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Spotlight SAR is an efficiency way to obtain high resolution radar imagery. The non-stability of the aircraft motion during the long synthetic aperture time can make the imagery suffer the sever defocus, and there is phase error in the range direction in the high resolution SAR system. This paper presents a novel signal processing method to get high definition resolution spotlight SAR imagery, which...
Spotlight SAR is an efficiency way to obtain high resolution radar imagery. The classic polar format algorithm (PFA) is the widely used method for spotlight SAR imagery reconstruction, but PFA need two dimension interpolation operation in SAR imaging, which has influence on the imaging precision and computation efficiency. This paper presents a novel polar format Algorithm based on two dimension CZT...
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