نتایج جستجو برای: variation area and remote sensing technique

تعداد نتایج: 17003553  

Journal: :international journal of advanced biological and biomedical research 2014
alireza bamdadi ali sarkargar ardakani saeed sadeghian

in the fifth development plan establishment, establishment of the cadastre system of agriculture nationwide has been defined to be the work priority of institutions and organizations responsible in the area of agriculture and equity issuance in the country. in this study, the possibility of provision of the cadastral mapping of agriculture by a integration of the data of the remote sensing and ...

باغستانی , ناصر , ثواقبی, محمد حسین , رحیمیان , محمد حسن , عبداللهی, جلال ,

The present study discusses a method used to produce updated information about vegetation cover in arid and semi-arid zones, using RS data and GIS technique. In this method, Landsat ETM+ data in 2002 was collected in an area of about 60000 ha in Nodoushan basin, Yazd, Iran. To collect the necessary ground data, 50 sites of different vegetation types were selected and the percentage of vegetatio...

Studying the variations of energy balance and surface temperature, vegetation and spectral reflectance of geomorphological features during the catastrophic processes such as storms and environmental hazards on a large scale requires powerful tools such as thermal remote sensing. This research has considered the effective use of remote sensing methods by such practical approach. The study area i...

Journal: :Remote Sensing 2017
Olli Nevalainen Eija Honkavaara Sakari Tuominen Niko Viljanen Teemu Hakala Xiaowei Yu Juha Hyyppä Heikki Saari Ilkka Pölönen Nilton Nobuhiro Imai Antonio M. G. Tommaselli

Small unmanned aerial vehicle (UAV) based remote sensing is a rapidly evolving technology. Novel sensors and methods are entering the market, offering completely new possibilities to carry out remote sensing tasks. Three-dimensional (3D) hyperspectral remote sensing is a novel and powerful technology that has recently become available to small UAVs. This study investigated the performance of UA...

2006
R.E.E. Jongschaap

This study investigated the scope and constraints for integrated use of mechanistic crop growth simulation models and earth observation techniques. Integration of highquality crop growth models and information derived from earth observations can contribute to improved use of resources, reduced crop production risks, reduced environmental degradation, and increased farm income. In the past, both...

Remote sensing indices are used to analyze the Spatio-temporal distribution of drought conditions and to identify the severity of drought. This study, using various drought indices generated from Madis and TRMM satellite data extracted from Google Earth Engine (GEE) platform. Drought conditions in Marivan city from February to November for the years 2001 to 2017 were analyzed based on spatial a...

Journal: :journal of agricultural science and technology 2010
m. r. mobasheri m. chahardoli m. farajzadeh

ecological studies based on field data have shown that vegetation phenology follows a relatively well-defined temporal pattern. this pattern, that is reflecting the cumulative temperature from the date of the beginning of the growth, can be represented by the use of a suitable model. due to the spatial, temporal, and ecological complexity of these processes a simple method to monitor phenologic...

Gholamreza Zehtabian Hasan Ahmadi Hossein Azarnivand Saeideh Kalantari

One of the influential tools concerning the rangeland and vegetation sciences isthe technology of remote sensing and satellite data. Satellite data have played essentialroles in preparing the needed information for studying the vegetation. Vegetation has beenwidely recognized as one of the best indicators for determining the land conditions. Usingvegetation indices is one of the techniques of r...

Journal: :iranian journal of earth science 0
misagh mirzaei department of mining engineering, south tehran branch, islamic azad university, tehran, iran peyman afzal camborne school of mines, university of exeter, penryn, uk ahmad adib department of mining engineering, south tehran branch, islamic azad university, tehran, iran masoumeh khalajmasoumi department of geology, sciences and research branch, islamic azad university, tehran, iran afshar zia zarifi department of mining engineering, lahijan branch, islamic azad university, lahijan, iran

the aim of this study is prospecting of iron and manganese in the balvard 1:100000 sheet which is situated in sanandaj - sirjan structural zone utilizing index overlay and fuzzy logic methods in the gis. in this study, the layers for integration, alterations, geological, geophysical, geochemical and structural data based on stream sediments, airborne magnetometeric and remote sensing studies. b...

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

Phase, frequency, and time synchronization are crucial requirements for many applications, such as multistatic remote sensing communication systems. Moreover, the solution becomes even more challenging when nodes orbiting or flying on airborne spaceborne platforms. This article compares available technologies used coordination of in distributed applications. Additionally, this proposes a genera...

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