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Influence of magnetic and electromagnetic fields on signals transmitted by optical fibres
Schneider, Tibor ; Vrba, Kamil (oponent) ; Münster, Petr (vedoucí práce)
The diploma thesis deals with the influence of magnetic and electromagnetic fields on signals transmitted by optical fibers. Subsequently, the results of individual measured values are evaluated and analyzed, which were measured using an interferometer and a polarimeter. The first part deals with the theoretical analysis of the principles of interference and polarization of light. It further explains the basic operation of the above-mentioned devices as well as the immunity of the optical fiber to EMI. The second part of the work presents selected devices and technologies that were used as a source of electromagnetic or magnetic radiation. Subsequently, individual phenomena are plotted both in the course of time and with the help of a spectrogram or Poincaré sphere. From the measured results we can conclude that the commonly available technologies, which were selected for the diploma thesis, will not cause greater negative problems to the signal on measured frequencies in optical fibre, that could degrade the transmitted signal.
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Aerial platform for flight time measurements
Schneider, Tibor ; Dvořák, Jan (oponent) ; Pokorný, Jiří (vedoucí práce)
The bachelor thesis elaborates on creating a mathematical model and realisation of a flying platform. Consequently, it compares results from the mathematical model which simulates flight duration with results which were measured with constructed flying platform. In the first part of the thesis, flying platforms are introduced and also the usability range and what types exist. Matlab was chosen as a language to create the script. In the second part, principle of the matematical model is explained, graphs which explain power influence in UAV movement are presented. There are time dependences of hovering time on different UAV weight, flight distance or outside environment temperature. In the end, there is final comparison of theoretical calculations with measured time values. According to the calculations and measurments, it is more optimal to fly with a speed of 4m/s rather than 1m/s. According to the calculations, distance of 1000m was on the limit, therefore, the measurments were conducted within the range of 600m.
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Influence of magnetic and electromagnetic fields on signals transmitted by optical fibres
Schneider, Tibor ; Vrba, Kamil (oponent) ; Münster, Petr (vedoucí práce)
The diploma thesis deals with the influence of magnetic and electromagnetic fields on signals transmitted by optical fibers. Subsequently, the results of individual measured values are evaluated and analyzed, which were measured using an interferometer and a polarimeter. The first part deals with the theoretical analysis of the principles of interference and polarization of light. It further explains the basic operation of the above-mentioned devices as well as the immunity of the optical fiber to EMI. The second part of the work presents selected devices and technologies that were used as a source of electromagnetic or magnetic radiation. Subsequently, individual phenomena are plotted both in the course of time and with the help of a spectrogram or Poincaré sphere. From the measured results we can conclude that the commonly available technologies, which were selected for the diploma thesis, will not cause greater negative problems to the signal on measured frequencies in optical fibre, that could degrade the transmitted signal.
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Aerial platform for flight time measurements
Schneider, Tibor ; Dvořák, Jan (oponent) ; Pokorný, Jiří (vedoucí práce)
The bachelor thesis elaborates on creating a mathematical model and realisation of a flying platform. Consequently, it compares results from the mathematical model which simulates flight duration with results which were measured with constructed flying platform. In the first part of the thesis, flying platforms are introduced and also the usability range and what types exist. Matlab was chosen as a language to create the script. In the second part, principle of the matematical model is explained, graphs which explain power influence in UAV movement are presented. There are time dependences of hovering time on different UAV weight, flight distance or outside environment temperature. In the end, there is final comparison of theoretical calculations with measured time values. According to the calculations and measurments, it is more optimal to fly with a speed of 4m/s rather than 1m/s. According to the calculations, distance of 1000m was on the limit, therefore, the measurments were conducted within the range of 600m.
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