연구실적 · 국외전문학술지
FPGA Implementation of the Range-Doppler Algorithm for Real-Time Synthetic Aperture Radar Imaging
DOI
PDF초록
In this paper, we propose a range-Doppler algorithm (RDA)-based synthetic aperture radar (SAR) processor for real-time SAR imaging and present FPGA-based implementation results. The processing steps for the RDA include range compression, range cell migration correction (RCMC), and azimuth compression. A matched filtering unit (MFU) and an RCMC processing unit (RPU) are required for real-time processing. Therefore, the proposed RDA-based SAR processor contains an MFU that uses the mixed-radix multi-path delay commutator (MRMDC) FFT and an RPU. The MFU reduces the memory requirements by applying a decimation-in-frequency (DIF) FFT and decimation-in-time (DIT) IFFT. The RPU provides a variable tap size and variable interpolation kernel. In addition, the MFU and RPU are designed to enable parallel processing of four 32-bit which are transferred via a 128-bit AXI bus. The proposed RDA-based SAR processor was designed using Verilog-HDL and implemented in a Xilinx UltraScale+ MPSoC FPGA device. After comparing the execution time taken by the proposed SAR processor with that taken by an ARM cortex-A53 microprocessor, we observed a 85-fold speedup for a 2048 × 2048 pixel image. A performance evaluation based on related studies indicated that the proposed processor achieved an execution time that was approximately 6.5 times less than those of previous FPGA implementations of RDA processors.
사이트 원문 표기
Yeongung Choi, Dongmin Jeong, Myeongjin Lee, Wookyung Lee, Yunho Jung, “FPGA Implementation of the Range-Doppler Algorithm for Real-Time Synthetic Aperture Radar Imaging”, Electronics, vol. 10, no. 17, pp. 2133, 2021
BibTeX
@article{Choi_2021,
title={FPGA Implementation of the Range-Doppler Algorithm for Real-Time Synthetic Aperture Radar Imaging},
volume={10},
ISSN={2079-9292},
url={http://dx.doi.org/10.3390/electronics10172133},
DOI={10.3390/electronics10172133},
number={17},
journal={Electronics},
publisher={MDPI AG},
author={Choi, Yeongung and Jeong, Dongmin and Lee, Myeongjin and Lee, Wookyung and Jung, Yunho},
year={2021},
month=Sept,
pages={2133}
}