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Proceedings Paper

Data Processing Aspects Of Rapid Scanning Very High Resolution Fourier Transform Spectrometers
Author(s): H. Buijs
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Paper Abstract

In order to achieve high signal to noise ratio in spectra obtained via a fourier transform spectrometer, it is necessary to manipulate interferogram information with a minimum of distortion in addition to maintaining a low level of random noise. This requirement leads to the use of constant gain linear phase detection and amplification of the interferogram signal in particular in the presence of inevitable mirror velocity variations. Oversampling of the signal simplifies the implementation of constant gain linear phase response, but leads to large volumes of data when operating at high resolution. A vector processor has been developed which permits real time digital filtering and phase correction of the oversampled interferogram. The output interferogram, which is represented by the lowest number of samples consistent with the bandwidth of interest, is also symmetric. Simple cosine fourier transformation yields the spectrum.

Paper Details

Date Published: 29 October 1979
PDF: 5 pages
Proc. SPIE 0191, Multiplex and/or High Throughput Spectroscopy, (29 October 1979); doi: 10.1117/12.957819
Show Author Affiliations
H. Buijs, Bomem Inc. (Canada)

Published in SPIE Proceedings Vol. 0191:
Multiplex and/or High Throughput Spectroscopy
George A. Vanasse, Editor(s)

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