Making Real-Time Sun Reflectance Measurements With A Microprocessor-Based Spectroradiometer

Frederic M. Zweibaum; Emmett W. Chapelle

doi:10.1117/12.957336

21 September 1979 Making Real-Time Sun Reflectance Measurements With A Microprocessor-Based Spectroradiometer

Frederic M. Zweibaum, Emmett W. Chapelle

Proceedings Volume 0180, Real-Time Signal Processing II; (1979) https://doi.org/10.1117/12.957336
Event: Technical Symposium East, 1979, Washington, D.C., United States

Abstract

A standard high-speed, field-portable spectroradiometric measurement system built around a programmable microprocessor has been adapted to the form of a Reflectometer/Comparator. In this configuration, the instrument makes passive measurements of the absolute reflectance of agricultural plant canopies over a spectral range of 0.4 to 2.5 micrometers. Realtime absolute measurements are made possible by a unique optical chopper which constantly compares the target with the sun and derives the ratio, which is the reflectance. Extensive measurements of solar reflectance from a variety of these targets have been made. The paper describes the instrumentation and measurement procedures, reviews the software programming and discusses the results.

Citation Download Citation

Frederic M. Zweibaum and Emmett W. Chapelle "Making Real-Time Sun Reflectance Measurements With A Microprocessor-Based Spectroradiometer", Proc. SPIE 0180, Real-Time Signal Processing II, (21 September 1979); https://doi.org/10.1117/12.957336

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