EM Scattering From a Target Above a 1-D Randomly Rough Sea Surface Using GPU-Based Parallel FDTD

Author

Chungang Jia ; Lixin Guo ; Pengju Yang

Author_Institution

Sch. of Phys. & Optoelectron. Eng., Xidian Univ., Xi´an, China

Volume

14

fYear

2015

fDate

2015

Firstpage

217

Lastpage

220

Abstract

This letter presents the graphics processing unit (GPU)-based finite-difference time-domain (FDTD) algorithm to investigate the electromagnetic (EM) scattering from a target above a rough sea surface. The proposed method is validated by comparing the numerical results to those obtained through sequential FDTD execution on a central processing unit (CPU), as well as through method of moments (MOM). The comparison results show a significant improvement in computation efficiency for GPU-based FDTD versus the message passing interface (MPI)-based FDTD. Furthermore, our parallel implementation is employed to study the influences of wind speed and the tilt angle of the target on composite scattering from the target above a sea surface.

Keywords

computational electromagnetics; electromagnetic wave scattering; finite difference time-domain analysis; graphics processing units; message passing; method of moments; 1D randomly rough sea surface; EM scattering; GPU-based parallel FDTD algorithm; MPI-based FDTD; central processing unit; electromagnetic scattering; graphics processing unit-based finite-difference time-domain algorithm; message passing interface-based FDTD; method-of-moments; sequential FDTD execution; tilt angle; wind speed; Finite difference methods; Instruction sets; Rough surfaces; Scattering; Sea surface; Surface roughness; Time-domain analysis; Composite scattering; finite-difference time domain (FDTD); graphics processing unit (GPU); sea surface;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2360415

Filename

6910215