A high-resolution scanning synthetic aperture radar precise focusing processing method and device
A synthetic aperture radar, precise focusing technology, applied in measurement devices, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve problems such as the inability to directly apply the full-aperture ScanSAR data processing algorithm, and achieve the effect of improving image quality
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[0039] In the embodiment of the present invention, the ScanSAR data of each sub-swath is divided into two-dimensional sub-apertures, and DRE estimation is performed on each two-dimensional sub-aperture; the ScanSAR data of the entire survey swath is subjected to range-to-space DRE estimation; The azimuth error estimation is performed on the ScanSAR data after the range space-varying DRE estimation; the full-aperture phase error correction and azimuth compression are performed on the ScanSAR data of each sub-swath.
[0040] Wherein, the ScanSAR data is ScanSAR data compressed in the range direction but uncompressed in the azimuth direction.
[0041] After performing full-aperture phase error correction and azimuth compression on the ScanSAR data of each sub-swath to obtain the images of each sub-swath, the method further includes: performing image stitching on the images of each sub-swath to obtain a focused ScanSAR image .
[0042] The implementation of the technical solution...
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