A system to perform real-time Fourier spectroscopy
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Publication
1968 - Office of Aerospace Research, United States Air Force, Bedford, Mass, Massachusetts
Language
English
Word Count
27,000 words, Guess
Page Count
108 pages
Identifiers
- Open LibraryOL60589472M
- OCLC Control Number318201347
Classifications
- LCCQC454.F72 H6 1968
Description
A real-time system to perform Fourier spectroscopy is described. The spectral distribution is synthesized by the successive summation of cosine functions with amplitudes and frequencies which are determined by the sample points of the interferogram. Summation of these cosine functions is performed in a digital memory oscilloscope which has 1024 addresses. The design criteria and the principles of operation of the system are discussed in detail. Sources of error are examined and several methods of error reduction are discussed. The limitations of this type of system are described and improvements are recommended. Experimental data are presented and the performance of the real-time system is compared to that of a special purpose analog computer, and a digital computer. (Author).
Subjects
Series Statement
- Instrumentation papers -- no. 146
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