Sökning: "radiometer"

Visar resultat 6 - 10 av 20 uppsatser innehållade ordet radiometer.

1. 6. Retrieval of Cloud Top Pressure

   Master-uppsats, Linköpings universitet/Institutionen för datavetenskap; Linköpings universitet/Tekniska fakulteten

   Författare :Claudia Adok; [2016]
   Nyckelord :neural networks; multilayer perceptron; random forest regression; cloud top pressure; cloud top height;

   Sammanfattning : In this thesis the predictive models the multilayer perceptron and random forest are evaluated to predict cloud top pressure. The dataset used in this thesis contains brightness temperatures, reflectances and other useful variables to determine the cloud top pressure from the Advanced Very High Resolution Radiometer (AVHRR) instrument on the two satellites NOAA-17 and NOAA-18 during the time period 2006-2009. LÄS MER

3. 7. SMOS satellite hardware anomaly prediction methods based on Earth radiation environment data sets

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Aleksi Walden; [2016]
   Nyckelord :SMOS; Soil Moisture and Ocean Salinity; satellite; MIRAS; Microwave Imaging Radiometer with Aperture Synthesis; ESAC; hardware anomaly; prediction; radiation environment;

   Sammanfattning : SMOS (Soil Moisture and Ocean Salinity) is ESA's Earth Explorer series satellite carrying the novel MIRAS (Microwave Imaging Radiometer with Aperture Synthesis) interferometric synthetic aperture radar. Its objective is monitoring and studying the planet's water cycle by following the changes in soil moisture levels and ocean surface salt concentrations on a global scale. LÄS MER

4. 8. Quantifying terrain factor using GIS applications for real estate property valuation

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Dahlia Mudzaffar Ali; [2016]
   Nyckelord :digital elevation model DEM ; GIS; geography; physical geography; property valuation; Earth and Environmental Sciences;

   Sammanfattning : This thesis studies the use of GIS applications to derive adjustment figures for the terrain factor in property valuation tasks. It aims at suggesting a quantitative approach alternative to evaluate the terrain factor as opposed to traditional methods and current industry practices where terrain is qualitatively judged based on visual observation at site and subjected to individual opinion. LÄS MER

5. 9. Significance of soil moisture on vegetation greenness in the African Sahel from 1982 to 2008

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Mohamed Ahmed; [2012]
   Nyckelord :geography; NDVI; soil moisture; time series analysis; Sahel; remote sensing; temporal correlation; physical geography; Earth and Environmental Sciences;

   Sammanfattning : Popular science The Sahel is a semi-arid eco-climatic transition zone in northern Africa separating the Sahara desert from the Africa’s tropical forest. The Sahel word in Arabic language means “shore” which is linguistically describes the appearances of vegetation as a shoreline defining the boundary of the Sahara desert. LÄS MER

7. 10. Long-term Stability Analysis of Antenna Temperature & Brightness Temperature from ESA's SMOS Satellite

   Master-uppsats, KTH/Geodesi och geoinformatik

   Författare :Lotta Rehn-Molin; [2011]
   Nyckelord :;

   Sammanfattning : The European Space Agency’s Soil Moisture and Ocean Salinity (SMOS) satellite is designed to accurately detect the energy of the electromagnetic radiation naturally emitted from Earth, from which the level of soil moisture and ocean salinity content can be derived. Studies of these two geophysical parameters will increase the knowledge of the Earth’s water cycle and improve the understanding of the climate. LÄS MER