Highly Accurate SLC Image Coregistration in InSAR Processing Technique

In this paper, we present a linear and nonlinear joint algorithm for the InSAR image coregistration which could be used in highly decorrelated real scenes. First, a coarse coregistration is performed by using an improved consistency testing method which is based on integrating correlation coregistration and max-spectrum image coregistration. Second, we choose control points, and then select different sampling period by using the non-linear method based on coregistration quality parameter curved surface. Our initial results suggest that this approach can not only obtain highly accurate coregistration but also satisfy the requirement of the accurate coregistration for projects.