National Repository of Grey Literature 5 records found  Search took 0.00 seconds. 
Temperature characteristics of surface using remote sensing methods
Hofrajtr, Martin ; Štych, Přemysl (advisor) ; Brom, Jakub (referee)
Temperature characteristics of surface using remote sensing methods Abstract The aim of this thesis is to design a methodology for refining the land surface temperature values obtained from Landsat 8 satellite data in areas with diverse land cover. The research section describes factors influencing the radiation of the Earth's surface. Also mentioned are current methods used for processing infrared thermal data and calculate land surface temperature. The practical part describes satellite and airborne data used in the analytical and verification process. All parts of the applied method leading to the subpixel value of the land surface temperature are described in detail in the method part. The results are then compared with airborne verification data with better spatial resolution and with currently used methods. Finally, the pros and cons of this method and its possible improvement in the future are mentioned. Key words: land surface temperature, land surface emissivity, satellite data, Landsat 8, airborne data, subpixel method, Czech Republic
Evaluation of area and changes of the agricultural land in Czechia 2006 - 2012
Hofrajtr, Martin ; Štych, Přemysl (advisor) ; Laštovička, Josef (referee)
Evaluation of area and changes of the agricultural land in Czechia 2006 - 2012 Abstract This thesis deals with the evaluation of area and changes of the agricultural land in selected regions in Czechia on the basis of the data from the years of 2006 and 2012, using the available international and national databases of land cover and land use. In the practical part, firstly the compatibility of classification systems of the surveyed databases is compared, then the state and changes of individual classes of agricultural land are analysed on two levels - national and regional - using functions of ArcGIS software. The overall result confirmed the assumption that the proportion of permanent grass cover in respect to agricultural land is increasing at the expense of that of arable land. Certain discrepancies between the results, however, point out different purposes of the surveyed databases and thus differences in their parameters and classification systems. Remote sensing, which enables to determine the real state of agricultural land and its classes, seems to be auspicious. Key words: change detection, agricultural land, CORINE Land Cover, Urban Atlas, land register - LPIS

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