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Because of the influence of large range walk and geometrical distortion, traditional synthetic aperture radar (SAR) imaging algorithms, such as range doppler (RD) etc., cannot be used for three-dimensional (3-D) forward looking SAR (F-SAR) imaging directly. In this paper, we first derive the chirp scaling algorithm (CSA) for 3-D F-SAR. Next, we analyze the geometrical distortion analytically and provide...
A forward-looking 3-D SAR imaging model using an unequally spaced array is proposed in this paper. Firstly, based on the problems that a real equally spaced array suffers, like heavy calculation, the couple between antenna elements, an unequally spaced array with optimized element positions, is obtained by Simulated Annealing. Compared with several different types of arrays, the unequally spaced array...
Super resolution (SR) technique can produce a high-resolution (HR) image from a set of low-resolution (LR) images with complementary information. This paper proposes a modified iterative back projection (IBP) method for SAR image resolution enhancement. In this method, a SR image is assumed and modification which contains the different high frequency information of LR images is back projected to it...
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