A numerically efficient technique is presented for computing the field radiated or scattered
from three-dimensional objects embedded within layered acoustic media. The distance
between the receivers and the object of interest is supposed to be large compared to the
acoustic wavelength. The method requires the pressure and normal particle displacement
on the surface of the object or on an arbitrary circumscribing surface, as an input, together
with a knowledge of the layered medium Green's functions. The numerical integration of the …