Extended PGA for range migration algorithms

Extended PGA for range migration algorithms

The phase gradient autofocus (PGA) algorithm is extended to work for synthetic aperture radar (SAR) spotlight images processed with range migration (w-k) algorithms. Several pre-processing steps are proposed for aligning the range-compressed phase-history data needed for successful autofocusing of t...

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Veröffentlicht in:IEEE transactions on aerospace and electronic systems 2006-04, Vol.42 (2), p.478-488
Hauptverfasser: Van Rossum, W.L., Otten, M.P.G., Van Bree, R.J.P.
Format: Artikel
Sprache:eng
Schlagworte:
Aerospace
Aircraft components
Algorithms
Alignment
Azimuth
Data security
Electronic systems
Electronics packaging
Error correction
Image resolution
Image restoration
Migration
Phase estimation
Safety
Scattering
Synthetic aperture radar
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Beschreibung
Zusammenfassung:The phase gradient autofocus (PGA) algorithm is extended to work for synthetic aperture radar (SAR) spotlight images processed with range migration (w-k) algorithms. Several pre-processing steps are proposed for aligning the range-compressed phase-history data needed for successful autofocusing of the data. The proposed algorithm gave good results for both data with large point targets and data without point targets.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2006.1642565