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Fellgett's Advantage in uv-VIS Multiplex Spectroscopy

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The effect of multiplexing in Fourier transform spectroscopy (FTS) (and other coding techniques such as Hadamard transform spectroscopy) on the signal/noise ratio arises from two factors. The first of these is a N ½ improvement for a spectrum containing N resolution elements since each individual resolution element is now viewed for an N-fold longer time. The second factor is due to the simultaneous observation of all resolution elements, raising the signal level by a factor N for an uniform spectrum.

Keywords: Instrumentation, uv-visible; Interferometry; Visible-uv spectroscopy

Document Type: Short Communication

DOI: http://dx.doi.org/10.1366/000370276774456525

Affiliations: Block Engineering, Inc., 19 Blackstone Street, Cambridge, Massachusetts 02139

Publication date: January 1, 1976

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