SAILH is one of the earliest canopy reflectance models belonging to the Scattering by Arbitrary Inclined Leaves (SAIL) model family.
To reduce the dimensionality of the inverse problem and to assess the canopy biochemistry, SAILH was coupled with PROSPECT early in the 1990's to derive PROSAIL (Baret et al., 1992).
This was the beginning of a long series of published literature
The SAIL Family.
Reference
Light Scattering by Leaf Layers With Application to Canopy Reflectance Modeling: The SAIL Model
Verhoef, W., Light Scattering by Leaf Layers With Application to Canopy Reflectance Modeling: The SAIL Model (1984), Remote Sensing of Environment, 16, 125-141, DOI: 10.1016/0034-4257(84)90057-9.
Earth Observation Modeling Based on Layer Scattering Matrices
Verhoef, W., Earth Observation Modeling Based on Layer Scattering Matrices (1985), Remote Sensing of Environment, 17, 165-178, DOI: 10.1016/0034-4257(85)90072-0.
