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Atmospheric and Science Complexity Effects on Surface Bidirectional ReflectanceAmong the tools used in passive remote sensing of Earth resources in the visible and near-infrared spectral regions are measurements of spectral signature and bidirectional reflectance functions (BDRFs). Determination of surface properties using these observables is complicated by a number of factors, including: (1) mixing of surface components, such as soil and vegetation, (2) multiple reflections of radiation due to complex geometry, such as in crop canopies, and (3) atmospheric effects. In order to bridge the diversity in these different approaches, there is a need for a fundamental physical understanding of the influence of the various effects and a quantiative measure of their relative importance. In particular, we consider scene complexity effects using the example of reflection by vegetative surfaces. The interaction of sunlight with a crop canopy and interpretation of the spectral and angular dependence of the emergent radiation is basically a multidimensional radiative transfer problem. The complex canopy geometry, underlying soil cover, and presence of diffuse as well as collimated illumination will modify the reflectance characteristics of the canopy relative to those of the individual elements.
Document ID
19860004334
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Diner, D. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Martonchik, J. V.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sythe, W. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hessom, C.
(California Univ. Los Angeles, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1985
Publication Information
Publication: NASA. Goddard Space Flight Center Fundamental Remote Sensing Sci. Res. Program
Subject Category
Earth Resources And Remote Sensing
Accession Number
86N13803
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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