Sliding Spotlight Mode Imaging with GF-3 Spaceborne SAR Sensor

Sliding Spotlight Mode Imaging with GF-3 Spaceborne SAR Sensor

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Synthetic aperture radar (SAR) sliding spotlight work mode can achieve high turbo air m3f72-3-n resolutions and wide swath (HRWS) simultaneously by steering the radar antenna beam.This paper aims to obtain well focused images using sliding spotlight mode with the Chinese Gaofen-3 SAR sensor.We proposed an integrated imaging scheme with sliding spotlight echoes.

In the imaging scheme, the two-step approach is applied to the spaceborne sliding spotlight SAR imaging algorithm, followed by the Doppler parameter estimation algorithm.The azimuth spectral folding phenomenon is overcome by the two-step approach.The results demonstrate a high Doppler parameter estimation accuracy.

The proposed imaging process is accurate arcade smokey the bear belt and highly efficient for sliding spotlight SAR mode.