| Summary: | 碩士 === 朝陽科技大學 === 營建工程系碩士班 === 96 === Traditionally﹐precise leveling and Global Positioning System﹐GPS﹐etc. are employed to monitor the topography of a specified area. The technique of interferometric synthetic aperture radar﹐InSAR﹐only needing two or more synthetic aperture radarimages ﹐SAR﹐with two spatially or temporally separated antennas can generate digital elevation model﹐DEM﹐with the advantages of efficiency, high accuracy, all-weather and large area. In this study, the test region in the Jiufen area is a small town in north Taiwan. With comparing the land surface deformation trend with differential interferometric synthetic aperture radar﹐DInSAR﹐and field test results, we find that there are common displacement trends. It proves DInSAR is the feasible method for monitoring the topography. With the experiment results﹐the technique of DInSAR can be used to select these areas with highly potential ground movements for further investigations.
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