نتایج جستجو برای: terrasar
تعداد نتایج: 870 فیلتر نتایج به سال:
Most high resolution optical images from space need ground control information (GCP) before an orthorectification can be performed. The very high geometric accuracy of geocoded data of the TerraSAR-X satellite has been shown in several investigations. This precision has been reached fully automatically without any GCP and is due to good sensor calibration, high accuracy of satellite position an...
World wide Alpine glaciers suffer from global warming, resulting in a sophisticated melting process affecting the mass balances and the volume of these frozen water resources. In this paper the preliminary results of a joint international glaciological project are presented, which is aimed to make synergetic use of high resolution remote sensing data from different parts of the electromagnetic ...
Beijing is one of the most water-stressed cities in the world. Due to over-exploitation of groundwater, the Beijing region has been suffering from land subsidence since 1935. In this study, the Small Baseline InSAR technique has been employed to process Envisat ASAR images acquired between 2003 and 2010 and TerraSAR-X stripmap images collected from 2010 to 2011 to investigate land subsidence in...
With the launch of the German TerraSAR-X system in June 2007, a new generation of high-resolution spaceborne Synthetic Aperture Radar (SAR) data is available; which facilitates a spatially and thematically detailed SAR scene analysis. In fact, the high resolution of TerraSAR-X enables scene on land cover, such as urban areas, deserts, forests and fields, to be accurately mapped. Among the sever...
The Florida Everglades is the largest subtropical wetland system in the United States and, as with subtropical and tropical wetlands elsewhere, has been threatened by severe environmental stresses. It is very important to monitor such wetlands to inform management on the status of these fragile ecosystems. This study aims to examine the applicability of TerraSAR-X quadruple polarimetric (quad-p...
One relevant application of SAR remote sensing is the generation of Digital Surface Models (DSMs) of the Earth's surface, thanks to the SAR independence from logistic constraints on the ground, illumination and weather conditions. Starting from SAR imagery two different approaches can be used to generate DSMs: the well known interferometric and the promising radargrammetric one. The goal of thi...
High resolution TerraSAR-X/TanDEM-X as well as Sentinel-1 remote sensing Synthetic Aperture Radar (SAR) data are used to determine and monitor the waterline in the Wadden Sea. In this very unique and dynamic coastal region in the southeastern North Sea, tidal flats extend several kilometers away from the coast during low tide with features like tidal inlets and sand banks. Under the influence o...
A Technical Survey of Various Methodologies for Landslide Susceptibility Mapping and Hazard Analysis
The effect of landslide and its consequences always impact negatively on the inhabitants of a certain region or zone. The overall damage of socioeconomic structure and loss of human lives always a matter of concern. Numerous approaches of landslide susceptibility mapping, hazard analysis have been developed and in most cases remote sensing, Geographical Information System (GIS) remains the core...
At the German Aerospace Center, DLR, an automatic and operational traffic processor for the TerraSAR-X ground segment is currently under development. The processor comprises the detection of moving objects on ground, their correct assignment to the road network, and the estimation of their velocities. Since traffic flow parameters are required for describing dynamics and efficiency of transport...
A two-component fully automated flood monitoring system is described and evaluated. This is a result of combining two individual flood services that are currently under development at DLR’s (German Aerospace Center) Center for Satellite based Crisis Information (ZKI) to rapidly support disaster management activities. A first-phase monitoring component of the system systematically detects potent...
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