نتایج جستجو برای: روش d insar

تعداد نتایج: 945808  

2010
Linlin Ge Hsing-Chung Chang Chinatsu Yonezawa Chris Rizos

Synthetic Aperture Radar Interferometry (InSAR) has been recognised as a well-suited tool for topographic mapping and ground deformation monitoring applications. However, the spatially and temporally variable tropospheric delay represents a major limitation to InSAR applications. On the other hand, it has become feasible to derive tropospheric corrections from continuous GPS for InSAR due to th...

Journal: :Remote Sensing 2017
Qingli Luo Guoqing Zhou Daniele Perissin

Synthetic Aperture Radar Interferometry (InSAR), widely applied for the monitoring of land subsidence, has the advantage of high accuracy and wide coverage. High-resolution SAR data offers a chance to reveal impressive details of large-scale man-made linear features (LMLFs) with Multi-temporal InSAR (MT-InSAR) analysis. Despite these advantages, research validating high-resolution MT-InSAR resu...

ژورنال: :برنامه ریزی و آمایش فضا 2013
محمدرضا شریفی کیا

فرونشست پدیده ای مرفولوژیکی است که تحت تأثیر حرکت فرو رو زمین پدید می آید. علت رخداد این پدیده ممکن است متأثر از عوامل طبیعی و انسانی باشد. در ایران به ویژه در محدودة مورد مطالعه، رویداد آن اغلب متوجه فعالیت های انسانی و به ویژه بهره برداری بی رویه از منابع آب زیرزمینی است. محدودة مورد مطالعه در ناحیة بیابانی ایران واقع شده و به سبب خشکی محیط و نبود منابع آب سطحی، حیات و فعالیت های اقتصادی آن ب...

2007
John Dawson Paul Tregoning

[1] We assessed the accuracy of earthquake source parameters inverted from simulated Interferometric Synthetic Aperture Radar (InSAR) data. Using focal mechanisms of Australian earthquakes (1959 to the present), we simulated synthetic two-pass InSAR observations with realistic spatial noise derived from the characteristics of actual ERS-2 and ENVISAT InSAR data observed over Australia. The prec...

2014
J. Hu Q. J. Wang Z. W. Li R. A. Xie X. Q. Zhang Q. Sun Li Q. Sun

In this paper, synthetic aperture radar (SAR) data from ENVISAT ASAR ascending, descending and ALOS PALSAR ascending orbits are collected to investigate the coseismic displacements of the Mw 6.4 earthquake occurred in Gaize, Tibet on January 9, 2008 and the Mw 5.9 aftershock on January 16, 2008. Two interferometric phase analysis techniques, i.e., D-InSAR and multi-aperture InSAR, are employed ...

2011
Jessica A. Reeves Rosemary Knight Howard A. Zebker Willem A. Schreüder Piyush Shanker Agram Tom R. Lauknes

[1] In the San Luis Valley (SLV), Colorado legislation passed in 2004 requires that hydraulic head levels in the confined aquifer system stay within the range experienced in the years 1978–2000. While some measurements of hydraulic head exist, greater spatial and temporal sampling would be very valuable in understanding the behavior of the system. Interferometric synthetic aperture radar (InSAR...

2002
K. Clint Slatton Larry Teng Melba Crawford W. Braker

Accurate determination of topography is required for a wide range of civilian and governmental applications. For example, modeling flood extent, flow velocity, and sediment transport associated with river networks requires bare-surface elevations with sub-meter height accuracy and spatial resolutions better than 10 meters. Strip-map interferometric synthetic aperture radar (INSAR) sensors have ...

2007
Kirsi Karila Mika Karjalainen Juha Hyyppä Veikko Saaranen

Advanced INSAR techniques using stable targets on the ground, such as buildings, have been successfully applied to deformation studies in city areas. However, in some cases high-quality reference measurements have not been available and the validations of the INSAR results have been based on data that probably is not adequate for this purpose. In 2005 the Finnish Geodetic Institute (FGI) establ...

2008
D. W. Liu Y. Du G. Q. Sun W. Z. Yan

To investigate the effect of forest spatial structure on SAR interferometry (InSAR) data requires an electromagnetic scattering model capable of expressing radar observation in terms of parameters describing forest spatial structure. In this paper, we propose an electromagnetic scattering model for mixed-species forest which includes the coherent effect of forest structure and preserves phase i...

2015
Brent MINCHEW Mark SIMONS Scott HENSLEY Helgi BJÖRNSSON Finnur PÁLSSON

We infer the horizontal velocity fields of the ice caps Langjökull and Hofsjökull, central Iceland, using repeat-pass interferometric synthetic aperture radar (InSAR). NASA’s uninhabited aerial vehicle synthetic aperture radar (UAVSAR) acquired airborne InSAR data from multiple vantage points during the early melt season in June 2012. We develop a Bayesian approach for inferring threedimensiona...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید