نتایج جستجو برای: سنجنده etm
تعداد نتایج: 3873 فیلتر نتایج به سال:
A C++ language-based software tool for retrieving land surface temperature (LST) from the data of Landsat TM/ ETM+ band6 is developed. It has two main functional modules: (1) Three methods to compute the ground emissivity based on land use/cover classification image, NDVI image and the ratio values of vegetation and bare ground and (2) Converting digital numbers (DNs) from TM/ETM+ band6 to LST....
In Beijing, some crop field is similar to urbanized area in spectral space of ETM+ image, and this is an obstacle to extract urbanized area of Beijing from ETM+ image. Furthermore, classical texture such as variance can not improve the seperability of such two landcovers. This article proposed a skewness based framework to extract the profile of urbanized area, while skewness was seldom applied...
تحقیقات نشان می دهد که تکنیک سنجش از دور تکنیک بسیار کارآمدی در بررسی مناطق خشک و مطالعه تغییرات آن محسوب می گردد. هدف از این مطالعه پهنه بندی رخساره های کویری پلایای ابرقو با استفاده از داده های سنجنده های etm+ و aster مربوط به سال های 2002 و 2006 می باشد. پس از تصحیحات هندسی داده های aster نسبت به etm+ (تصویر به تصویر) با تعیین نقاط زمینی بر روی تصاویر و تصحیحات رادیومتریک بر روی تصاویر، ارزش...
-This is the second paper of the series on atmospheric correction of ETM+ land surface imagery. In the first paper, a new algorithm that corrects heterogeneous aerosol scattering and surface adjacency effects was presented. In this study, our objectives are to 1) evaluate the accuracy of this new atmospheric correction algorithm using ground radiometric measurements; 2) apply this algorithm to ...
Flocculation has an important impact on particle trapping in estuarine turbidity maximum (ETM) through associated increases in particle settling velocity. To quantify the importance of the flocculation processes, a size-resolved flocculation model is implemented into an ocean circulation model to simulate fine-grained particle trapping in an ETM. The model resolves the particle size from robust...
Numerical simulation of the formation of an Estuarine Turbidity Maximum (ETM) using a constant erosion rate with a stipulated condition that erosion only occurs at tidal accelerating phases was successfully implemented in a three-dimensional hydrodynamic model for the York River. Eight slackwater surveys were carried out during 2001 and 2002 to develop ground truths with measurements at 25 stat...
[This retracts the article DOI: 10.3892/etm.2013.887.].
Abstract Pharmacokinetic (PK) models are used to extract physiological information from dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) sequences. Some of the most common employed in clinical practice, such as standard Tofts model (STM) or extended (ETM), do not account for passive delivery agent (CA) through diffusion. In this work, we introduce a diffusive term based on concept...
The analysis of rapid environment changes requires orbital sensors with high frequency of data acquisition to minimize cloud interference in the study of dynamic processes such as Amazon tropical deforestation. Moreover, a medium to high spatial resolution data is required due to the nature and complexity of variables involved in the process. In this paper we describe a multiresolution multitem...
با توجه به نقش تعیین کننده موقعیت شکستگی ها و گسل ها در بوجود آمدن و ماندگاری ذخایر هیدروکربنی و همچنین اهمیت این موضوع در فرآیند حفر چاه های اکتشافی، هدف این پایان نامه استخراج خطواره های مورد نظر در نقشه های زمین شناسی به منظور اکتشاف منابع و ذخایر هیدروکربنی (نفت و گاز) از تصاویر اپتیکی و راداری و تلفیق نتایج حاصل از آن است. منطقه مورد مطالعه، در محدوده کلات نادری در شمال شرقی استان خراسان ر...
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