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This paper proposes a novel registration method for optical and SAR images which is based on straight line features and mutual information. Firstly, different edge detectors are employed to detect the line segments in both optical and SAR images respectively. Then, through the Hough transform and a straight line fitting and filtration method, the main straight lines of each image are extracted and...
Based on the analysis of the range migration characteristic of bistatic forward-looking SAR, a geometry-based Doppler ambiguity resolver is proposed in this paper. This method estimates the Doppler centroid first using edge detection and least square fitting techniques. Combined with the baseband Doppler centroid estimation method, it can more rapidly resolve the Doppler ambiguity number. Besides,...
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