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Normal Incidence for Graded Index SurfacesA plane wave is incident normally from vacuum (eta(sub 0) = 1) onto a smooth surface. The substrate has three layers; the top most layer has thickness d(sub 1) and permittivity epsilon(sub 1). The corresponding numbers for the next layer are d(sub 2); epsilon(sub 2), while the third layer which is semi-in nite has index eta(sub 3). The Hallikainen model [1] is used to relate volumetric soil moisture to the permittivity. Here, we consider the relation for the real part of the permittivity for a typical loam soil: acute epsilon(mv) = 2.8571 + 3.9678 x mv + 118:85 x mv(sup 2).
Document ID
20150006618
Document Type
Conference Paper
External Source(s)
Authors
Khankhoje, Uday K. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Van Zyl, Jakob (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 24, 2015
Publication Date
July 20, 2011
Subject Category
Numerical Analysis
Meeting Information
IEEE Geoscience and Remote Sensing Society (IGARSS) 2012(Munich)
Distribution Limits
Public
Copyright
Other
Keywords
plane wave