نتایج جستجو برای: روش d insar

تعداد نتایج: 945808  

2007
Guoqing Sun Dawei Liu Jon Ranson Benjamin Koetz

The height of scattering phase center retrieved from InSAR data is considered to be correlated with tree height and the spatial structure of the forest stand. Though some researchers have used simple backscattering models to estimate tree height from the height of scattering center, the effect of forest spatial structure on InSAR data is not well understood yet. A three-dimensional coherent rad...

2009
Timo Balz Jan Dirk Wegner Alexander Schunert Kang Liu Uwe Soergel Mingsheng Liao

Synthetic aperture radar (SAR) Persistent Scatterer Interferometry (PS-InSAR) is an extension of the Differential Interferometry (D-InSAR). Using a large data stack consisting of a time-series of SAR images of the same area, stable reflectors which persist over a long period of time, the so-called Persistent Scatterers (PS), are determined and the phase shifts of these PS over time are measured...

2002
U. Stilla

The automatic 3-D reconstruction of buildings for the generation of city models is of great interest for different tasks. Besides the classical photogrammetric approaches to determine object heights indirectly, range sensors like laser (LIDAR) and interferometric SAR (InSAR) play an important role since recent years. From both sensors images are produced with a ground resolution better than a m...

2017
O. Ku

Tropospheric delays are considered to be one of the main performance limitations for Interferometric Synthetic Aperture Radar technology when applied to ground deformation monitoring. In this study, we evaluate the performance of ERA-Interim global atmospheric reanalysis on estimating the tropospheric delay on Sentinel-1 InSAR observations. The results are validated by four D-InSAR interferogra...

Journal: :IEEE Access 2021

Surface deformation of mining area caused by subsidence can be divided into three stages: the initial stage, active stage and decline stage. At D-InSAR technology could easily affected incoherence large-gradient deformation, thus leading to failure conventional in monitoring subsidence.In order solve problem, this paper developed a 3D surface prediction method integrating dynamic Boltzmann mode...

2009
Weibao Zou Yan Li Zhilin Li Xiaoli Ding

Interferometric Synthetic Aperture Radar (InSAR) is a new measurement technology, making use of the phase information contained in the Synthetic Aperture Radar (SAR) images. InSAR has been recognized as a potential tool for the generation of digital elevation models (DEMs) and the measurement of ground surface deformations. However, many critical factors affect the quality of InSAR data and lim...

Journal: :Remote Sensing 2022

The 8 August 2017 Ms 7.0 Jiuzhaigou earthquake was generated in the transition zone between Tazang fault, Huya and Minjiang all being part of East Kunlun fault system. In this study, two pairs SAR (synthetic aperture radar) data from Sentinel-1 satellite were used to derive surface displacement observations along line-of-sight (LOS) directions using differential interferometric (D-InSAR) method...

2016
Kui Yang Li Yan Guoman Huang Chu Chen Zhengpeng Wu

Synthetic Aperture Radar Interferometry (InSAR) techniques are increasingly applied for monitoring land subsidence. The advantages of InSAR include high accuracy and the ability to cover large areas; nevertheless, research validating the use of InSAR on building deformation is limited. In this paper, we test the monitoring capability of the InSAR in experiments using two landmark buildings; the...

2010
Meng Wei David Sandwell Yuri Fialko Roger Bilham

[1] Radar interferometry (InSAR), field measurements and creepmeters reveal surface slip on multiple faults in the Imperial Valley triggered by the main shock of the 4 April 2010 El Mayor‐Cucapah Mw 7.2 earthquake. Co‐seismic offsets occurred on the San Andreas, Superstition Hills, Imperial, Elmore Ranch, Wienert, Coyote Creek, Elsinore, Yuha, and several minor faults near the town of Ocotillo ...

Journal: :Remote Sensing 2015
Hongdong Fan Xiaoxiong Gao Junkai Yang Kazhong Deng Yang Yu

An approach to study the mechanism of mining-induced subsidence, using a combination of phase-stacking and sub-pixel offset-tracking methods, is reported. In this method, land subsidence with a small deformation gradient was calculated using time-series differential interferometric synthetic aperture radar (D-InSAR) data, whereas areas with greater subsidence were calculated by a sub-pixel offs...

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