John A. Fawcett
SACLANT Undersea Res. Ctr., Viale San Bartolomeo, 400, 19038 La Spezia, Italy
A general plane-wave decomposition method for solving scattering problems
for objects in a possibly range-dependent oceanic waveguide is presented. The
waveguide's interfaces and objects within the waveguide are characterized by
plane-wave scattering matrices. The total response of the medium can be
computed by combining these matrices using an invariant embedding approach.
This operator formalism is independent of the method used to solve the
individual free-space objector interface scattering problems. The method is
derived from the theory of generalized reflection operators [B. L. N. Kennett,
Wave Motion 6, 419--429 (1984)] and is also closely related to some T-matrix
formulations [G. Kristensson and S. Strom,