Bottom-of-Atmosphere (BOA) reflectance is also called surface reflectance and consists of the solar radiation that is reflected from the Earth's surface.
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‘The top-of-atmosphere reflectance is converted to surface reflectance (also known as bottom-of-atmosphere reflectance, or top-of-canopy reflectance or in vegetation studies). Top-of-canopy reflectance can be understood as reflectance as would be measured from just above the vegetation. This phase requires knowledge of atmospheric conditions present during the image acquisition time frame. The resulting image is called atmospherically corrected.’
Understand atmospheric parameters that influence bottom of atmosphere (BOA) reflectance
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