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About the Book



Principal Authors:
Fawwaz T. Ulaby
David G. Long,

Contributing Authors:
William Blackwell
Charles Elachi
Adrian Fung
Chris Ruf
Kamal Sarabandi
Jakob van Zyl
Howard Zebker

Language: English
ISBN: 978-0-472-11935-6


Code 12.6: ZRT Emission Model for a Layer with Distinct Upper Boundary

Code Name: ZRTemission_DUB.m

Description: Code computes emissivity of a snow layer above ground (or ice or oil layer above water). See Fig. 12-17. The top boundary is assumed to be planar, but the lower boundary can be rough.

Input Variables:

  ε2 = ε2 '- jε2 '':    Dielectric constant of middle layer (unitless)
  Θ1:    Incidence angle (degrees)
  f:    Frequency (GHz)
  s:    rms height of lower boundary (m)
  l:    Correlation length of lower boundary (m)
  a:    Single-scattering albedo of middle layer (unitless)
  κe:    Extinction coefficient of middle layer (Np/m)
  d:    depth of middle layer (m)
  ε3 = ε3 '- jε3 '':    Dielectric constant of bottom medium (unitless)

Output Products:

  eh(Θ1):    h-polarized emissivity (unitless)
  ev(Θ1):    v-polarized emissivity (unitless)

Book Reference: Section 12-6

Code: module12_6.m