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In this paper, the authors propose sector scan ground-based synthetic aperture radar (GB-SAR) technique for real-time monitoring of wide-ranging landslides. The non-linear movement of the antenna which moves along a sector to form a wide scanning area makes the azimuth properties complicated. Geometric model of the antenna movement is established to derive the slant range expression. Further, the...
This paper analyzes an innovative geographically referenced (GR) stripmap mode for the airborne synthetic aperture radar (SAR). In the GR stripmap SAR, the antenna beam illuminates orthogonally with the ground strip, which is not parallel to the SAR trajectory. Benefiting from the GR stripmap mode, the effective observation swath can be enlarged comparing to what can be realized by the traditional...
A novel framework is proposed for mitigating azimuth ambiguities in spaceborne stripmap synthetic aperture radar (SAR) images. The azimuth ambiguities in SAR images are localized by using a local mean SAR image, SAR system parameters, and a defined metric derived from azimuth antenna pattern. The defined metric helps isolate targets lying at locations of ambiguities. The mechanism for restoration...
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