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首页> 外文期刊>International journal of remote sensing >Long term landslide monitoring by ground-based synthetic aperture radar interferometer
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Long term landslide monitoring by ground-based synthetic aperture radar interferometer

机译：地面合成孔径雷达干涉仪对滑坡的长期监测

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摘要

A ground-based synthetic aperture radar (GB SAR) interferometer was employed to detect small terrain movements which occurred over long periods of time on a landslide hazard zone in the Citrin Valley in northern Italy. Three measurement campaigns were carried out from September 2003 to September 2004. The radar instrumentation was carefully re-installed at each campaign on the same observation point in order to avoid geometric decorrelation. Because of the global loss of coherence due to the long temporal separation between the observations, the retrieved displacements are limited to a number of very coherent points throughout the surveyed scenario. Radar data are locally compared with data provided by a global positioning system (GPS) network installed on the area interested by the landslide. Digital elevation model, photographic images, interferometric and GPS data are integrated within GIS environment providing a very effective geophysical knowledge tool.
机译：地面合成孔径雷达（GB SAR）干涉仪用于检测在意大利北部Citrin谷的滑坡灾害带上长期发生的小地形运动。从2003年9月到2004年9月进行了3次测量活动。为避免发生几何解相关，在每个活动中都仔细地将雷达仪器重新安装在同一观察点上。由于观测值之间的时间间隔太长，导致全局连贯性丧失，因此在整个调查场景中，检索到的位移仅限于许多非常连贯的点。将雷达数据与安装在滑坡感兴趣区域的全球定位系统（GPS）网络提供的数据进行本地比较。数字高程模型，摄影图像，干涉仪和GPS数据集成在GIS环境中，提供了非常有效的地球物理知识工具。

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