FPGA-based hardware acceleration of electromagnetic wave reverse time migration imaging

Wenzheng Zhu; Lei Kuang

doi:10.1117/12.2615764

15 February 2022 FPGA-based hardware acceleration of electromagnetic wave reverse time migration imaging

Wenzheng Zhu, Lei Kuang

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121662Q (2022) https://doi.org/10.1117/12.2615764
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

Electromagnetic wave reverse time migration (RTM) imaging based on finite difference time domain (FDTD) method is widely used in geological exploration. It can accurately attribute the wavefield to its true subsurface spatial location when dealing with steeply dipping structures and complex velocity models. However, the forward and backward propagation processes of RTM imaging require recording wavefield information at each time step, which causes a large number of buffer accesses to degrade the overall calculation speed. This computationally and data intensive features limits its application in more scenarios. Therefore, this paper develops the FDTD prototype accelerator based on FPGA to accelerate the forward and backward propagation process of reverse time migration imaging, and realize the hardware circuit of cross-correlation imaging conditions. The experimental results show that the forward propagation process of FPGA at a clock frequency of 100MHz is 17.384 times faster than the PC using 3.6GHz CPU, and the backward propagation process is 18.371 times faster in comparison.

Citation Download Citation

Wenzheng Zhu and Lei Kuang "FPGA-based hardware acceleration of electromagnetic wave reverse time migration imaging", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121662Q (15 February 2022); https://doi.org/10.1117/12.2615764

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Finite-difference time-domain method

Wave propagation

Field programmable gate arrays

Magnetism

Electromagnetic radiation

Image processing

Receivers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years