연구실적 · 국외전문학술지
Architecture Exploration of a Backprojection Algorithm for Real-Time Video SAR
DOI
PDF초록
This paper explores novel architectures for fast backprojection based video synthetic aperture radar (BP-VISAR) with multiple GPUs. The video SAR frame rate is analyzed for non-overlapped and overlapped aperture modes. For the parallelization of the backprojection process, a processing data unit is defined as the phase history data or range profile data from partial synthetic-apertures divided from the full resolution target data. Considering whether full-aperture processing is performed and range compression or backprojection are parallelized on a GPU basis, we propose six distinct architectures, each having a single-stream pipeline with a single GPU. The performance of these architectures is evaluated in both non-overlapped and overlapped modes. The efficiency of the BP-VISAR architecture with sub-aperture processing in the overlapped mode is accelerated further by filling the processing gap from the idling GPU resources with multi-stream based backprojection on multiple GPUs. The frame rate of the proposed BP-VISAR architecture with sub-aperture processing is scalable with the number of GPU devices for large pixel resolution. It can generate 4096 × 4096 video SAR frames of 0.5 m cross-range resolution in 23.0 Hz on a single GPU and 73.5 Hz on quad GPUs.
사이트 원문 표기
Seokwon Lee, Inmo Ban, Myeongjin Lee, Yunho Jung, Wookyung Lee, “Architecture Exploration of a Backprojection Algorithm for Real-Time Video SAR”, Sensors, vol. 21, no. 24, pp. 8258, 2021
BibTeX
@article{Lee_2021,
title={Architecture Exploration of a Backprojection Algorithm for Real-Time Video SAR},
volume={21},
ISSN={1424-8220},
url={http://dx.doi.org/10.3390/s21248258},
DOI={10.3390/s21248258},
number={24},
journal={Sensors},
publisher={MDPI AG},
author={Lee, Seokwon and Ban, Inmo and Lee, Myeongjin and Jung, Yunho and Lee, Wookyung},
year={2021},
month=Dec,
pages={8258}
}