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《Acta Geodaetica Et Cartographic Sinica》 2001-04
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Experimental Investigation on DEM Generation through InSAR

LIU Guo xiang, DING Xiao li, LI Zhi lin, CHEN Yong qi, LI Zhi wei (Dept of Land Surveying and Geo Informatics, The Hong Kong Polytechnic University, Hong Kong,China)  
This paper mainly investigates the key data processing procedures involved in generating Digital Elevation Model (DEM) through Synthetic Aperture Radar Interferometry (InSAR), and evaluates the precision of derived DEM. First, the basic principles and key radar data processing techniques of InSAR are summarized as a notation system of subsequent experimental results. Second, the interferometric processing and analyses are carried out for the test area of Yuen Long in Hong Kong using one couple of ERS 1/2 tandem SAR images acquired on March 18, 1996, and on March 19, 1996, respectively. Finally, a portion of the interferometrically derived DEM is selected and compared with the independent reference DEM. The evaluation on precision is made along with analysis of its potential limitation factors.
【Fund】: 香港理工大学研究设备基金资助项目 ( G-90 2 5 ) ;; 香港理工大学研究基金资助项目 ( G-V 747);; 测绘遥感信息工程国家重点 实验室开放研究基金资助项目 ( WK L( 0 0 ) 0 10 3)
【CateGory Index】: P237
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