Aiming at the vehicle target detection problem of multi-polarization SAR image under the terrain backgrounds, the
global CFAR detection by dual-polarized 16-bit data is proposed, which effectively reduces the influence of terrain
clutter on detection. In addition, through the analysis of terrain flatness and the screening of built-up areas, the target
detection area is reduced, and the interference of the complex terrain and the densely populated area to the target
detection is further reduced, and the reliability of the target detection is greatly improved.
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