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analysis:solve

This wiki is not maintained! Do not use this when setting up AuScope experiments!

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The full guide to using Calc/Solve is here. The following information describes the process used at Hobart and is aimed at routine processing of post-correlation data.

Prepare level 2/3 databases

Level 2 databases have an updated clock model applied (using calc11), replacing the model used by the correlator. To generate new databases, edit the up11.inputs file with the new database names (note the leading $):

$14FEB05XT
$14FEB05ST

and then run up11 up11.inputs AU. After completion, you should have 14FEB05XT_V002 and 14FEB05ST_V002 in /data/vlbi/mark3_dbh

Level 3 databases have cable cal and MET data added to provide an apriori atmosphere model. This is usually only applied to the X-band data. First, download the station log files with wget http://lupus.gsfc.nasa.gov/ivs/ivsdata/aux/2014/aust19/aust19hb.log, etc. Then run pwxcb aust19hb.log. You will be prompted to confirm some details of the experiment, and optionally edit the recorded MET data. When running pwxcb for the first log of an experiment, you will be prompted to give name of the database that this experiment is linked to - use the same syntax as in the up11 file (e.g $14FEB05XT). Repeat pwxcb for all stations in the experiment and then apply the calibrations by running dbcal /data/vlbi/wxcb/aust19.dbcal. After completion, you should now have a 14FEB05XT_V003 file in /data/vlbi/mark3_dbh

Start calc/solve & get a viable solution

First start Calc/Solve with the command enter AU. Once inside the Calc/Solve system, be extremely careful with your typing as almost any keypress can and will be quietly interpreted to change various settings. Also, default settings may not always be displayed, or displayed correctly on start-up. A last warning - Calc/Solve always starts up with the same data & settings loaded as when it was last run. To restart an analysis

  • Load in the data, starting with X-band: Enter G to get some data through the SDBH program. Tap * to toggle the mode between between the append and replace modes. Use replace if starting afresh. Type K to enter the X-band database and version number ($14FEB05XT 03). Press enter to read the history file and a list of aprioris until you get back to the SDBH window. NB - you msy see some Warnings about Hart15 not being in the Flyby file - these are benign. Toggle the mode to append with*, and then use K to load in the S-band database. Again, review the information by pressing enter until you reach the SDBH window again & then return to the main window by pressing O

Prepare level 4 database & convert to NGS format

/home/www/auscope/opswiki/data/attic/analysis/solve.1407740487.txt.gz · Last modified: 2014/08/11 07:01 by Jamie McCallum