InSAR Co-registration Accuracy Assessment Based on Misregistration Value

Based on estimated offset between the corresponding points in the master and the slave image by spectral diversity algorithm, a new indicator misregistration value is proposed to assess registration accuracy. After error analysis is carried out, the new indicator is compared with conventional indicators. Its advantage is the feasibility to assess the registration accuracy in both directions. According to the three indicators, comparison results of several co-registration algorithms are obtained. Airborne X-band interferometric data are used to validate the new indicator.