SAR interferometry processing technology has developed for a few decades, and it is widely used in many geoscience applications. Nevertheless, conventional SAR interferometry processing methods do not suit for space-borne spotlight SAR interferometry processing. Based on co-registration with Doppler centroid frequency estimation and joint phase unwrapping method, a novel space-borne spotlight SAR interferometry processing method is proposed. It is validated by TerraSAR-X spotlight SAR data. Compared with SRTM data, the results show a clear improvement in DEM construction.
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digital elevation models,frequency estimation,image registration,radar imaging,radar interferometry,remote sensing by radar,spaceborne radar,synthetic aperture radar,DEM construction,Doppler centroid frequency estimation,SRTM data,TerraSAR-X spotlight SAR data,complex SAR images,joint phase unwrapping method,space-borne spotlight SAR interferometry processing technology,Doppler centroid frequency,Phase unwrapping,SAR Interferometry,Spotlight SAR
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