Low-grazing angle propagation and scattering by an object above a highly-conducting rough sea surface in a ducting environment from an accelerated MoM

Christophe Bourlier (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

In a previous paper, by combining three techniques, i.e., Subdomain Decomposi- tion Iterative Method (SDIM), Adaptive Cross Approximation (ACA) and Forward- Backward Spectral Acceleration (FBSA), from the Method of Moments (MoM), a high-efficiency calculation of the propagation and scattering in ducting maritime en- vironments has been proposed. In this paper, this algorithm is updated by adding a perfectly-conducting object above the sea surface, assumed to be highly-conducting, which makes the environment very complex. Then, to quantify the effect of the object on the total scattered field, the coherent and incoherent powers, with and without object, are simulated by considering a surface of 800,000 unknowns (length of 6 km and a frequency of 5 GHz).

Mots clés: Computational electromagnetics; Surface scattering; Propagation; Remote sensing; Ocean

Domaines: Electronique; Electromagnétisme

Christophe Bourlier. Low-grazing angle propagation and scattering by an object above a highly-conducting rough sea surface in a ducting environment from an accelerated MoM. Waves in Random and Complex Media, 2018, 28 (4), pp.724-742. ⟨10.1080/17455030.2017.1392647⟩. ⟨hal-01610895⟩