نتایج جستجو برای: etm

تعداد نتایج: 2501  

2004
P. J. Watt D. N. M. Donoghue K. B. McManus

This paper compares and contrasts predictions of forest height in Sitka spruce (Picea sitchensis) plantations based on mediumresolution Landsat ETM+, high-resolution IKONOS satellite imagery and airborne Light Detection And Ranging (LiDAR) data. The relationship between field-measured height and LiDAR height is linear and highly significant (R 0.98) and so LiDAR height measurements were used to...

2008
Alkan Günlü Fatih Sivrikaya Emin Zeki Baskent Sedat Keles Günay Çakir Ali İhsan Kadiogullari

Remote sensing has been considered a low-cost, large-area coverage forest information resource ideally suited to broad-scale forest inventory objectives. The objective of this study is to determine stand type parameters such as crown closure, development stage and stand types, and land cover obtained from Landsat 7 ETM image and forest cover type map (stand type map). The research also focuses ...

2002
Yuhong Tian Curtis E. Woodcock Yujie Wang Jeff L. Privette Nikolay V. Shabanov Liming Zhou Yu Zhang Wolfgang Buermann Jiarui Dong Brita Veikkanen Tuomas Häme Kaj Andersson Mutlu Ozdogan Yuri Knyazikhin Ranga B. Myneni

The development of appropriate ground-based validation techniques is critical to assessing uncertainties associated with satellite databased products. Here we present a method for validation of the Moderate Resolution Imaging Spectroradiometer (MODIS) Leaf Area Index (LAI) product with emphasis on the sampling strategy for field data collection. This paper, the first of two-part series, details...

2002
Andrew Stewart

The Statewide Landcover and Trees Study (SLATS) is currently in the process of mapping woody change across the State of Queensland for the era 1999 to 2001. SLATS covers such a large area that Landsat Thematic Mapper (TM) imagery was chosen as the most effective data for this purpose. Since 1995 the woody change in Queensland has been mapped every two years. The 1999 to 2001 change era is the f...

Journal: :Energies 2022

Tandem solar cells have a superb potential to push the power conversion efficiency (PCE) of photovoltaic technologies. They can be also more stable and economical. In this simulation work, an efficient perovskite cell (PSC) with Spiro-OMeTAD as hole transport material (HTM) no electron (ETM) replace traditional PSC structure is presented. This then used top sub together copper indium gallium su...

2009
Eleni Agiatzidou George D. Stamoulis

The SIS (SmoothIT Information Service) entity has been introduced by FP7 project SmoothIT, to support Economic Traffic Management (ETM) for overlays. It is employed by ETM mechanisms in order to convey information between the overlay application and the underlay network. In this paper we present two different ways of cooperation between the SIS entities of different ISPs, in the case that these...

2016
Ramin Pashaie Nabil H. Farhat

Dynamics of electron-trapping materials (ETMs) is investigated. Based on experimental observations, evolution of the ETM's luminescence is mathematically modeled by a nonlinear differential equation. This improved model can predict dynamics of ETM under blue light and near-infrared (NIR) exposures during charging, discharging, simultaneous illumination, and in the equilibrium state. The equilib...

Journal: :Computers & Geosciences 2006
Jinqu Zhang Yunpeng Wang Yan Li

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....

2008
Li Xi

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...

2011
Shunlin Liang Hongliang Fang Jeffrey T. Morisette Mingzhen Chen Chad J. Shuey Charles L. Walthall Craig S. T. Daughtry

-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 ...

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