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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Generation of Accurate DEMs Using DInSAR Methodology (TopoDInSAR)
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Generation of Accurate DEMs Using DInSAR Methodology (TopoDInSAR)

机译：使用DInSAR方法（TopoDInSAR）生成精确的DEM

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摘要

This letter presents a new methodology for the generation of digital elevation models (DEMs) by means of differential interferometry (DInSAR) algorithms with no need for classical phase unwrapping. During the last years, several advanced DInSAR proposals have been published, most of them based on a linear deformation adjustment together with topographic error estimation. In those cases, the input data are composed of a set of differential interferograms with different temporal gaps. Consequently, interferograms are affected by severe problems of temporal decorrelation, and the estimation of the topography can only be performed over coherent pixels, which are sparsely spread over the image. The proposal presented in this letter consists in the usage of a set of highly coherent topographic interferograms as input data for an advanced DInSAR algorithm. Then, using classical linear model adjustment, a detailed DEM of the observed area is estimated. This methodology is presented jointly with results obtained by processing real data acquired by European Remote Sensing satellites 1 and 2
机译：这封信提出了一种新的方法，用于通过差分干涉测量（DInSAR）算法生成数字高程模型（DEM），而无需进行经典的相位展开。在过去的几年中，已经发布了一些先进的DInSAR建议，其中大多数是基于线性变形调整和地形误差估计的。在那些情况下，输入数据由一组具有不同时间间隙的差分干涉图组成。因此，干涉图受到时间去相关的严重问题的影响，并且只能对稀疏分布在图像上的相干像素执行拓扑估计。在这封信中提出的建议包括使用一组高度相干的地形干涉图作为高级DInSAR算法的输入数据。然后，使用经典线性模型调整，估计观察区域的详细DEM。与通过处理欧洲遥感卫星1和2采集的实际数据获得的结果一起介绍了此方法

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