| 使用InSAR 建立DEM的试验研究 |
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| 引用本文： | 刘国祥,丁晓利,李志林,陈永奇,李志伟.使用InSAR 建立DEM的试验研究[J].测绘学报,2001,30(4):336-342. |
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| 作者姓名： | 刘国祥 丁晓利 李志林 陈永奇 李志伟 |
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| 作者单位： | 香港理工大学土地测量与地理资讯学系, |
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| 基金项目： | 香港理工大学校科研和教改项目;G-9025; |
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| 摘 要： | 重点考察使用星载InSAR技术建立DEM的关键数据处理过程和精度情况。首先介绍InSAR的基本原理和所涉及的关键干涉雷达数据处理技术，然后对欧空局的2颗卫星ERS－1／2以串接飞行方式分别于1996年3月18日和19日对香港地区成像所获取的2幅SAR复数影像作了干涉处理和分析，并生成了DEM，最后以外部DEM作参考标准，对干涉DEM的精度作了评价，并分析了其潜在的制约因素。
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| 关 键 词： | 合成孔径雷达干涉 数字高程模型 数据处理 精度 DEM |
| 文章编号： | 1001-1595(2001)04-0336-07 |
Experimental Investigation on DEM Generation through InSAR |
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| LIU Guo xiang,DING Xiao li,LI Zhi lin,CHEN Yong qi,LI Zhi wei.Experimental Investigation on DEM Generation through InSAR[J].Acta Geodaetica et Cartographica Sinica,2001,30(4):336-342. |
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| Authors: | LIU Guo xiang DING Xiao li LI Zhi lin CHEN Yong qi LI Zhi wei |
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| Abstract: | 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. |
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| Keywords: | In SAR Digital Elevation Model data processing precision |
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