Special Section on High-Performance Computing in Applied Remote Sensing: Part 3

Graphics processor unit accelerated finite-difference time domain method for electromagnetic scattering from one-dimensional large scale rough soil surface at low grazing incidence

[+] Author Affiliations
Chungang Jia

Xidian University, School of Physics and Optoelectronic Engineering, Department of Radio Physics, South 2 Taibai Road, Xi’an 710071, China

Lixin Guo

Xidian University, School of Physics and Optoelectronic Engineering, Department of Radio Physics, South 2 Taibai Road, Xi’an 710071, China

Ke Li

Xidian University, School of Physics and Optoelectronic Engineering, Department of Radio Physics, South 2 Taibai Road, Xi’an 710071, China

J. Appl. Remote Sens. 8(1), 084795 (Nov 05, 2014). doi:10.1117/1.JRS.8.084795
History: Received June 26, 2014; Revised September 2, 2014; Accepted October 7, 2014
Text Size: A A A

Abstract.  The graphics processor unit-based finite-difference time domain (FDTD) algorithm is applied to study the electromagnetic (EM) scattering from one-dimensional (1-D) large scale rough soil surface at a low grazing incident angle. The FDTD lattices are truncated by a uniaxial perfectly matched layer, and finite difference equations are employed in the whole computation domain for convenient parallelization. Using Compute Unified Device Architecture technology, we achieve significant speedup factors. Also, shared memory and asynchronous transfer are used to further improve the speedup factors. Our method is validated by comparing the numerical results with those obtained by using a CPU. The influences of the incident angle, correlation length l, and root-mean-square height δ on the bistatic scattering coefficient of a 1-D large scale rough surface at low grazing incidence are also discussed.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Chungang Jia ; Lixin Guo and Ke Li
"Graphics processor unit accelerated finite-difference time domain method for electromagnetic scattering from one-dimensional large scale rough soil surface at low grazing incidence", J. Appl. Remote Sens. 8(1), 084795 (Nov 05, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.084795


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.