Marine target motion estimation method based on multi-source SAR satellites
A motion estimation and target technology, applied in satellite radio beacon positioning system, radio wave reflection/re-radiation, measurement devices, etc., can solve the problem that it is difficult to accurately extract sea target motion information from a single SAR image, and achieve improved correlation Correct rate, improved accuracy, and easy fusion effects
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[0030] Below in conjunction with accompanying drawing, the present invention is described in more detail:
[0031] Such as figure 1 Shown, the present invention is concretely realized as follows:
[0032] Step 1: Target detection and parameter extraction
[0033] The invention uses the CFAR algorithm to segment the SAR image, obtains the center of mass position of the target and the corresponding target slice through morphological processing, and then obtains the geographic location of the target according to the coordinate conversion between the image space and the object space. According to the target slice, the main axis direction of the target is extracted through Radon transformation, and the ambiguous heading is estimated (there may be 180-degree direction ambiguity, which is further eliminated in step 3). According to the direction of the main axis of the target, the target slice is rotated to the horizontal direction, energy accumulation projection is performed, a ce...
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