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Xova: Baseline-Dependent Time and Channel Averaging for Radio Interferometry

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arxiv 2101.11270 v1 pith:XCEJMY6P submitted 2021-01-27 astro-ph.IM

Xova: Baseline-Dependent Time and Channel Averaging for Radio Interferometry

classification astro-ph.IM
keywords averagingchanneldatabaseline-dependentdecorrelationinputtimexova
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Xova is a software package that implements baseline-dependent time and channel averaging on Measurement Set data. The uv-samples along a baseline track are aggregated into a bin until a specified decorrelation tolerance is exceeded. The degree of decorrelation in the bin correspondingly determines the amount of channel and timeslot averaging that is suitable for samples in the bin. This necessarily implies that the number of channels and timeslots varies per bin and the output data loses the rectilinear input shape of the input data.

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