<casaxml xsi:schemaLocation="http://casa.nrao.edu/schema/casa.xsd file:///opt/casa/code/xmlcasa/xml/casa.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://casa.nrao.edu/schema/psetTypes.html">
<task visibility="experimental" category="calibration" name="fringefit" type="function">
<shortdescription>Fringe fit delay and rates</shortdescription>
Phase offsets, groups delays and delay rates are calculated with
respect to a specified referance antenna by a two-dimensional FFT and
subsequent least-squares optimisation.
Previous calibrations should be applied on the fly.
<param mustexist="true" name="vis" type="string"><shortdescription>Name of input visibility file</shortdescription><description>Name of input visibility file</description>
<param name="caltable" type="string"><shortdescription>Name of output gain calibration table</shortdescription><description>Name of output gain calibration table</description>
<param name="field" type="string"><shortdescription>Select field using field id(s) or field name(s)</shortdescription><description>Select field using field id(s) or field name(s)</description>
<param name="spw" type="string"><shortdescription>Select spectral window/channels</shortdescription><description>Select spectral window/channels</description>
<param name="intent" type="string"><shortdescription>Select observing intent</shortdescription><description>Select observing intent</description>
<param name="selectdata" type="bool"><shortdescription>Other data selection parameters</shortdescription><description>Other data selection parameters</description>
<param subparam="true" name="timerange" type="string"><shortdescription>Select data based on time range</shortdescription><description>Select data based on time range</description>
<param subparam="true" name="antenna" type="string"><shortdescription>Select data based on antenna/baseline</shortdescription><description>Select data based on antenna/baseline</description>
<param subparam="true" name="scan" type="string"><shortdescription>Scan number range</shortdescription><description>Scan number range</description>
<param subparam="true" name="observation" type="any"><shortdescription>Select by observation ID(s)</shortdescription><description>Select by observation ID(s)</description>
<any limittypes="string int" type="variant"/>
<param subparam="true" name="msselect" type="string"><shortdescription>Optional complex data selection (ignore for now)</shortdescription><description>Optional complex data selection (ignore for now)</description>
<param name="solint" type="any"><shortdescription>Solution interval: egs. \'inf\', \'60s\' (see help)</shortdescription><description>Solution interval: egs. \'inf\', \'60s\' (see help)</description>
<value type="string">inf</value>
<param name="combine" type="string"><shortdescription>Data axes which to combine for solve (obs, scan, spw, and/or field)</shortdescription><description>Data axes which to combine for solve (obs, scan, spw, and/or field)</description>
<param name="refant" type="string"><shortdescription>Reference antenna name(s)</shortdescription><description>Reference antenna name(s)</description>
<param name="minsnr" type="double"><shortdescription>Reject solutions below this signal-to-noise ratio (at the FFT stage)</shortdescription><description>Reject solutions below this signal-to-noise ratio (at the FFT stage)</description>
<param name="zerorates" type="bool"><shortdescription>Zero delay-rates in solution table</shortdescription><description>Zero delay-rates in solution table