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A new algorithm for complex-valued SAR images compression is proposed in this paper. A complex-valued SAR image consists of a magnitude part and a phase part, and in this paper the two parts are compressed separately. For the magnitude part, it is compressed by JPGE2000 algorithm, while for the phase part, it is compressed by the proposed adaptive quantization method. The phase quantization is adaptive...
The Radon transform is widely used to detect ship wakes in synthetic aperture radar (SAR) images. Ship wakes have linear features in the image, and correspond to peaks and troughs in the Radon transform. Therefore, the ship wakes can be detected by searching for peaks and troughs in the Radon transform. In this paper, a novel algorithm based on the Radon transform is presented to detect ship wakes...
This paper presents an improved step transform subaperture approach for spotlight Synthetic Aperture Radar (SAR). The step transform algorithm will obtain desired high azimuth resolution only if the linear FM rate and the sampling rate of the SAR signal satisfy a certain constraint. In order to obtain a high quality image, the minimum entropy autofocus using an adaptive order polynomial model is extended...
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