High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation
High-resolution synthetic aperture radar presents a significant challenge to imaging algorithms and computing power. Slide spotlight is an important mode that has both high resolution and wide azimuth swath. Generally, in the slide spotlight mode, the performance of conventional frequency domain ima...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
China Science Publishing & Media Ltd. (CSPM)
2017-08-01
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| Series: | Leida xuebao |
| Subjects: | |
| Online Access: | http://radars.ie.ac.cn/fileup/HTML/R16053.htm |
| _version_ | 1797428082860097536 |
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| author | Tang Jiangwen Deng Yunkai Wang Robert Zhao Shuo Li Ning |
| author_facet | Tang Jiangwen Deng Yunkai Wang Robert Zhao Shuo Li Ning |
| author_sort | Tang Jiangwen |
| collection | DOAJ |
| description | High-resolution synthetic aperture radar presents a significant challenge to imaging algorithms and computing power. Slide spotlight is an important mode that has both high resolution and wide azimuth swath. Generally, in the slide spotlight mode, the performance of conventional frequency domain imaging algorithms degrades because of orbit curvature, the time-variant azimuth chirp rate, and other factors. We adopt the Back-Projection (BP) algorithm in this study to counteract this limitation. We also propose a CPU/GPU heterogeneous BP algorithm to deal with the high computing complexity O(N3) of the BP algorithm. This heterogeneous BP algorithm makes full use of computing resources and accelerates imaging progress, and the design of a scheduling thread improves the flexibility of the algorithm. |
| first_indexed | 2024-03-09T08:54:05Z |
| format | Article |
| id | doaj.art-4876834a57da4dcab8828e97adaae868 |
| institution | Directory Open Access Journal |
| issn | 2095-283X 2095-283X |
| language | English |
| last_indexed | 2024-03-09T08:54:05Z |
| publishDate | 2017-08-01 |
| publisher | China Science Publishing & Media Ltd. (CSPM) |
| record_format | Article |
| series | Leida xuebao |
| spelling | doaj.art-4876834a57da4dcab8828e97adaae8682023-12-02T13:39:11ZengChina Science Publishing & Media Ltd. (CSPM)Leida xuebao2095-283X2095-283X2017-08-016436837510.12000/JR16053High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel ImplementationTang Jiangwen0Deng Yunkai1Wang Robert2Zhao Shuo3Li Ning4①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100049, China)①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(University of Chinese Academy of Sciences, Beijing 100049, China)①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)High-resolution synthetic aperture radar presents a significant challenge to imaging algorithms and computing power. Slide spotlight is an important mode that has both high resolution and wide azimuth swath. Generally, in the slide spotlight mode, the performance of conventional frequency domain imaging algorithms degrades because of orbit curvature, the time-variant azimuth chirp rate, and other factors. We adopt the Back-Projection (BP) algorithm in this study to counteract this limitation. We also propose a CPU/GPU heterogeneous BP algorithm to deal with the high computing complexity O(N3) of the BP algorithm. This heterogeneous BP algorithm makes full use of computing resources and accelerates imaging progress, and the design of a scheduling thread improves the flexibility of the algorithm.http://radars.ie.ac.cn/fileup/HTML/R16053.htmSynthetic Aperture Radar (SAR)Slide spotlightBack-Projection (BP) algorithmHeterogeneous parallel computing |
| spellingShingle | Tang Jiangwen Deng Yunkai Wang Robert Zhao Shuo Li Ning High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation Leida xuebao Synthetic Aperture Radar (SAR) Slide spotlight Back-Projection (BP) algorithm Heterogeneous parallel computing |
| title | High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation |
| title_full | High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation |
| title_fullStr | High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation |
| title_full_unstemmed | High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation |
| title_short | High-resolution Slide Spotlight SAR Imaging by BP Algorithm and Heterogeneous Parallel Implementation |
| title_sort | high resolution slide spotlight sar imaging by bp algorithm and heterogeneous parallel implementation |
| topic | Synthetic Aperture Radar (SAR) Slide spotlight Back-Projection (BP) algorithm Heterogeneous parallel computing |
| url | http://radars.ie.ac.cn/fileup/HTML/R16053.htm |
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