The Adaptive Streaming SAR Back-Projection Algorithm Based on Half-Precision in GPU Article Swipe
Yihao Xu
,
Zhuo Zhang
,
Longyong Chen
,
Zhenhua Li
,
Ling Yang
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/electronics11182807
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/electronics11182807
The back-projection (BP) algorithm is completely accurate in the imaging principle, but the computational complexity is extremely high. The single-precision arithmetic used in the traditional graphics processing unit (GPU) acceleration scheme has low throughput and its usage of the video memory is large. An adaptive asynchronous streaming scheme for the BP algorithm based on half-precision is proposed in this study, and then it is extended to the fast back-projection (FBP) algorithm. In this scheme, the adaptive loss factors selection strategy ensures the dynamic range of data, the asynchronous streaming structure ensures the efficiency of large scene imaging, and the mixed-precision data processing ensures the imaging quality. The schemes proposed in this paper are compared with BP, FBP, and fast factorized back-projection (FFBP) algorithms of single-precision in GPU. The experimental results show that the two half-precision acceleration schemes in this paper reduce the video memory usage to 74% and 59% of the single-precision schemes with guaranteed image quality. The efficiency improvements of the proposed schemes are almost one and 0.5 times greater than that of the corresponding single-precision scheme, and the advantage can be more obvious when dealing with large computations.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/electronics11182807
- https://www.mdpi.com/2079-9292/11/18/2807/pdf?version=1662542412
- OA Status
- gold
- Cited By
- 1
- References
- 28
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4296407086
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4296407086Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/electronics11182807Digital Object Identifier
- Title
-
The Adaptive Streaming SAR Back-Projection Algorithm Based on Half-Precision in GPUWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2022Year of publication
- Publication date
-
2022-09-06Full publication date if available
- Authors
-
Yihao Xu, Zhuo Zhang, Longyong Chen, Zhenhua Li, Ling YangList of authors in order
- Landing page
-
https://doi.org/10.3390/electronics11182807Publisher landing page
- PDF URL
-
https://www.mdpi.com/2079-9292/11/18/2807/pdf?version=1662542412Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://www.mdpi.com/2079-9292/11/18/2807/pdf?version=1662542412Direct OA link when available
- Concepts
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Computer science, Graphics processing unit, Asynchronous communication, Algorithm, Acceleration, Projection (relational algebra), Real-time computing, Parallel computing, Physics, Computer network, Classical mechanicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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1Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1Per-year citation counts (last 5 years)
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28Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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