Shinobu Kurihara
                Geographical Survey Institute, Japan


Session JD0303
Start 2003-100 02:00:00 APR. 10
End   2003-101 01:58:00 APR. 11
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 2003 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 S. Kurihara using sked. 

Schedule setup parameters:
   Early start                            0 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  10)     S-band (margin   7)
       Ts  Ai          Ts  Ai
   Ai  20          Ai  15
   Cc  20  17      Cc  15  14

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 20% of ranked scans for selection, 
   consider the last 4 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              284 seconds
   Median SNR                       35.0 at X-band
                                    35.0 at S-band
   Number of observations           581 observations
   Average scans per station        206 scans


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

    Name  Code
  K4-16SX  K4
  Recording mode setup for:
     TSUKUB32 AIRA     CHICHI10
    Mode      Tot.Rate     Tot.BandW   #chan #bits  Barrel
   Mk34K4   128.000 Mbits  64.000 MHz   16   1     NONE
    Chan.BW  #Subpasses  Tracks(*fan)  Tot.tracks  Speed
    4.00 MHz      1          0(*0)         0       211.90 mm/s
    X-band  spanned bw=   360.0 MHz       rms spanned bw=   140.2 MHz
    S-band  spanned bw=   115.0 MHz       rms spanned bw=    42.8 MHz
    Effective number of channels recorded per sub-pass
           X         S       Total
            8.000     8.000    16.000

     1 X 8209.99 MHz
     2 X 8219.99 MHz
     3 X 8249.99 MHz
     4 X 8309.99 MHz
     5 X 8419.99 MHz
     6 X 8499.99 MHz
     7 X 8549.99 MHz
     8 X 8569.99 MHz
     9 S 2239.99 MHz
    10 S 2244.99 MHz
    11 S 2259.99 MHz
    12 S 2289.99 MHz
    13 S 2319.99 MHz
    14 S 2329.99 MHz
    15 S 2344.99 MHz
    16 S 2354.99 MHz

APPENDIX
========
   SKED Summary from file /corr/users1/schedule/skd_files/jd0303.skd for experiment JD0303

      (all scans with at least one subnet station)


 Average number of obs. per baseline per source (normalized by up-time) =   3.7
 Min =    .0   Max =   19.5 (Baseline Ts-Ai on CTA26   )   RMS =   5.3

 Total time:       1439 minutes ( 24.0 hours).

 Key:     Ts=TSUKUB32   Ai=AIRA       Cc=CHICHI10

                  Ts   Ai   Cc   Avg
 % obs. time:      44   79   78   67
 % cal. time:       2    2    2    2
 % slew time:      11    7    7    9
 % idle time:      41   10   11   21
 total # scans:   219  201  199  206
 # scans/hour :     9    8    8  8.6
 Avg scan (sec):  175  340  339  284
 Total GBytes:    690 1232 1215 1045
 # of tapes :     7.0 12.0 12.0

      # OF OBSERVATIONS BY BASELINE

   | Ts  Ai  Cc   StnTotal
 --------------------------
 Ts|219 201 199      400
 Ai|    201 181      382
 Cc|        199      380


 Number of  2-station scans:   38
 Number of  3-station scans:  181

 Total # of scans, observations:   219     581