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Possibilities of Using GPS when Analysing Road Accidents
Jokešová, Markéta ; Semela, Marek (referee) ; Panáček, Vladimír (advisor)
Diploma thesis deals with the possibilities of using GPS when analysing road accidents. The history and structure of U.S. global positioning system, Russian GLONASS system and European Galileo system are described. GPS receivers are sorted out by the possibility of use. The thesis deals with the methods of refinement GPS and how the vehicles can be monitored using GPS. In the practical part of this diploma thesis measurements with several types of navigations were made. And a comparison of accuracy of measured data with the real situation where the car was found at the moment of measuring followed and how fast was gone.
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GPS data usability in mobile robot navigation problem
Novák, Pavel ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
This work is focused on problems of the GPS/DGPS receiver precision used by mobile robot for navigation in outdoor environment. The first part deals with theoretical analysis of GPS, description of it´s functions, errors and their influence on measurements accuracy. Second part deals with practical measurements performed at two locations with different types of obstacles restricting the view to the sky and using the refining methods of measuring the DGPS or so-called differential GPS. The last part of study presents the measured results and its analysis.
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Bearings for space
Vavřík, Petr ; Nečas, David (referee) ; Košťál, David (advisor)
Currently, space satellites in orbit are required to operate reliably for more than 10 years. This places high demands on the satellite's tribological systems, which must function properly in the hostile space environment for this period. This bachelor thesis deals with the description of suitable bearings and their lubrication for space applications. Lubrication regimes are described at the outset. Then, space factors affecting the proper operation of tribological systems are summarized. The largest part is devoted to the description of the most used bearings and lubricants. The thesis concludes with the design of suitable bearings and their lubrication for the satellite reaction wheel.
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Mechanical design the rotary joint of satellite antenna
Šreibr, Vít ; Mazal, Pavel (referee) ; Paloušek, David (advisor)
The aim of this bachelor thesis is a mechanical design of the rotary joint of the satellite antenna. It is a partial solution of the project which is dealing with a development of new product for a commercial subject. The device enables horizontal and vertical movement of the satellite. The established aims are solved in the whole range. The basic structure is conceived as a weldment. The other parts are connected with the body by demountable joints. The choice of key points is supported by calculations and the design is documented by technical drawings. This thesis is suitable for readers with an intermediate technical knowledge.
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Orientation Control of Satellite - Laboratory Experiment
Neužil, Ondřej ; Baran, Ondřej (referee) ; Urbanec, Tomáš (advisor)
This diploma thesis is about the basics of satellite systems, about their sorting, usage and technologies. An important part is the description of the principles controlling and stabilization of the small experimental CubeSat type satellites. The main point is the proposition and construction of the laboratory model of the CubeSat type satellite that should simulate the chosen methods of controlling and stabilization in laboratory conditions. The thesis describes the construction of the electronic parts of the model, the controlling software of the satellite’s processor and user software for easy controlling by PC.
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Satellite power supply
Pavlík, Arnošt ; Boušek, Jaroslav (referee) ; Pavlík, Michal (advisor)
The bachelor thesis consists of the design and realization switched source for use in satellites of Cubesat type. The paper describes the theoretical knowledge of switched sources. The document also contains basic theoretical knowledge for the application of electronic devices in the cosmic environment and contains a description of the Cubesat concept and their application benefits. In the paper there is systematically described how to design a power source for application in a Cubesat satellite.
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Design and implementation of educational CubeSat
Košút, Martin ; Zamazal, Michal (referee) ; Povalač, Aleš (advisor)
This thesis describes the design of a CubeSat with a 1U (10x10x10 cm) size, which will be used in laboratory tasks. It includes mechanical construction printed on a 3D printer with six photovoltaic cells, mounted on the top. Cells will produce electricity to power all systems and to charge the onboard NiMH batteries to make the CubeSat independent of other sources of energy. The proposed design of an electrical power supply system and an onboard computer combined with a communication system is based on off the shelf components. The two-way wireless communication link between computer and a CubeSat is realized thanks to the ground station, which is also part of a design. Students will make other systems, which will communicate with the built in onboard computer via internal RS 485 communication bus. Internal EEPROM memory is used to save measured values. Modularity, possible future expandability, and easy repair in case of any failure were the key optimization parameters of the design.
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An overview of atmospheric carriers for launching satellites into Earth's orbit
Bačová, Alena ; Petrásek, Miloslav (referee) ; Daněk, Vladimír (advisor)
This bachelor´s thesis is dealing with an overview of aircrafts designed as a launch platform for an air launch of satellite into the low Earth orbit. The thesis is divided into four main parts. The first part describes main principles of reaction engine and its two types of engines. The second part provides an overview of aircrafts as launch platform in the USA. The third part deals with these launch platforms in the former SSSR. The fourth part is devoted to aircrafts as launch platform in the Europe.
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Use of GPS in the Car Industry Oriented on Self-driving Vehicles
Gróf, Marko ; Sedláček, Pavel (referee) ; Šedrlová, Magdalena (advisor)
Tato bakalářská práce se zabývá využitím GPS v automobilovém průmyslu se zaměřením na bezpilotní vozidla. Hlavním cílem bylo přiblížit GPS systém jako takový, jeho využití v autonomních vozidlech, vysvětlit výhody i nevýhody těchto automobilů a popsat různé hardwary a softwary, které dále využívají. První polovina práce nejprve do velkých detailů charakterizuje GPS, aby se čtenář seznámil s tím, jak navigační systém pracuje. V druhé části se čtenář dozví o autonomních vozech, do jakých úrovní jsou rozdělena, a které systémy používají. Dále jsou zde popsány výhody a nevýhody těchto vozidel a také hlavní rozdíly mezi dnešními a autonomními auty. Závěr této práce je soustředěn na benefity inteligentní dopravy, ale i na pohled do budoucnosti vozidel či celé dopravy.
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