A Hybrid Method For Solving Scattering Problems By Complex Bodies

The Discrete Dipole Approximation is a well-documented method to solve scattering problems by inhomogeneous or complicatedly shaped bodies. However, it is not well-suited to deal with several disconnected obstacles. In the present work, we present a modified version of the DDA to obtain the field scattered by one body. This field is then represented by means of a single layer potential in order to derive an efficient multiple scattering theory that allows to solve the problem of the scattering of a wave by a periodic or aperiodic collection of obstacle.