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The Gaussian Beam Summation and the Gaussian Launching Methods in Scattering Problem

Papa Ousmane Leye 1, 2 Ali Khenchaf 1, 2 Philippe Pouliguen 3
1 Lab-STICC_ENSTAB_MOM_PIM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
2 Pôle STIC_REMS
ENSTA Bretagne - École Nationale Supérieure de Techniques Avancées Bretagne
Abstract : This paper is mainly devoted to application of the Gaussian beam summation technique in electromagnetic simulations problem. Gaussian beams are asymptotic solutions of the Helmholtz equation within the paraxial approximation. Since they are insensitive to ray transition region, several techniques based on Gaussian beam are used to evaluate high frequency EM wave equation, which overcome partially or fully the difficulties of singular regions (caustics, zero field in shadow zones). This paper concentrates on the explicit formulation of the electromagnetic field scattered from radar target. In this approach, when the incident field illuminates the target, the scattering is accounted in a complex weighing function. The wave field at a receiver is evaluated as superposition of Gaussian beams concentrated close to rays emerging from the target, passing through the neighbor of the receiver.
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https://hal.archives-ouvertes.fr/hal-01396694
Contributeur : Annick Billon-Coat <>
Soumis le : lundi 14 novembre 2016 - 18:01:32
Dernière modification le : mercredi 24 juin 2020 - 16:19:51

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Papa Ousmane Leye, Ali Khenchaf, Philippe Pouliguen. The Gaussian Beam Summation and the Gaussian Launching Methods in Scattering Problem. Journal of Electromagnetic Analysis and Applications, 2016, Journal of Electromagnetic Analysis and Applications, 8 (10), pp.219-225. ⟨10.4236/jemaa.2016.810020⟩. ⟨hal-01396694⟩

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