[32] Simple expressions are found in this paper for the electromagnetic field in a waveguide with a barrier (such waveguide is the simplest model of the Earth-ionosphere waveguide) under the presence of local singular irregularities at the Earth surface. It is shown that the regularization methods make it possible to form effectively the solution under the presence of singularities in the propagation region. Two methods are considered and a comparison of the obtained solutions is performed.
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