Computing High-Frequency Scattered Fields by Beam Propagation Methods: A Prospective Study

Xavier Antoine (1, 2) , Yuexia Huang (3) , Ya Yan Lu (3)

1 EDP - Equations aux dérivées partielles
2 CORIDA - Robust control of infinite dimensional systems and applications
3 HKU - Department of Mathematics

This paper presents some theoretical and numerical investigations concerning the fast computation of an exterior wave field to a scatterer by the Beam Propagation Method (BPM). Different models are presented and compared. It appears that the approach is able to correctly model the propagation of the propagative modes of the wave field while inaccuracies still remain for the evanescent and transition modes.

Mots clés: Acoustic scattering; Beam propagation methods; One-way equations

Domaines: Analyse numérique [math.NA]; Mathématiques générales [math.GM]

Xavier Antoine, Yuexia Huang, Ya Yan Lu. Computing High-Frequency Scattered Fields by Beam Propagation Methods: A Prospective Study. Journal of Algorithms and Computational Technology, 2010, 4 (2), pp.147-166. ⟨10.1260/1748-3018.4.2.147⟩. ⟨hal-00591429⟩