National Repository of Grey Literature 58 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Antenna array to determine positions of airplanes
Zelenka, Pavel ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
The project is aimed to design an antenna array for an aircraft positioning system at an airport. The system operates at frequencies 1030 MHz and 1090 MHz. The antenna is also used by the DME/TACAN system operating in frequency range from 1025 MHz to 1150 MHz. The required impedance bandwidth of the antenna array is 125 MHz, i.ee from 1025 MHz to 1150 MHz. The theoretical part of the thesis analyses properties of different patch antennas and discusses the possibility of extending the impedance bandwidth. The practical part is focused on the development of the numerical model of the broadband stacked patch antennas. In addition, properties of the 3-element and 4-element antenna array are compared. At the end, results of the thesis are summarized.
Double-ridge waveguide horn antenna for EMC measurements
Martincová, Kateřina ; Pokorný, Michal (referee) ; Mikulášek, Tomáš (advisor)
The thesis deals with the design and realization of a horn antenna for electromagnetic compatibility measurement. First it focuses on general theory of antennas, than it focuses more on horn antennas and their design. Second part deals with description of antenna realization and comparison of simulated results.
Testing of products generated from Meteosat satellite (MSG) images in synoptic praxis
Pokorný, Michal ; Žák, Michal (advisor) ; Bližňák, Vojtěch (referee) ; Dejmal, Karel (referee)
First part of the thesis introduces possibilities of depicting of the data provided by the MSG (Meteosat Second Generation) satellite. Different color combinations (RGB - red, green, blue) description made by the basic channels combination follows. The main part of this thesis is focused on T-re profiles (T - temperature, re - effective cloud particle radius). The analysis of profiles of temperature versus the effective radius of cloud particles shows the vertical distribution of the effective particle size in clouds. The profiles are computed and constructed from the satellite retrieved data and they show graphically the distribution of cloud particles and indirectly represent the severity of the developing storms. Forecasting and predicting dangerous phenomena such as hailstorms or tornados that occur in severe storms is the main objective of the technique. This nowcasting tool was tested in Central Europe and the end of this thesis presents the results of the testing.
Testing of produkts generated from Meteosat satellite (MSG) images in synoptic praxis
Pokorný, Michal ; Žák, Michal (advisor)
First part of the thesis introduces possibilities of depicting of the data provided by the MSG (Meteosat Second Generation) satellite. Different color combinations (RGB - red, green, blue) description made by the basic channels combination follows. The main part of this thesis is focused on T-re profiles (T - temperature, re - effective cloud particle radius). The analysis of profiles of temperature versus the effective radius of cloud particles shows the vertical distribution of the effective particle size in clouds. The profiles are computed and constructed from the satellite retrieved data and they show graphically the distribution of cloud particles and indirectly represent the severity of the developing storms. Forecasting and predicting dangerous phenomena such as hailstorms or tornados that occur in severe storms is the main objective of the technique. This nowcasting tool was tested in Central Europe and the end of this thesis presents the results of the testing.
Analysis of location-based services and their integration in the field of tourism
Pokorný, Michal ; Smutný, Zdeněk (advisor) ; Čermák, Radim (referee)
This thesis focuses on the analysis of services based on the location of mobile devices and their integration in the field of tourism. The basis of the thesis is the definition of the LBS term, brief description and history of the technology used by these services and an overwiev of the current market of the mobile LBS. The main goal of the thesis is a draft of LBS aplication for use in the field of tourism and to find out what components are the most sought after by the czech customers, based on the destination of their travels. This has been achieved through a self-questionnaire survey and a comparison with studies dealing with this issue. This analysis is also the biggest contribution of this thesis.
ICT support of education in Youth diagnostic centers
Pokorný, Michal ; Brdička, Bořivoj (advisor) ; Leipert, Jiří (referee)
The thesis is focused on an investigation of the benefit evoked by the ICT supported connected instruction between the Child Diagnostic Institute (the DDU) and the tribal school of a pupil, who comes to DDU for a voluntary diagnostic stay (DDP). The aim of this work is to determine an interest in this project among teachers, both from DDU and teachers from primary schools, whose pupils attended the DDU. The method of research is an online survey among teachers from DDU and teachers from schools outside the Diagnostic Institute who have experience with the DDU clients. The results are evaluated separately for teachers from DDU and teachers from other primary schools that have experiences with those pupils.
Textil Integrated Horn Antenna
Jaroš, Ondřej ; Pokorný, Michal (referee) ; Vélim, Jan (advisor)
This diploma thesis describes the corrugated substrate integrated horn antenna designed to surface wave’s excitation in the UWB band groups 3, 4, 5 and 6 (6 – 10 GHz). The antenna is integrated into 3,4 mm thick textile with relative permittivity r = 1,195. The coaxial cable is connected via the SMA connector that is attached to the aluminum bracket. From the microstrip line transition the corrugated substrate integrated waveguide is excited. Two strip lines are placed in front of the aperture for improvement of the impedance matching. The directivity of the antenna is 12 dBi at 8 GHz. At the same frequency, the antenna efficiency is 70%.
Planar and wired Yagi-Uda antennas
Křepela, Pavel ; Pokorný, Michal (referee) ; Mikulášek, Tomáš (advisor)
This work deals with the study of Yagi-Uda antennas, followed by analysis and design of planar antenna with wired reflector. The first part focused on the analysis of the antenna and parameters. Another part of the continuing investigation of the optimum parameters for a given antenna followed by a design in Wi-Fi 5 GHz band. The antenna is simulated in CST Microwave Studio. The final part devoted the results achieved
Multimedia Overview of Synoptic Meteorology
Pokorný, Michal ; Žák, Michal (advisor) ; Bednář, Jan (referee)
This diploma thesis contains an overview of the synoptic meteorology, from the so called Norwegian meteorological school and its interlacing with more modern concepts. It deals with air masses, atmospheric fronts and pressure systems. Further, the overview of latter conceptual models of atmospheric fronts is presented. It shows using of satellite and radar measurements in synoptical praxis, as well. The first chapter introduces formation of air masses and apportionment of air masses. It notices transformation of air masses, too. The second chapter deals with basic clasification of atmospheric fronts. Fronts are shown with help of satelite and radar images. Creation and development of pressure systems follows.

National Repository of Grey Literature : 58 records found   1 - 10nextend  jump to record:
See also: similar author names
7 POKORNÝ, Marek
23 POKORNÝ, Martin
1 Pokorný, M.
7 Pokorný, Marek
23 Pokorný, Martin
3 Pokorný, Matyáš
2 Pokorný, Matěj
3 Pokorný, Michael
2 Pokorný, Milan
1 Pokorný, Miroslav
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