We consider a monostatic synthetic aperture radar system traversing an arbitrary trajectory on a non-flat
topography. We present a novel edge detection method applicable directly to SAR received signal. Our method
first filters the received data, and then backprojects. The filter is designed to detect the edges of the scene in
different directions at each pixel reconstructed. The method is computationally efficient and may be implemented
with the computational complexity of the fast-backprojection algorithms. We present numerical experiments to
demonstrate the performance of our method.
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