Study on Hadamard transform imaging spectroscopy

Ji-Zong Wu; Jia-cheng Deng; Ben-zhi Chen

doi:10.1117/12.26100

1 March 1991 Study on Hadamard transform imaging spectroscopy

Ji-Zong Wu, Jia-cheng Deng, Ben-zhi Chen

Proceedings Volume 1399, Optical Systems in Adverse Environments; (1991) https://doi.org/10.1117/12.26100
Event: Singapore, 1990, -, Singapore

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.

Citation Download Citation

Ji-Zong Wu, Jia-cheng Deng, and Ben-zhi Chen "Study on Hadamard transform imaging spectroscopy", Proc. SPIE 1399, Optical Systems in Adverse Environments, (1 March 1991); https://doi.org/10.1117/12.26100

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