Low-frequency modeling of 3-D coupled obstacles and inversion by differential evolution

Arnaud Bréard (1) , Gaële Perrusson (1) , Dominique Lesselier (1)

1 L2S - Laboratoire des signaux et systèmes

The characterization of homogeneous 3-D obstacles in a Earth-like medium in the induction regime is investigated, the interaction between obstacles being accounted for. To simplify the approach yet to keep good accuracy they are modeled by conductive ellipsoids, the extended Born approximation and a pertinent low-frequency expansion of the fields being employed in addition. The inverse problem itself is solved by differential evolution.

Keywords: differential evolution; homogeneous 3-D obstacles; Earth characterization; induction regime; extended Born approximation; low-frequency scattering; differential evolution.

Domains: Engineering Sciences [physics]; Electromagnetism

Arnaud Bréard, Gaële Perrusson, Dominique Lesselier. Low-frequency modeling of 3-D coupled obstacles and inversion by differential evolution. ACES 2007, Mar 2007, Vérone, Italy. pp.661-666. ⟨hal-00270490⟩