Wave processes arising in the diffraction of waves from an annular source situated coaxially with an ideally reflecting, circular cone

The problem of the propagation of stationary oscillations from an annular source in a medium with an obstacle consisting of a semi-infinite, ideally reflecting, circular cone is considered in the hf approximation. It is assumed that the annular source is situated coaxially with the circular cone. Equations are given which describe the incident and reflected perturbation and also waves scattered from the vertex of the cone.