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

Yabo Liu; Hongyu Li; Zheng Wu; Yunkai Deng; Robert Wang

doi:10.1117/1.JRS.9.095083

15 April 2015 Acceleration of synthetic aperture radar imaging via subaperture chirp-scaling approach based on heterogeneous graphics-processing-unit–central-processing-unit architecture

Yabo Liu, Hongyu Li, Zheng Wu, Yunkai Deng, Robert Wang

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 9, Issue 1, 095083 (April 2015). https://doi.org/10.1117/1.JRS.9.095083

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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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," Journal of Applied Remote Sensing 9(1), 095083 (15 April 2015). https://doi.org/10.1117/1.JRS.9.095083

Published: 15 April 2015

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KEYWORDS

Synthetic aperture radar

Data processing

Radar imaging

Image quality

Doppler effect

Computer simulations

Radar

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