### ASA 127th Meeting M.I.T. 1994 June 6-10

## 5pUW3. A new formulation for scattering from two objects and objects near
an interface with application.

**M. F. Werby
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*Code 7181, Naval Res. Lab., Stennis Space Center, MS 39529
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It is usual to employ a Green's function technique to develop the
mathematical framework to describe scattering from two or more objects or
objects near a reflecting interface. The method is perforce rather specific and
tedious to develop and leads to a form not very susceptible to physical
interpretation. In this work a method is demonstrated that enables one to
describe scattering from multiple targets or targets near an interface that is
(1) independent of the target boundary conditions, (2) independent of the
scattering theory for the single scatterer, and (3) that enables one to gain
insight in the scattering process that is not manifest in the usual
formulations. Then the method is applied to several classes of targets and
raise some issues of how the usual theories are implemented that is apparent
from this formulation but not apparent in the usual integral equation--Green's
function approach. [Work sponsored by the Naval Research Laboratory 6.1 Program
Element 0601153N.]