نتایج جستجو برای: satellite data

تعداد نتایج: 2456095  

Journal: :پژوهش های جغرافیای طبیعی 0
زهره جلا ل زاده کارشناسی ارشد فیزیک دریا، دانشگاه آزاد اسلامی - واحد علوم و تحقیقات مسعود ترابی استادیار دانشگاه آزاد اسلامی - واحد تهران شمال احمد دالکی استادیار دانشگاه شهید بهشتی

the changes in time and location of surface temperature from a water body has an important effect on climate activities, marine biology, sea currents, salinity and other characteristics of the seas and lakes water. traditional measurement of temperature is costly and time consumer due to its dispersion and instability. in recent years the use of satellite technology and remote sensing sciences ...

Journal: :مهندسی برق مدرس 0
pedram hajipour 1phd student, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran, ali shahzadi assistant professor, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran,

in this paper, an interference management for multi-beam satellite network to enhance spectral efficiency is studied. first, a two-satellite for future generation satellite network using cognitive radio technology is provided.this network is composed of a secondary satellite and aprimary satellite where the primary satellite system does not suffer from severe destructive interferences coming fr...

ژورنال: علمی شیلات ایران 2019

The aim of this paper is to determine the sea surface salinity (SSS) and temperature (SST) of Persian Gulf by using the AMSU-B sensor data of NOAA-16 satellite. A multiple linear regression method was used by statistical computing software R on AMSU-B data and in-situ data. Based on the results, the correlation coefficient (R2) for salinity and temperature was 0.85 and 0.94, respectively. Also,...

Journal: :International Journal of Remote Sensing and Earth Sciences (IJReSES) 2010

Journal: :desert 2013
h.r. keshtkar h. azarnivand h. arzani s.k. alavipanah f. mellati

land cover is one of basic data layers in geographic information system for physical planning and environmentalmonitoring. digital image classification is generally performed to produce land cover maps from remote sensing data,particularly for large areas. in the present study the multispectral image from irs liss-iii image along with ancillary datasuch as vegetation indices, principal componen...

Journal: :Journal of Agricultural Meteorology 2005

  In recent decades, satellite and model- based precipitation products has attracted attention of the scientists and researchers in hydrology and other disciplines. The purpose of this research is quantitative comparison of MERRA and GPM satellite precipitation products with ground station precipitation values as reference data in Kashafrud basin. The important point about these data is their ...

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