A spectral wavenumber starter for parabolic wave equation models

Radiowave propagation based upon the parabolic wave equation (PWE) has rapidly gained acceptance as a robust method for computing electromagnetic propagation in complicated environments. The PWE method is a numerical "marching" algorithm which recursively advances the. electromagnetic field along a propagation geodesic in a sequence of steps from preexisting field distributions. This paper describes a rigorous technique based upon Green\´s functions and the Sommerfeld integral equation for generating correct PWE starter fields which account for finite conductivity and ground plane interactions. Examples are be shown at MF for broadcast type antenna over a variety of ground planes.