نتایج جستجو برای: داده های landsat

تعداد نتایج: 527839  

Journal: :Remote Sensing 2014
Nischal Mishra Md. Obaidul Haque Larry Leigh David Aaron Dennis L. Helder Brian L. Markham

This study evaluates the radiometric consistency between Landsat-8 Operational Land Imager (OLI) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) using cross calibration techniques. Two approaches are used, one based on cross calibration between the two sensors using simultaneous image pairs, acquired during an underfly event on 29–30 March 2013. The other approach is based on using time seri...

Journal: :Remote Sensing 2015
Liya Sun Karsten Schulz

Land cover classification has been widely investigated in remote sensing for agricultural, ecological and hydrological applications. Landsat images with multispectral bands are commonly used to study the numerous classification methods in order to improve the classification accuracy. Thermal remote sensing provides valuable information to investigate the effectiveness of the thermal bands in ex...

2015
Xiaohong Xiao Shimon Wdowinski Yonggang Wu

The aim of this study is to extract water body using the integrated features of Landsat ETM+ and ALOS PALSAR data. Water body extracted from Landsat ETM+ tends to lose smaller water bodies like small rivers and ponds. Besides, water area with plant (lotus) is difficult to recognize. ALOS PALSAR data have a much higher resolution, capable of extracting almost all the water bodies without confusi...

2017
Yan Zhou Jinwei Dong Xiangming Xiao Tong Xiao Zhiqi Yang Guosong Zhao Zhenhua Zou Yuanwei Qin Jun Xu

Open surface water bodies play an important role in agricultural and industrial production, and are susceptible to climate change and human activities. Remote sensing data has been increasingly used to map open surface water bodies at local, regional, and global scales. In addition to image statistics-based supervised and unsupervised classifiers, spectral indexand threshold-based approaches ha...

Journal: :Remote Sensing 2018
Josep Pardo-Pascual Elena Sánchez-García Jaime Almonacid-Caballer Jesús Palomar-Vázquez Enrique Priego de los Santos Alfonso Fernández-Sarría A. Balaguer-Beser

This paper evaluates the accuracy of shoreline positions obtained from the infrared (IR) bands of Landsat 7, Landsat 8, and Sentinel-2 imagery on natural beaches. A workflow for sub-pixel shoreline extraction, already tested on seawalls, is used. The present work analyzes the behavior of that workflow and resultant shorelines on a micro-tidal (<20 cm) sandy beach and makes a comparison with oth...

2012
J. P. Spruce J. C. Smoot J. T. Ellis K. Hilbert R. Swann

This paper discusses the development and implementation of a geospatial data processing method and multi-decadal Landsat time series for computing general coastal U.S. land-use and land-cover (LULC) classifications and change products consisting of seven classes (water, barren, upland herbaceous, nonwoody wetland, woody upland, woody wetland, and urban). Use of this approach extends the observa...

Journal: :Remote Sensing 2014
Lidia Vlassova Fernando Perez-Cabello Hector Nieto M. Pilar Martín David Riaño Juan de la Riva

Land Surface Temperature (LST) is one of the key inputs for Soil-Vegetation-Atmosphere transfer modeling in terrestrial ecosystems. In the frame of BIOSPEC (Linking spectral information at different spatial scales with biophysical parameters of Mediterranean vegetation in the context of global change) and FLUXPEC (Monitoring changes in water and carbon fluxes from remote and proximal sensing in...

2013
Molly K. Macauley

This paper surveys the peer-reviewed social science literature in which Landsat data are used to inform public policy in managing natural resources and the environment. The paper differentiates articles in which methodology is developed (for example, developing and testing algorithms or demonstrating how data could be used) and articles in which data are applied for decisionmaking or policy imp...

Journal: :Remote Sensing 2017
Neil Flood

The new Sentinel-2 Multi Spectral Imager instrument has a set of bands with very similar spectral windows to the main bands of the Landsat Thematic Mapper family of instruments. While these should, in principle, give broadly comparable measurements, any differences are a function not only of the differences in the sensor responses, but also of the spectral characteristics of the target pixels. ...

2008
E. J. LINDQUIST M. C. HANSEN D. P. ROY

Landsat remote sensing of the central African humid tropics is confounded by persistent cloud cover and, since 2003, missing data due to the Landsat-7 Enhanced Thematic Mapper Plus (ETM + ) scan line corrector (SLC) malfunction. To quantify these limitations and their effects on contemporary forest cover and change characterization, a comparison was made of multiple Landsat-7 image mosaics gene...

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