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Proceedings Paper

Study on Hadamard transform imaging spectroscopy
Author(s): Ji-Zong Wu; Jia-cheng Deng; Ben-zhi Chen
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Paper Abstract

Hadamard transform imaging spectroscopy (HTIS) based on a measuring principle of double coding modulation for light beam imaging is considered. HTIS is capable of providing high signal-to-noise ratios for spectral testing and detecting weak infrared signals. Topics discussed include a reconstruction formula for the images and spectra in the case of longitudinal folded 2D spatial encoding; design considerations of incidence and exit encoding plates; a schematic diagram of self-made setup of HTIS, a block diagram of software and main electronics to automatically control the whole testing process using IBM PC/XT microcomputer; and results of the infrared absorption imaging spectral testing for CO2.

Paper Details

Date Published: 1 March 1991
PDF: 8 pages
Proc. SPIE 1399, Optical Systems in Adverse Environments, (1 March 1991); doi: 10.1117/12.26100
Show Author Affiliations
Ji-Zong Wu, Tianjin Univ. (China)
Jia-cheng Deng, Tianjin Univ. (China)
Ben-zhi Chen, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 1399:
Optical Systems in Adverse Environments
Soon Fatt Yoon; M. H. Kuok; Donald E. Silva, Editor(s)

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