نتایج جستجو برای: روش d insar

تعداد نتایج: 945808  

2014
Wu Zhu Qin Zhang XiaoLi Ding Chaoying Zhao Chengsheng Yang Feifei Qu Wei Qu

Considering the limitations related to the landslide monitoring by Interferometric Synthetic Aperture Radar (InSAR) technique, the method of integration of Globe Positioning System (GPS) with Corner Reflector Interferometric SAR (CR-InSAR) techniques is proposed in this paper. Firstly, deformation in radar line-of-slight (LOS) direction is optimized by introducing the GPS-measured height and at...

2008
Xiao-li Ding Zhi-wei Li Jian-jun Zhu Guang-cai Feng Jiang-ping Long

Interferometric Synthetic Aperture Radar (InSAR) is a powerful technology for observing the Earth surface, especially for mapping the Earth's topography and deformations. InSAR measurements are however often significantly affected by the atmosphere as the radar signals propagate through the atmosphere whose state varies both in space and in time. Great efforts have been made in recent years to ...

2010
E. Pichelli R. Ferretti D. Cimini D. Perissin M. Montopoli F. S. Marzano

The local distribution of water vapour in the urban area of Rome has been studied using both a high resolution mesoscale model (MM5) and Earth Remote Sensing-1 (ERS-1) satellite radar data. Interferometric Synthetic Aperture Radar (InSAR) techniques, after the removal of all other geometric effects, estimate excess path length variation between two different SAR acquisitions (Atmospheric Phase ...

2003
V. JANSSEN L. GE C. RIZOS

Interferometric Synthetic Aperture Radar (InSAR) techniques have been recognised as an ideal tool for many ground deformation monitoring applications. However, the spatially and temporally variable delay of the radar signal propagating through the atmosphere is a major limitation to accuracy. The dominant factor to be considered is the tropospheric heterogeneity, which can lead to misinterpreta...

2010
Antje Thiele Erich Cadario Stefan Hinz

The new generation of space-borne high resolution SAR sensors such as TerraSAR-X, SAR-Lupe or CosmoSkyMed provides SAR images of 1-3m spatial resolution or even below in special spotlight modes. Naturally, the development of methods to automatically derive detailed cartographic information of both rural and urban areas from this kind of data is a major issue driven by these missions. Since SAR ...

Journal: :Remote Sensing 2016
Jun Hu Qijie Wang Zhiwei Li Rong Zhao Qian Sun

Ground deformation contains important information that can be exploited to look into the dynamics of a geothermal system. In recent years, InSAR has manifested its strong power in the monitoring of ground deformation. In this paper, a multi-temporal InSAR algorithm, WLS InSAR, is employed to monitor and characterize the Yangbajing geothermal field in Tibet, China, using 51 ENVISAT/ASAR images a...

2005
Tim J. Wright Zhong Lu Chuck Wicks

The Mw 7.9, Denali fault earthquake (DFE) is the largest continental strike-slip earthquake to occur since the development of Interferometric Synthetic Aperture Radar (InSAR). We use five interferograms, constructed using radar images from the Canadian Radarsat-1 satellite, to map the surface deformation at the western end of the fault rupture. Additional geodetic data are provided by displacem...

2009
D. Derauw

In Very High Resolution (VHR) Synthesis Aperture Radar (SAR) context, very fine and accurate georeferencing and geoprojection processes are required. Both operations are only applicable if accurate local heights are known. 3D information may be derived from SAR interferometry (InSAR), But in VHR context, InSAR reveals to be inaccurate mostly due to phase unwrapping problems and to phase/height ...

2003
Maurizio Santoro Jan Askne Patrik B. G. Dammert

Multi-temporal sets of ERS-1/2 SAR interferometric (InSAR) phase have been evaluated at several test sites in Europe for tree height estimation. Atmospheric artefacts affected a large number of image pairs. These were generally well compensated in case of large-scale artefacts over small forests, whereas for large forests their effect could only be assessed. Hence, the amount of pairs utilizabl...

Journal: :EURASIP J. Adv. Sig. Proc. 2005
Gerhard Krieger Konstantinos Papathanassiou Shane Cloude

We investigate multichannel imaging radar systems employing coherent combinations of polarimetry and interferometry (PolInSAR). Such systems are well suited for the extraction of bioand geophysical parameters by evaluating the combined scattering from surfaces and volumes. This combination leads to several important differences between the design of Pol-InSAR sensors and conventional single pol...

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