ASD FieldSpec 3 User Manual page 73

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Table 7-1
ASD Document 600540 Rev. J
Non-photosynthetic components of the canopy have spectra which are
dominated by absorption features attributed to lignin and cellulose.
The spectral radiance leaving a vegetation canopy is significantly impacted by
many factors, such as those listed in
Major variables affecting the Bidirectional Reflectance Distribution Function
(BRDF) of a vegetated canopy
Illumination •
•
63
Chapter 7 Field Measurements
Table 7-1.
Geometry
» angle-of-incidence of Sun (or Radar)
» azimuth
Spectral characteristics
FieldSpec® 3 User Manual