Polarimetric and Interferometric SAR Imagery Registration Based on Hybrid Triangle

A registration algorithm which hybridizes the block grids and Delaunay-triangle is proposed to enhance the domestic airborne POLINSAR data accuracy.Firstly,the highest and sec-highest coherence values are used to refine the reliable grid points based on the image blocks.Secondly,the registration error is limited by Delaunay-triangles.Then,the offset model coefficient is solved.The final experiment shows that the proposed scheme increases the POLINSAR images registration.