Spectral Signatures - Visable radiation and plant characteristics
3 important questions on Spectral Signatures - Visable radiation and plant characteristics
How does vegetation colour green to the eye?
Chlorofyll a (green yellow) and b (blue green) absorb the visable light and have two peaks (0.45microm, 0.65)
What is the spectral signature?
The characteristic pf the reflection of an object defined by the reflectance as a function of the wavelength.
What influences the spectral reflectance?
Hairs, wax, leaf surface. Other factors: conditions of nutrition and the water supply of a crop changing both the signature of the leaves and the crop structure. Infections of the leaves.
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