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A study to analyze six band multispectral images and fabricate a Fourier transform detectorAn automatic Fourier transform diffraction pattern sampling system, used to investigate techniques for forestry classification of six band multispectral aerial photography is presented. Photographs and diagrams of the design, development and fabrication of a hybrid optical-digital Fourier transform detector are shown. The detector was designed around a concentric ring fiber optic array. This array was formed from many optical fibers which were sorted into concentric rings about a single fiber. All the fibers in each ring were collected into a bundle and terminated into a single photodetector. An optical/digital interface unit consisting of a high level multiplexer, and an analog-to-digital amplifier was also constructed and is described.
Document ID
19750021315
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Shackelford, R. G. (Georgia Inst. of Tech. Atlanta, GA, United States)
Walsh, J. R., Jr. (Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 3, 2013
Publication Date
June 21, 1975
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-CR-120684
Accession Number
75N29388
Funding Number(s)
CONTRACT_GRANT: NAS8-30534
PROJECT: PROJ. A-1592
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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