نتایج جستجو برای: using remote sensing techniques

تعداد نتایج: 3871518  

With the increasing use of water resources, increasing population, urbanization, identification and conservation of aquatic ecosystems have received much attention. To this end, researchers consider the use of remote sensing techniques and GIS to be appropriate and efficient. In this study, habitat susceptibility of fish to the Choghakhor wetland in the central plateau of Iran was investigated....

Journal: :پژوهش های جغرافیای طبیعی 0
پرویز ضیائیان فیروزآبادی لیلا صیاد بیدهندی محمد اسکندری نوده

policy making and planning for agricultural development and conditional improvement of rural and farmers requires accurate and real time information and statistics. in iran, accessing relevant agriculture statistics is mainly gained through expert knowledge and traditional methods. studies show that these have a high percent of error. this research has been aimed so to, by using new methods inc...

Journal: :چغندرقند 0
فرزین فروغی منش کارشناس ارشد شرکت قند قزوین محمد عبدالهیان نوقابی دانشیار موسسه تحقیقات چغندرقند

the purpose of this study was to determine the plant density of sugar beet fields in qazvin region using satellite images and remote sensing techniques. the plant density can be used to estimate the pre-harvest sugar beet yield and as a result the proper management of agricultural and industrial processes involved in sugar production. satellite data can be used to remove the cost and time of co...

Journal: :فیزیک زمین و فضا 0
فرحناز تقوی استادیار، گروه فیزیک فضا، موسسه ژئوفیزیک دانشگاه تهران، ایران الهه اولاد دانشجوی کارشناسی ارشد هواشناسی، گروه فیزیک فضا، موسسه ژئوفیزیک دانشگاه تهران، ایران طاهر صفرراد دانشجوی دکتری اقلیم شناسی، دانشکده جغرافیا دانشگاه تهران، ایران پرویز ایران نژاد دانشیار، گروه فیزیک فضا، موسسه ژئوفیزیک دانشگاه تهران، ایران

mineral dust can directly affect the solar and terrestrial radiation in both visible and infrared (ir) spectral regions through scattering and absorption processes. due to specific optical properties of dust particles, satellite observed radiances carry the spectral signatures of dust particles that are different from molecular, cloud, and underlying surface. based on these differences, various...

Journal: :Journal of Agricultural Chemistry and Environment 2014

Journal: :Nucleation and Atmospheric Aerosols 2023

In this research, the use of remote sensing techniques and geographic information systems was relied upon to study topography ruins Uruk, which is located east city Samawah, 60 km from centre city, draw topographical maps, regression directions stereoscopic contour maps area compare results with process providing using The work traditional field survey, it found through research that means mode...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2019

2009

Remote sensing is the observation and measurement of objects from a distance, i.e. instruments or recorders are not in direct contact with objects under investigation. Remote sensing depends upon measuring some kind of energy that is emitted, transmitted, or reflected from an object in order to determine certain physical properties of the object. One of the most common types of remote sensing i...

Journal: :international journal of environmental research 2012
j.o. odindi p. mhangara

given the critical role played by urban green spaces and the emergence of remote sensing as avaluable natural resource management tool, this study sought to identify trends in green spaces within thecontext of south africa’s transition period (1990 - 2000). using the city of port elizabeth as a case study, threesets of landsat - 5 thematic mapper images (1990, 1995 and 2000) were geo-processed,...

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