Reconstruction of permittivity profile of stratified structures with losses on basis of divergent beam probing using multifrequency data in wide frequency band

Three well-known methods of layered structure permittivity profile reconstruction on the basis of microwave probing are under consideration. The methods are discrete analog of Gel'fand-Levitan integral equation method supposing Goupillaud model, the method of dynamic deconvolution and the method based on Newton-Kantorovich iterative scheme implementation to Riccati differential equation. The methods are discussed with assumptions of probing beam divergence and heat losses in material.