This module computes the emissivity
for a given periodic sinusoidal surface,
with a random smaller-scale component, using the I
2EM model.
Various parameters of the sinusoidal rough surface can be specified,
including the
dielectric constant
ϵ =
ϵ' -j
ϵ'',
the correlation function, and its parameters.
Also, the shape parameters of the sinusoidal function,
and the azimuth angle (azimuth = 0 corresponds to look
direction parallel to the rows). The model constrains the random
surface to (rms height / correlation length ) ≤ 0.25.