Validation of canopy bidirectional reflectance models with ASAS imagery of a spruce forest in Maine

Advanced Solid-state Array Spectroradiometer (ASAS) directional imagery of a spruce forest is used in an initial validation of the Li-Strahler geometric-optical model and the Li-Strahler hybrid geometric-optical radiative-transfer model. Although the magnitudes of the modeled principal plane bidirec...

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Bibliographic Details
Published inProceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium Vol. 3; pp. 1832 - 1834 vol.3
Main Authors Schaaf, C.B., Xiaowen Li, Strahler, A.H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1994
Subjects
Bidirectional control
Geophysical measurements
Layout
Radiometry
Reflectivity
Scattering
Shadow mapping
Solid modeling
Solid state circuits
Spectroradiometers
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Summary:Advanced Solid-state Array Spectroradiometer (ASAS) directional imagery of a spruce forest is used in an initial validation of the Li-Strahler geometric-optical model and the Li-Strahler hybrid geometric-optical radiative-transfer model. Although the magnitudes of the modeled principal plane bidirectional reflectances generally correspond to the ASAS measurements, the geometric-optical model results reproduce the trends of the ASAS reflectances more closely. Both models tend to overestimate the impact of mutual shadowing at large view zenith angles.< >
ISBN:0780314972
9780780314979
DOI:10.1109/IGARSS.1994.399581