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- Title
Wide-field Circular SAR Imaging Studies Based on Ground-based Experiments.
- Authors
Demirci, S.; Yigit, E.; Yilmaz, B.; Ozdemir, C.
- Abstract
Circular synthetic aperture radar (CSAR) imaging systems collect data by moving the radar antenna along a circular path around the scene. These spotlight systems provide very high resolution imagery due to 360° observation of scenes. Nevertheless, a major challenge inhibiting successful imaging is encountered when the scene's dimension is a significant fraction of the scanning path's radius (i.e., wide-field scenario). In this case, layover effects become more significant and may severely degrade image quality. In this paper, various simulation and real imaging experiments of wide-field CSAR are studied to characterize these effects. A ground-based, short-range scanning system (small LOS distance and small scanning radius) is assumed and two-dimensional (2D) monostatic CSAR imaging of isotropic point targets as well as a real complex target is analyzed to characterize image defocusing effects.The results demonstrate difficulties in obtaining successful 2D representations of targets from a single-pass CSAR data.
- Subjects
IMAGING systems; RADAR antennas; IMAGE quality in synthetic aperture radar; SCANNING systems; COMPUTER simulation
- Publication
PIERS Proceedings, 2013, p863
- ISSN
1559-9450
- Publication type
Article