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RSS FeedsSensors, Vol. 19, Pages 2764: Azimuth Sidelobes Suppression Using Multi-Azimuth Angle Synthetic Aperture Radar Images (Sensors)

 
 

20 june 2019 02:00:24

 
Sensors, Vol. 19, Pages 2764: Azimuth Sidelobes Suppression Using Multi-Azimuth Angle Synthetic Aperture Radar Images (Sensors)
 




A novel method is proposed for azimuth sidelobes suppression using multi-pass squinted (MPS) synthetic aperture radar (SAR) data. For MPS SAR, the radar observes the scene with different squint angles and heights on each pass. The MPS SAR mode acquisition geometry is given first. Then, 2D signals are focused and the images are registered to the master image. Based on the new signal model, elevation processing and incoherent addition are introduced in detail, which are the main parts for azimuth sidelobes suppression. Moreover, parameter design criteria in incoherent addition are derived for the best performance. With the proposed parameter optimization step, the new method has a prominent azimuth sidelobes suppression effect with a slightly better azimuth resolution, as verified by experimental results on both simulated point targets and TerraSAR-X data.


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49 viewsCategory: Chemistry, Physics
 
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