The SNR of imaging spectrometers

The SNR analysis for a single-element detector in a point mapping configuration was adapted to analyse the SNR of a pixel in an imaging FPA detector as42 

Frame coaddition in FPA detectors and spectral coaddition, as employed conventionally in FTIR spectroscopy, may be combined to achieve a net higher SNR. Since the time available for an experiment is usually specified, a data acquisition 

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