Image and Signal Processing Methods

Acceleration of synthetic aperture radar imaging via subaperture chirp-scaling approach based on heterogeneous graphics-processing-unit–central-processing-unit architecture

[+] Author Affiliations
Yabo Liu, Yunkai Deng, Robert Wang

Chinese Academy of Sciences, Institute of Electronics, Space Microwave Remote Sensing System Department, Beijing 100190, China

Hongyu Li, Zheng Wu

Chinese Academy of Sciences, Institute of Electronics, Space Microwave Remote Sensing System Department, Beijing 100190, China

University of the Chinese Academy of Sciences, Beijing 100039, China

J. Appl. Remote Sens. 9(1), 095083 (Apr 15, 2015). doi:10.1117/1.JRS.9.095083
History: Received June 9, 2014; Accepted March 19, 2015
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Abstract.  For large-scale synthetic aperture radar (SAR) data, it is difficult to achieve SAR imagery in a timely manner using traditional imaging algorithms. Subaperture architecture is introduced to a chirp-scaling algorithm to process large-scale SAR data. By means of the subaperture partition, the real data can be processed in parallel based on heterogeneous graphics processing unit–central processing unit architecture. The principle of subaperture partition is not only discussed, but also the closed form of the overlap rate for a subaperture combination under the mode is first theoretically presented, which provides a foundation for airborne real-time data processing. Finally, simulation and real data experiments validate the proposed approach.

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Citation

Yabo Liu ; Hongyu Li ; Zheng Wu ; Yunkai Deng and Robert Wang
"Acceleration of synthetic aperture radar imaging via subaperture chirp-scaling approach based on heterogeneous graphics-processing-unit–central-processing-unit architecture", J. Appl. Remote Sens. 9(1), 095083 (Apr 15, 2015). ; http://dx.doi.org/10.1117/1.JRS.9.095083


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