The Radiation of Small Amplitude Waves on the Free Surface by a Pulse Source Inside a Conical Horn

We study how the geometric parameters of a horn affect raising the radiation efficiency and signal focusing for a pulse source lying on the free surface. Some dependences are obtained of the radiation intensity on the geometry of the horn, observation coordinates, and the frequencies of the source pulsations. We state criteria for determining the efficiency of the horn. Graphical and analytical dependencies are found of the distant-field radiation intensity on the parameters of the problem. An optimization technique is developed for the radiating source-horn system by adjusting its geometric parameters. The parameter values are determined that guarantee the most efficient operation of a radiating source-horn system from the viewpoint of localizing the radiation in an effective angle.