نتایج جستجو برای: dem model calibration

تعداد نتایج: 2159419  

Journal: :IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2021

The TanDEM-X mission, formed by the satellite in cooperation with its almost identical twin TerraSAR-X (TSX), has mainly been designed to acquire bistatic synthetic aperture radar (SAR) images of Earth. Initiated 2010, primary mission objectives were generate a global digital elevation model (DEM) perform scientific measurements and explore novel SAR techniques. Up present day, all these have c...

احمدی زاده, مجتبی, اصلانی, مصطفی, فضل اولی, رامین,

The appropriate use of a conceptual rainfall-runoff model depends on how well its parameters are calibrated. Generally, rainfall-runoff models deal with numerous parameters that cannot be measured directly and should be estimated through optimization tools. The purpose of the optimization approach is to finalize the best set of parameters associated with a given calibration data set that optimi...

2001
MICHAEL CRAMER

Within the last five years extensive research was done using integrated GPS/inertial systems for the direct georeferencing of airborne sensors for high-end applications. Pushed by the development and practical use of digital sensor systems, originally started with laser scanner systems and followed by imaging multi-line pushbroom scanners, direct georeferencing offers the only way for an effici...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Thierry Toutin

Digital elevatio models (DEMs) were generated from a stereo pair using the Advanced Spaceborne Thermal Emission and Reflection Radiomete (ASTER) backward and nadir images with 27.7 intersection angles ( = 0 6) over a high relief area of the Canadian Rocky Mountains. Fifteen ground control points were a good compromise to compute the stereo-bundle adjustment when they are only 25–30 m precise to...

Journal: :Earth Surface Processes and Landforms 2022

The application of structure from motion (SfM) photogrammetry for digital elevation model (DEM) and orthophoto generation visible imagery enjoys ever-growing popularity in geomorphological research. Photogrammetry experts, however, urge that a rigorous approach is prerequisite reliable results—a requirement may conflict with real-world survey. We present method unites the two disciplines, using...

A. Mahdavi, M. Taheri,

Building performance simulation is being increasingly deployed beyond the building design phase to support efficient building operation. Specifically, the predictive feature of the simulation-assisted building systems control strategy provides distinct advantages in view of building systems with high latency and inertia. Such advantages can be exploited only if model predictions can be relied u...

2009
Zafar MAHMOOD Kazuyoshi IWASHITA

We study the influence of particle shape on the shear band formation in quasistatic granular media in biaxial compression test using two-dimensional Distinct Element Method (DEM). Elliptical-shaped particles are used to study the influence of particle shape. We also report an experimental verification to check the ability of DEM to model elliptical particles created by the clustering technique....

Journal: :Remote Sensing 2012
Sonia M. Ortiz Johannes Breidenbach Ralf Knuth Gerald Kändler

Climate change is a factor that largely contributes to the increase of forest areas affected by natural damages. Therefore, the development of methodologies for forest monitoring and rapid assessment of affected areas is required. Space-borne synthetic aperture radar (SAR) imagery with high resolution is now available for large-scale forest mapping and forest monitoring applications. However, a...

ژورنال: علوم آب و خاک 2012
نورایر تومانیان, , جهانگرد محمدی, , علیرضا کریمی‌‌کارویه, , عیسی اسفندیارپور بروجن, , محسن باقری بداغ‌آبادی, , محمدحسن صالحی, ,

Discrete Models of Spatial Variability (DMSV) have limitations for soil identification in traditional soil maps. New approaches, generally called digital soil mapping (DSM), using continuous methods (CMSV), try to predict soil classes or soil properties based on easily-available environmental variables. The objective of this study was to map the soil classes of the Borujen area, Chaharmahal-va-...

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