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提出并实现一种基于加权最小二乘的低相干SAR影像对精配准新方法。该方法借助一幅与主、辅影像相干性都较高的第3幅影像来完成低相干SAR影像对的初步配准,利用加权最小二乘法求出二者间的坐标映射函数,从而实现低相干SAR影像对的高精度亚像素级配准。采用ERS-1/2实际数据的配准试验,验证该方法可以提高低相干SAR影像对的干涉图质量,提高二者之间的相干性和控制点的配准精度,改善低相干SAR影像对的配准效果,在一定程度上解决PS InSAR技术中低相干SAR影像对的配准问题。 更多还原

【Abstract】 A new method for fine registration of a pair of low-coherent SAR images in PS InSAR was presented and implemented.This method completed original registration of a pair of low-coherent SAR images with the help of the third image that had higher coherence with the both master and slave image,then calculated the coordination mapping function between them using weighted least square method to achieve high precise sub-pixel level registration of the pair of low-coherent SAR images.A registration expe... 更多还原