method for manufacturing a digital elevation model using a SAR data

摘要

PURPOSE: A digital elevation model manufacturing method using SAR(Synthetic Aperture Radar) data is provided to simplify a complex processing progress by selecting a target area for using the SAR data. CONSTITUTION: Main SAR data and sub SAR data are matched(S102). Sub images are rearranged by using a matching result. A phase difference between the main SAR data and the sub SAR data is calculated. Interference is filtered by using the calculated interference(S103). DEM(Digital Elevation Model) is manufactured in order to extract a displacement index through a phase unwrapping method which changes phase information into an elevation value(S104, S105).