A Prior 2-D Autofocus Algorithm With Ground Cartesian BP Imaging for Curved Trajectory SAR

Due to the complexity of the trajectory, the curved trajectory SAR signal is seriously two-dimensional (2-D) space-variant. The ground Cartesian back-projection (GCBP) algorithm is a fast time-domain algorithm without interpolation, which can meet the imaging accuracy of curved trajectory SAR. Howev...

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Veröffentlicht in:	IEEE journal of selected topics in applied earth observations and remote sensing 2024, Vol.17, p.2422-2436
Hauptverfasser:	Lou, Yishan, Lin, Hao, Li, Ning, Xing, Mengdao, Wang, Junrui, Wu, Zhixin
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Cartesian coordinates Cell migration Curved trajectory Error analysis Error correction ground cartesian back-projection (GCBP) Image resolution Imaging Imaging techniques index grid division algorithm Interpolation Phase error prior structure Radar imaging Signal processing algorithms Signal resolution spectrum alignment Synthetic aperture radar synthetic aperture radar (SAR) Trajectories Trajectory two-dimensional (2-D) phase error
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