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simulator - Module

Postscript file available

Module for simulation of telescope data
include "simulator.g"



Description

simulator provides a unified interface for simulation of telescope processing. It can create a MeasurementSet from scratch or read in an existing MeasurementSet, it can predict synthesis data onto the (u,v) coordinates or single dish data onto (ra,dec) points, and it can corrupt this data through Gaussian errors or through specific errors residing in (anti-) calibration tables.

simulator changes some columns to the MeasurementSet to store results of processing. The following columns in the MS are particularly important:

DATA
The original observed visibilities are in a column called DATA. These are normally not altered by any processing in AIPS++. However, this simulation program does overwrite these values.
CORRECTED_DATA
During a calibration process, as carried out by e.g. calibrater, the visibilities may be corrected for calibration effects. This corrected visibilities are stored in a column CORRECTED_DATA which is created on demand.
MODEL_DATA
During various phases of processing, the visibilities as predicted from some model are required. These model visibilities are stored in a column MODEL_DATA. The ft function of the imager tool should be used to calculate the model visibility for a model image or componentmodels.
Standard tools such as the table module and the ms can be used to access and possibly change these (and all other) columns.

Tools
dynamicsched tool for simulating dynamic scheduling
imageevaluator Tool for evaluating simulated images
simulator Tool for simulation




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2006-10-15