Ra. Sack et M. West, A PARABOLIC EQUATION FOR SOUND-PROPAGATION IN 2 DIMENSIONS OVER ANY SMOOTH TERRAIN PROFILE - THE GENERALIZED TERRAIN PARABOLIC EQUATION (GT-PE), Applied Acoustics, 45(2), 1995, pp. 113-129
A new parabolic equation (PE) incorporating a simple terrain following
transformation is derived which allows a range dependent solution for
the field from a point or line radiator. Predictions with the general
ised terrain-PE are in close agreement with those from an effective ba
rrier model for a simple hill taken as a test case.