Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
Low-level measurement of ELF magnetic fields
Cích, Augustín ; Hanzelka, Michael (oponent) ; Fiala, Pavel (vedoucí práce)
This Master's thesis deals with design of sensor network for synchronised low-level recording of changes in magnetic part of Earth's field in ELF band in multiple places. The goal is acquisition of changes due to solar storm activity, while taking into account, that in research of geomagnetic effects connected with solar events is spectrum of interest broader and reach up to VLF, where a solution is often made of combination of receivers in ELF and VLF, a decision was made, after consulting with thesis supervisor and researchers, that device will be designed for ELF, but can be easily modified, by changing preamplifier, for using in higher frequency bands, creating a solid founding for further measurements and research in this field.
Digitizer for radar senzors
Cích, Augustín ; Šebesta, Jiří (oponent) ; Kubíček, Michal (vedoucí práce)
This bachelor thesis deals with digitization of analog signal of radar sensors, which employ Doppler‘s effect. Radar sensor used for construction of prototype was HB100. Digitization was done with ADC, which has 12 bit resolution and sample rate of 15,625 kS/s. Control unit of aquisition is Arduino UNO, which sends data to computer, where they are, in application interface made in MATLAB, processed using „watterfall“ spectrogram.

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