2002 年 41 巻 6 号 p. 27-33
Geometric distortions make the image analysis of monitored SAR data difficult. DEM (Digital Elevation Model) has been used to simulate SAR images to interpret the SAR images of hilly areas. In this study, we integrated geographic features to the DEM and make the simulated SAR image useful for both hilly and flat areas. Modification of DEM was done by overlaying a topographical map (1/25000) on the corresponding DEM, and then slightly modifying the altitude of the geographical features such as rivers. Those geographical features became visible in a SAR image simulated from the modified DEM and gave useful clues for interpreting observed SAR images. Such simulated SAR images are applicable for planning the strategy of SAR data analysis, training of SAR image interpretation, co-registration of SAR image and DEM in 2 pass Differential interferometry, and identification of ground control points.