A Portable Instrument for Measuring Apparent Directional Reflectance

R. E. Oliver; J. K. Berry; J. A. Smith

doi:10.1117/12.7971876

1 June 1975 A Portable Instrument for Measuring Apparent Directional Reflectance

R. E. Oliver, J. K. Berry, J. A. Smith

Author Affiliations +

Optical Engineering, Vol. 14, Issue 3, 143244 (June 1975). https://doi.org/10.1117/12.7971876

Abstract

A portable battery-powered spectroradiometer has been constructed for the measurement of the apparent directional reflectance of natural targets. A silicon detector that is tripod mounted and positioned to monitor a horizontally oriented reference panel determines the target irradiance. A second detector for measurement of target radiance is mounted on the tripod swivel head. Electronic switching provides alter-nate detector references for the determination of apparent directional reflectance. Snap-on interference filters allow measurement in desired spectral bands. Equipment calibration procedures are discussed and typical experimental radiation data are given.

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R. E. Oliver, J. K. Berry, and J. A. Smith "A Portable Instrument for Measuring Apparent Directional Reflectance," Optical Engineering 14(3), 143244 (1 June 1975). https://doi.org/10.1117/12.7971876

Published: 1 June 1975

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