标题： Sentinel-1升轨和降轨DInSAR数据的对比分析：Cazzaso案例研究 显示英文标题

标题： Compared analysis of DInSAR data from ascending and descending orbits of Sentinel-1: the Cazzaso case study

摘要： 差分合成孔径雷达干涉测量（DInSAR）通过提供地表相干目标（持久散射体）的位移时间序列，能够分析大面积区域，识别地面位移并研究其长时间演化。 在这项工作中，我们实现了一种创新方法，该方法完全基于视线方向的位移时间序列，适用于相关持久散射体位移的情况。 我们确定了持久散射体最终位置的轨迹，并自动计算潜在三维位移幅度的下限。 我们展示了利用Sentinel-1数据调查意大利阿尔卑斯山区弗留利威尼斯朱利亚大区卡扎索村（一个受活动滑坡影响的丘陵村庄）地面稳定性的结果。 使用SPINUA算法处理了Sentinel-1从升轨和降轨获取的SAR数据集。 对位移时间序列进行了分析，以解决相位展开问题并计算位移场。 显示英文摘要

摘要： Differential SAR interferometry (DInSAR), by providing displacement time series over coherent objects on the Earth's surface (persistent scatterers), allows to analyze wide areas, identify ground displacements, and study their evolution at large times. In this work we implement an innovative approach that relies exclusively on line-of-sight displacement time series, applicable to cases of correlated persistent-scatterer displacements. We identify the locus of the final positions of the persistent scatterers and automatically calculate the lower bound of the magnitude of the potential three-dimensional displacements. We present the results obtained by using Sentinel-1 data for investigating the ground stability of the hilly village Cazzaso located in the Italian Alps (Friuli Venezia Giulia region) in an area affected by an active landslide. SAR datasets acquired by Sentinel-1 from both ascending and descending orbits were processed using the SPINUA algorithm. Displacement time series were analysed in order to solve phase unwrapping issues and displacement field calculation.