Comparison of Nx2D and 3D Split-Step Fourier Methods in Realistic 3D Ducting Conditions

Hang Zhou (1) , Rémi Douvenot (1) , Alexandre Chabory (1)

1 ENAC - Ecole Nationale de l'Aviation Civile

A 3D split-step Fourier method is presented and tested. It is based on a spectral representation of the discrete wave equation in cylindrical coordinates. The formulations in this method are self-consistent in the discrete domain. This method is applied to simulate the propagation with ducts retrieved after clutter data inversion. In the numerical tests, the difference between N × 2D and 3D models is not significant. Thus, in this case, considering the 3D atmosphere effects is unnecessary.

Mots clés: 3D propagation; discrete formulation; tropos- phere propagation; ducts

Domaines: Sciences de l'ingénieur [physics]; Electromagnétisme

Hang Zhou, Rémi Douvenot, Alexandre Chabory. Comparison of Nx2D and 3D Split-Step Fourier Methods in Realistic 3D Ducting Conditions. International Applied Computational Electromagnetics Society (ACES) Symposium 2017, Aug 2017, Suzhou, China. pp.ISBN : 978-1-5090-4311-8. ⟨hal-01609755⟩