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Logging of vehicle's position by a differential GPS with base station
Vala, Matěj ; Repka, Martin (referee) ; Straka, Tomáš (advisor)
The present work deals with the study of GPS, differential GPS and GPS with base station. The research focuses on the functioning, present status and future development of these systems. Further the thesis presents the actual measurement of the vehicle route using different GPS system. Base station, experimental vehicle, ADMA-G-PRO+, RT3000 and conventional GPS devices were used for the route measurement. The measurements were performed with and without correction. The analysis of the measured data was carried out in Matlab software in TeleMatrix, focusing on different parameters for each GPS system. The first analysis evaluates the route measurements using three GPS systems (RT3000, ADMA-G-PRO+ and a conventional GPS device). The results obtained show the effect of signal quality, horizontal speed, number of satellites, vehicle orientation, heading standard deviation and accuracy status during normal driving and during specific runs for the different GPS systems. The second analysis evaluates the RT3000 with and without correction for different manoeuvres. The evaluated results show that the RT3000 with correction provides higher accuracy than the RT3000 without correction. The RT3000 with correction shows a lower standard deviation of heading in the range of 0.210° - 2.228°, confirming its higher accuracy compared to the RT3000 without correction, where the standard deviation of heading ranges from 0.384° - 4.418°.
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Differential GPS
Madron, Tomáš ; Veselý, Miloš (referee) ; Žalud, Luděk (advisor)
This master’s thesis is the design of the system of the differential GPS, creation of the software for basic wireless communication between 2 GPS receivers, and practical tests of the designed system. Parameters and characteristics of system were determined and they should inform us better about the appropriateness of the designed system for navigation of a mobile robot in outside conditions.
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Sattelite Navigation and Compasss Data Fusion
Maceček, Ivo ; Kopečný, Lukáš (referee) ; Žalud, Luděk (advisor)
Theoretical information about different satellite navigation systems used for determination of position. Special attention is attended to system GPS. There are consulted main principles of the GPS and some error sources. Application of differential GPS for minimization of these errors is discussed. Next part is about examples of basic principles for measuring earth magnetic field. Last chaps are about practical realization of mentioned DGPS, which is applied for outdoor mobile robot navigation. There is described hardware structure, software utilities and application of an aided tool for GPS - electronic compass. Some practical measurements and results are presented.
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CDMA Network Capacity
Pasečný, Jan ; Kejík, Petr (referee) ; Hanus, Stanislav (advisor)
The Bachelor thesis deals with determining which factors influence the capacity of CDMA network. This type of network is now being used worldwide due to its huge increase in capacity when compared to other transmissions systems. The work contains summary of basic parameters of single-cell and multi-cell systems with reference to the capacity. Obtained results are assesed and compared at the end of the work.
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Security in Wireless Sensor Networks
Maňák, Jiří ; Hajný, Jan (referee) ; Šimek, Milan (advisor)
This bachelor thesis deals with the proposal of simulation model for wireless sensor networks in program Castalia with a focus on energy consumption of sensor nodes using the communication units Mica2 and MicaZ. It describes the basic work with simulation program Castalia, including its installation. Furthermore, deals with the security of wireless sensor networks and theirs security proposal.
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Minidarpa robot - senzoric subsystem
Sedlák, Luboš ; Žalud, Luděk (referee) ; Kopečný, Lukáš (advisor)
This master’s thesis describes a sensorial subsystem of a mobile robot. The thesis mentions the structure and a basis of the satellite navigation. There are also described each systems and visualization techniques as e. g. WGS 84, including also other systems for specification of more accurate position on the Earth (EGNOS, WAAS and others). This thesis describes closely also a differential GPS and the corrections. For the purposes of the thesis there has been assembled GPS software for a fundamental and a remote station. There have been chosen and used modules for receiving a GPS signal and wireless modules for their communication. There are also used outcomes from the project of the Open Street Map in the thesis. Results of this project are described in details, decoded, adjusted and converted into RNDF file. At the end of this thesis there has been composed a function of the program for portable camera which works on principle time of flight. This portable camera is dedicated to look for immediate barrier and also for 3D space view in front of the robot. This thesis also including the process how the power source has been built up for this portable scanner.
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Laboratory exercises creation for course Sensor systems
Štětina, Vítězslav ; Jelínek, Mojmír (referee) ; Šimek, Milan (advisor)
Topic of bachelor thesis is Laboratory exercises creation for course Sensor systems and describes the theoretical and practical solutions focused on the creation of 5 laboratory experiments. To the laboratory exercises is used a programming language nesC, operating system TinyOS and other programs. In 5 chapters describe the actual instructions for laboratory exercises. They are composed of the basic tasks to complex assignment. The workflow is a task assignment, a list of necessary equipment, the procedure for creating the main part of program and subsequent installation to the node or base station. A part of the task is to analyze the source code and description of new orders compared to previous exercises.
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Measuring of Key Parameters of Experimental LTE-A Mobile Network
Bednář, David ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
The thesis is about measurment of experimental mobility network LTE-A setwork parameters on BUT in Brno. In the first part there is born of LTE network, which continues with general architecture of mobility and experimental LTE-A network. Together with thesis there is a description of measurment machine, with which was measurement provided. The result of thesis is created web application, which behavior is compress of measured values of LTE network parameters and create universal graphs.
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Laboratory exercises creation for course Sensor systems
Štětina, Vítězslav ; Jelínek, Mojmír (referee) ; Šimek, Milan (advisor)
Topic of bachelor thesis is Laboratory exercises creation for course Sensor systems and describes the theoretical and practical solutions focused on the creation of 5 laboratory experiments. To the laboratory exercises is used a programming language nesC, operating system TinyOS and other programs. In 5 chapters describe the actual instructions for laboratory exercises. They are composed of the basic tasks to complex assignment. The workflow is a task assignment, a list of necessary equipment, the procedure for creating the main part of program and subsequent installation to the node or base station. A part of the task is to analyze the source code and description of new orders compared to previous exercises.
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Security in Wireless Sensor Networks
Maňák, Jiří ; Hajný, Jan (referee) ; Šimek, Milan (advisor)
This bachelor thesis deals with the proposal of simulation model for wireless sensor networks in program Castalia with a focus on energy consumption of sensor nodes using the communication units Mica2 and MicaZ. It describes the basic work with simulation program Castalia, including its installation. Furthermore, deals with the security of wireless sensor networks and theirs security proposal.
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