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Acceleration of Synthetic Aperture Radar (SAR) Algorithms using Field Programmable Gate Arrays (FPGAs) (Abstract Only)

Published: 22 February 2015 Publication History

Abstract

Algorithms for radar signal processing, such as Synthetic Aperture Radar (SAR) are computationally intensive and require considerable execution time on a general purpose processor. Reconfigurable logic can be used to off-load the primary computational kernel onto a custom computing machine in order to reduce execution time by an order of magnitude as compared to kernel execution on a general purpose processor. Specifically, Field Programmable Gate Arrays (FPGAs) can be used to house hardware-based custom implementations of these kernels to speed up these applications. In this paper, we demonstrate a methodology for algorithm acceleration. We used SAR as a case study to illustrate the tremendous potential for algorithm acceleration offered by FPGAs. Initially, we profiled the SAR algorithm and implemented a homomorphic filter using a hardware implementation of the natural logarithm. Experimental results show an average speed-up of 188 when using the FPGA-based hardware accelerator as opposed to using a software implementation running on a typical general purpose processor.

References

[1]
A. Pelkonen, K. Masselos, and M. Cupk, "System-level modeling of dynamically reconfigurable hardware with systemc," in 10th Reconfigurable Architectures Workshop, 2003.
[2]
N. Alachiotis and A. Stamatakis, "Efficient floating-point logarithm unit for fpgas," in Parallel Distributed Processing, Workshops and Phd Forum (IPDPSW), 2010 IEEE International Symposium on, April 2010, pp. 1--8.
[3]
B. Lee and K. Lever, "Logarithmic number system and floating-point implementations of a well-conditioned rls estimation algorithm on fpga," in Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on, vol. 1, Nov 2003, pp. 109--113 Vol.1.
[4]
B. Lee and N. Burgess, "Some results on taylor-series function approximation on fpga," in Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on, vol. 2, Nov 2003, pp. 2198--2202 Vol.2.
[5]
R. Lundgreen, D. Thompson, D. Arnold, D. Long, and G. Miner, "Initial results of a low-cost sar: Yinsar," in Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International, vol. 7, 2000, pp. 3045--3047 vol.7.

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  1. Acceleration of Synthetic Aperture Radar (SAR) Algorithms using Field Programmable Gate Arrays (FPGAs) (Abstract Only)

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    cover image ACM Conferences
    FPGA '15: Proceedings of the 2015 ACM/SIGDA International Symposium on Field-Programmable Gate Arrays
    February 2015
    292 pages
    ISBN:9781450333153
    DOI:10.1145/2684746
    Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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    New York, NY, United States

    Publication History

    Published: 22 February 2015

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    Author Tags

    1. floating point
    2. fpga
    3. homomorphic
    4. logarithmic
    5. synthetic aperture radar

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    • Army Research Office

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    FPGA '15 Paper Acceptance Rate 20 of 102 submissions, 20%;
    Overall Acceptance Rate 125 of 627 submissions, 20%

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