The paper presents a statement and a proof of uniqueness of solution to the inverse problem of determination of permittivity of a lossy dielectric inclusion in a parallel-plane waveguide from the reflection and transmission characteristics. The approach is based on the analysis of asymptotic representations of a solution to the direct problem of diffraction of a transverse electric wave and employs a generalization of the notion of partial far-field patterns applied for a guide.
Shestopalov, Y. V., & Yakovlev, V. V. (2007). Uniqueness of Complex Permittivity Reconstruction in a Parallel-Plane Waveguide. Radio Science, 42(6) http://dx.doi.org/10.1029/2007RS003665
An edited version of this paper was published by AGU. Copyright 2007 American Geophysical Union.