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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Polarimetric Differential SAR Interferometry: First Results With Ground-Based Measurements
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Polarimetric Differential SAR Interferometry: First Results With Ground-Based Measurements

机译：极化差分SAR干涉测量法：基于地面的测量的首个结果

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摘要

The Remote Sensing Laboratory of the Universitat Politecnica de Catalunya carried out a one-year measuring campaign in the village of Sallent, northeastern Spain, using a polarimetric ground-based synthetic aperture radar (SAR) sensor. The objective was to study the subsidence phenomenon induced by the salt mining activity conducted in this area up to the middle of the last century. Zero-Baseline polarimetric SAR (PolSAR) data were gathered at X-band in nine different days, from June 2006 to March 2007. In this letter, the problem of extracting subsidence information from fully PolSAR acquisitions for the retrieval of high-quality deformation maps is addressed. After compensating for the atmospheric artifacts caused by troposphere changes, the linear component of the deformation process is estimated separately for each polarization channel with the Coherent Pixels Technique (CPT). Afterward, a novel polarimetric approach mixing the differential-phase information of each polarization channel is proposed. The results obtained in the two cases are quantitatively compared, and the advantages provided by the polarimetric acquisitions are finally stressed.
机译：加泰罗尼亚理工大学的遥感实验室在西班牙东北部的Sallent村开展了为期一年的测量活动，使用极化地面合成孔径雷达（SAR）传感器。目的是研究直到上个世纪中叶在该地区进行的盐矿开采活动引起的沉降现象。从2006年6月至2007年3月的9个不同日期，在X波段收集了零基线极化SAR（PolSAR）数据。在这封信中，存在从完全PolSAR采集中提取沉降信息以检索高质量变形图的问题。已解决。在补偿了由对流层变化引起的大气伪影之后，使用相干像素技术（CPT）为每个极化通道分别估计了变形过程的线性分量。之后，提出了一种新的极化方法，该方法混合了每个极化通道的差分相位信息。定量比较了两种情况下获得的结果，并最终强调了极化采集所提供的优势。

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