نتایج جستجو برای: نقشۀ ماهوارۀ insar

تعداد نتایج: 3499  

2005
D. Amarsaikhan

The aim of this study is to use the original and other ancillary derived features extracted from multitemporal spaceborne interferometric synthetic aperture radar (InSAR) data sets for land cover mapping. For the actual land cover mapping, supervised (statistical maximum likelihood classification) and unsupervised (isodata clustering) classifications have been performed using a) the original In...

2002
Zhong Lu Charles Wicks John Power Daniel Dzurisin Wayne Thatcher Timothy Masterlark

Interferometric synthetic aperture radar (InSAR) imaging is a recently developed geodetic technique capable of measuring ground-surface deformation with centimeter to subcentimeter vertical precision and spatial resolution of tens-of-meter over a relatively large region (~10 km). The spatial distribution of surface deformation data, derived from InSAR images, enables the construction of detaile...

2008
Y. Xia H. Kaufmann X. F. Ge X. D. Yang

To monitor and detect the events of landslide, rock-fall along the banks of the Yangtze River in the Three Gorges area, the differential INSAR technique with corner reflectors (CR-Based INSAR) might be more effective than the conventional geological, and discrete GPS measurement techniques, conventional D-INSAR, as well as nature persistent scatterers method. Unfortunately, in most places of th...

1999
Michael Seymour Ian Cumming

Interferometric synthetic aperture radar (InSAR) processing relies on phase unwrapping to convert interferometric phase to topographic height. Phase unwrapping is a di cult non-linear process that is still the subject of on-going research. Rather than processing the complete phase image to extract a digital elevation model (DEM), we use existing coarse DEMs as an integral part of the InSAR algo...

2011
V. Singhroy J. Li F. Charboneau G. Pavlic

In this paper, we present the results of several case studies using InSAR techniques from high resolution RADARSAT to monitor active landslides triggered by earthquakes and other geomorphic processes. Our results have shown that our InSAR results were used that facilitate mitigation efforts along strategic transportation and energy corridors as well as reconstruction efforts in earthquake damag...

2015
D.P.S. Bekaert R. J. Walters

a r t i c l e i n f o Keywords: Atmosphere Tropospheric noise Corrections Phase-based Spectrometers Weather models InSAR State-of-the-art TRAIN Correcting for tropospheric delays is one of the largest challenges facing the interferometric synthetic aperture radar (InSAR) community. Spatial and temporal variations in temperature, pressure, and relative humidity create tropospheric signals in InS...

1998
David Small Paolo Pasquali Francesco Holecz Erich Meier Daniel Nüesch

Interferometric synthetic aperture radar (InSAR) has become a broad field encompassing the use of both airborne and spaceborne sensors operating at a range of wavelengths and resolutions. This paper derives general conclusions from experiences at the Remote Sensing Laboratories of the University of Zürich with a variety of airborne and spaceborne InSAR sensors. Results from multiple systems ope...

Journal: :Remote Sensing 2016
Mi Chen Roberto Tomás Zhenhong Li Mahdi Motagh Tao Li Leyin Hu Huili Gong Xiaojuan Li Jun Yu Xulong Gong

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...

2001
Linlin Ge Chris Rizos Shaowei Han Howard Zebker

Compared to opencut mining, underground coal mining is more common in Australia due to its lesser impact on the environment. Although there are several underground mining methods, such as the longwall, pillar, bord, and miniwall, longwall mining is the most commonly used method due to its high efficiency. However, longwall mining does lead to significant ground subsidence. Mining subsidence is ...

Journal: :Remote Sensing 2017
Stefano Puliti Svein Solberg Erik Næsset Terje Gobakken Eliakimu Zahabu Ernest Mauya Rogers Ernest Malimbwi

The use of Interferometric Synthetic Aperture Radar (InSAR) data has great potential for monitoring large scale forest above ground biomass (AGB) in the tropics due to the increased ability to retrieve 3D information even under cloud cover. To date; results in tropical forests have been inconsistent and further knowledge on the accuracy of models linking AGB and InSAR height data is crucial for...

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