| Full Name: | herschel.hifi.pipeline.generic.FreqRanges |
| Type: | Java Class - 
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| Import: | from herschel.hifi.pipeline.generic import FreqRanges |
| Category: |
Description
Product containing the measures for frequency drifts potentially occurring during an observation.
For each group ob datasets in the original timeline product (defined by consistent LO settings) a {@link TableDataset} is constructed which contains the per channel frequencies for the comb measurements and the drift measure computed for sub-sequent frequency grids.
The drift measure is calculated by
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first, computing for each subband the average difference between corresponding channel-frequencies of the sub-sequent comb measurements and
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second, taking the maximum over the absolute values of the per subband measures computed in the first step.
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Finally, this distance is divided by teh distiance in observation time.
The drift measure is reported in units Hz / sec.