نتایج جستجو برای: روش ‏D-InSAR

تعداد نتایج: 945808  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

تکنیک تداخل سنجی راداری(d-insar) به عنوان یک روش مناسب جهت آشکار سازی تغییرات بوجود آمده در سطح زمین می باشد. محاسبه جابجایی های رخ داده در سطح زمین با استفاده از تکنیک d-insar شامل قابلیت های منحصر بفردی در ابعاد هزینه، زمان و دقت نسبت به تکنیکهای دیگر سنجش است. در مطالعه حاضر نرخ و دامنه فرونشست در سطح دشت مرند، با استفاده از تکنیک d-insar در بازه زمانی خرداد 1383- بهمن 1389 محاسبه و تعیین گش...

ژورنال: :مهندسی و مدیریت آبخیز 2014
کورش شیرانی عبدالله سیف محمد شریفی کیا

پرتاب ماهواره‏ های دارای سنجنده‏ های راداری با گشودگی ترکیبی (sar)، به ­منظور کاربردهای تداخل‏ سنجی تفاضلی، فرصت جدیدی برای آشکارسازی و پایش تغییر شکل‏ های بطئی، کند و حتی سریع زمین فراهم آورده است. این پژوهش با هدف مقایسه و ارزیابی کارایی دو سنجنده راداری در شناسایی، پایش و تهیه نقشه ثبت زمین‏ لغزش در ارتفاعات دنای زاگرس واقع در جنوب استان اصفهان با استفاده از تکنیک تداخل‏ سنجی تفاضلی تصاویر م...

2014
Simon M. Plank John Singer Kurosch Thuro Christian Minet

Differential radar interferometry (D-InSAR) is a powerful remote sensing technique for detection and deformation monitoring of landslides. However, as a consequence of the radar specific imaging geometry spatial distortions, such as the layover and shadowing effect, occur in the radar image, which have a negative impact on the suitability of the radar images for D-InSAR applications. Therefore ...

2003
Hsing-Chung Chang Ming-han Chen Lijiong Qin Linlin Ge Chris Rizos

Ground subsidence can be caused by both natural and human-induced activities. In this paper, a radar remote sensing technique named Differential Interferometric SAR (D-InSAR) is introduced as means of monitoring the ground deformation caused by mining activities. D-InSAR and current geodetic technologies, such as GPS, are complementary in monitoring ground subsidence due to underground mining a...

Journal: :Remote Sensing 2013
Peraya Tantianuparp Xuguo Shi Lu Zhang Timo Balz Mingsheng Liao

In the areas with steep topography and vulnerable geological condition, landslide deformation monitoring is an important task for risk assessment and management. Differential Synthetic-Aperture Radar interferometry (D-InSAR) and Persistent Scatterer Interferometry (PS-InSAR) are two advanced SAR Interferometry techniques for detection, analysis and monitoring of slow moving landslides. The tech...

2015
Akademia Baru M. Marghany

The paper has demonstrated InSAR phase unwrapping using Hybrid Genetic Algorithm (GHA). The three dimensional phase unwrapping is performed using three-dimensional best-path avoiding singularity loops (3DBPASL) algorithm. Then phase matching is implemented with 3DBPASL using Hybrid Genetic Algorithm (GHA). Further, the combination between GHA and 3DBPASL is used to eliminate the phase decorrela...

2013
Maged Marghany John van Genderen

In the last two decades, scientists have developed a powerful technique to measure the millimeterscale of the Earth ̳s surface deformation by comparing complex synthetic aperture radar (SAR) data that were acquired a few days or a few years apart. This technique is known as interferometric synthetic aperture radar (InSAR). The paper is focused on simulation of volume deformation of coastal éros...

Journal: :IEEE Trans. Geoscience and Remote Sensing 1998
Karim E. Mattar Paris W. Vachon Dirk Geudtner A. Laurence Gray Ian G. Cumming Melinda Brugman

Five ascending and four descending ERS-1/2 tandem-mode synthetic aperture radar (SAR) interferometry (InSAR) data pairs with useful scene coherence are used to measure the surface flow field of an alpine glacier in the Canadian Rocky Mountains. The topographic component of the interferogram phase is calculated by using a digital elevation model (DEM) of the terrain and precise orbit data to rec...

2017
Antonio Pepe Fabiana Calò

Synthetic Aperture RADAR Interferometry (InSAR) provides a unique tool for the quantitative measurement of the Earth’s surface deformations induced by a variety of natural (such as volcanic eruptions, landslides and earthquakes) and anthropogenic (e.g., ground-water extraction in highly-urbanized areas, deterioration of buildings and public facilities) processes. In this framework, use of InSAR...

2000
Lado W. Kenyi Viktor Kaufmann

Synthetic Aperture Radar (SAR) systems normally record both the amplitude and the phase of the backscattered echoes. However, the phase of a single backscattered image is of no use and therefore, conventionally the amplitude or intensity image is usually provided to the user. But on the contrary, the phase difference of two backscattered SAR images of the same area on the ground taken at slight...

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