نتایج جستجو برای: the images of landsat mss (1975) and landsat etm (2003)

تعداد نتایج: 25045965  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده کشاورزی 1390

مطالعه حاضر در سه بخش، با هدف بررسی تغییرات و تحولات پوشش اراضی، شناسایی و طبقه‎بندی خاک‎ها و ارزیابی کیفی تناسب اراضی منطقه اردستان برای دو محصول مهم منطقه (یونجه و جو) با استفاده از روش‎های‎ فائو (محدودیت ساده و پارامتریک) و تکنیک‎های تصمیم‎گیری چندمعیاری (ahp و fuzzzy ahp) و همچنین مقایسه کارایی روش‎های مبتنی بر منطق بولین و فازی صورت گرفت. به منظور بررسی روند تخریب اراضی منطقه در طی سه دهه ...

Journal: :مرتع و آبخیزداری 0
زهرا عبدالعلی زاده دانشجوی دکتری مرتعداری، دانشگاه محقق اردبیلی، ایران. عطالله ابراهیمی دانشیار دانشکده منابع طبیعی و علوم زمین دانشگاه شهرکرد، ایران

sabzkouh protected area, with the variety of natural ecosystems and landscapes, is very rich from the point of diversity in climate, topography, habitats and wildlife that is located in central zagros. evidences show that its ecosystems such as other iranian semiarid natural ecosystems, undergone changes in their vegetation structure over the past years. obtaining multi-spectral and multi-tempo...

2009
Yosio Edemir Shimabukuro Valdete Duarte Egidio Arai Ramon Morais de Freitas Paulo R. Martini André Lima

This paper presents the use of multitemporal remote sensing data for monitoring land cover changes in Acre State, Brazilian Amazônia. The 2000 Landsat ETM+, the 1990 Landsat TM, and 1980 Landsat MSS were used. The 2005 and 2007 MODIS images were also used to map deforestation occurred during the recent years and to map burned areas occurred in the 2005 dry year. The Landsat and MODIS images wer...

Journal: :Remote Sensing 2017
Joan-Cristian Padró Xavier Pons David Aragonés Ricardo Díaz-Delgado Diego García Javier Bustamante Lluís Pesquer Cristina Domingo-Marimon O. González-Guerrero Jordi Cristóbal Daniel Doktor Maximilian Lange

The use of Pseudoinvariant Areas (PIA) makes it possible to carry out a reasonably robust and automatic radiometric correction for long time series of remote sensing imagery, as shown in previous studies for large data sets of Landsat MSS, TM, and ETM+ imagery. In addition, they can be employed to obtain more coherence among remote sensing data from different sensors. The present work validates...

2014
Xiao Xiaohong Wu Yonggang

For optical images, cloud and cloud shadow is always a problem during image processing and interpretation. Landsat ETM+ images, as a kind of optical images, are affected by cloud too. On the other hand, microwave images such as ALOS PALSAR images, which depend on microwave, is not affected by cloud, thus they are cloud-free. The aim of this study is to develop a semi-automatic method for removi...

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: :IJKSR 2013
Miguel Torres Ruiz Marco Moreno Rolando Quintero Giovanni Guzmán

In this paper, the authors describe and implement an algorithm to perform a supervised classification into Landsat MSS satellite images. The Maximum Likelihood Classification method is used to generate raster digital thematic maps by means of a supervised clustering. The clustering method has been proved in Landsat MSS images of different regions of Mexico to detect several training data relate...

2014
ASMAA SADIQ ABDUL JABAR GHAZALI SULONG LOAY EDWAR GEORGE

In remote sensing images the gapping is a known phenomenon. There are several reasons for image gaps, e.g. shadowed area for SAR data sets, cloud coverage for optical imagery and instrument errors such as SLC-off failure. On May 13, 2003 the Scan Line Corrector (SLC) of Landsat 7 Enhanced Thematic Mapper Plus (ETM+) sensor failed permanently causing around 20% of pixels per scene not scanned wh...

2013
Brian L. Markham Dennis L. Helder

Forty-year calibrated record of earth-reflected radiance from Landsat: A review" (2012). a b s t r a c t a r t i c l e i n f o Sensors on Landsat satellites have been collecting images of the Earth's surface for nearly 40 years. These images have been invaluable for characterizing and detecting changes in the land cover and land use of the world. Although initially conceived as primarily pictur...

Journal: :Remote Sensing 2016
Ricardo Díaz-Delgado David Aragonés Isabel Afán Javier Bustamante

This paper presents a semi-automatic procedure to discriminate seasonally flooded areas in the shallow temporary marshes of Doñana National Park (SW Spain) by using a radiommetrically normalized long time series of Landsat MSS, TM, and ETM+ images (1974–2014). Extensive field campaigns for ground truth data retrieval were carried out simultaneous to Landsat overpasses. Ground truth was used as ...

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