نتایج جستجو برای: remote sensing and physical

تعداد نتایج: 16903751  

Journal: :علوم و فناوری فضایی 0
e peighani-asl d abbasi-moghadam b ghafary v tabataba-vakili

remote sensing using small spacecraft arising from multi-objective economic activity problems is getting more and more developed. these satellites require very accurate pointing to specific locations of interest, with high reliability and small latency. the space borne imaging systems always attempted to achieve the highest ground resolution possible with the available technology at the given t...

2017
Minerva Singh Timo Tokola Zhengyang Hou Claudia Notarnicola

Avian species persistence in a forest patch is strongly related to the degree of isolation and size of a forest patch and the vegetation structure within a patch and its matrix are important predictors of bird habitat suitability. A combination of space-borne optical (Landsat), ALOS-PALSAR (radar), and airborne Light Detection and Ranging (LiDAR) data was used for assessing variation in forest ...

2014
Saranya

I. Introduction Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object. The term generally refers to the use of aerial sensor technologies to detect and classify objects on Earth by means of propagated signals. There are two main types of remote sensing: passive remote sensing and active remote sensing. Passive sensors dete...

2014
Mirjana Bevanda Ned Horning Bjoern Reineking Marco Heurich Martin Wegmann Joerg Mueller

BACKGROUND Linking animal movements to landscape features is critical to identify factors that shape the spatial behaviour of animals. Habitat selection is led by behavioural decisions and is shaped by the environment, therefore the landscape is crucial for the analysis. Land cover classification based on ground survey and remote sensing data sets are an established approach to define landscape...

2008
Jürg Schopfer Stefan Dangel Mathias Kneubühler Klaus I. Itten

In spectrodirectional Remote Sensing (RS) the Earth's surface reflectance characteristics are studied by means of their angular dimensions. Almost all natural surfaces exhibit an individual anisotropic reflectance behaviour due to the contrast between the optical properties of surface elements and background and the geometric surface properties of the observed scene. The underlying concept, whi...

2014
Samson Okongo Mabwoga Ashwani Kumar Thukral

The increasing population in the developing countries has rendered wetlands vulnerable to land use changes. Remote sensing offers a rapid and efficient means of data acquisition of ecosystems in time and space. The present study was undertaken to identify changes in the Harike wetland, a Ramsar site in the state of Punjab, India; and identify causal factors, as well as vulnerable areas threaten...

Journal: :Progress in Physical Geography: Earth and Environment 2009

Journal: :مرتع و آبخیزداری 0
زهرا گیوئی اشرف کارشناس ارشد مدیریت مناطق بیابانی محمد علی حکیم زاده ااستادیار گروه مدیریت مناطق بیابانی، دانشکدة منابع طبیعی، دانشگاه یزد محمد زارع استادیار گروه مدیریت مناطق بیابانی، دانشکدة منابع طبیعی، دانشگاه یزد زهره ابراهیمی خوسفی کارشناس ارشد مدیریت مناطق بیابانی کاظم دشتکیان عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی یزد

desertification relates to the both the process and end state of drylands degradation. salinization and alkalinization are two indicators of soil degradation in arid and semi-arid regions. the main objectives of this research is monitoring of soil salinity using high spectral and spatial resolution of remote sensing to assess desertification in the marvast plain, yazd province. two images of te...

Journal: :آب و خاک 0
راضیه دائم پناه غلامحسین حق نیا امین علیزاده علیرضا کریمی کارویه

abstract in the recent decades, application of geostatistic and remote sensing for mapping salinity and sodicity of surface soil and monitoring it's changes have been developed. the goal of this research was to compare the capability of geostatistic and remote sensing methods for mapping salinity-sodicity of soils in playa from sourthern mah valat county, in the khorasan razavi province. 88 sam...

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