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Simulations

A set of procedures described in Section 15.2 of this manual is used to create a star table. Note that the plotuptime procedure which produces a plot with the rise and set times of the stars does not currently take the delay limits into account. In order to do this, run fakedata (with dutycycle=0.1 and simulate a data set using the star table and selected configuration. Then use plotuptime,1 to plot rise and set times derived from the data.

fakedata,stations$<$_char$>$,starids$<$_char$>$ [,dutycycle=dutycycle]

Simulate scan data for a full observation (scan every hour while the star is up) with NPOI using the stations given in the input character array.
Example: fakedata,['N00','N05','N10','W06','W08','W10'],'FKV0621' If stars are not specified, the startable will be used instead. Date and SystemID will default to the current date and NPOI, unless set manually. The dutycycle specifies the interval (in hours) between successive observations of the same star.

mockdata,[,pearl=pearl][,poisson=poisson][triple=triple][,init=init]

Replace observed visibilities and triple data with model values, in combination with fakedata or with real data sets. Poisson noise can be added, based on the photon rates of the data set.

To show the $uv$-tracks for the simulated data on top of an image of the visibility amplitude function, first plot the $uv$-coverage and read a model file with readmodel, and then use uvimage,/uv to underlay the grey scale amplitude image.


next up previous contents
Next: Observing list preparation Up: Introduction Previous: Introduction   Contents
Christian Hummel 2015-04-28