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GPS car position system
Talanda, Oldřich ; Biolek, Dalibor (referee) ; Kadlec, Jaroslav (advisor)
This paper focuses on one of the possible ways of protecting a car as well as offering a possibility of easy location detection anywhere in the Czech Republic.The aim of the paper is to suggest and practically realize a device, that would meet these requirements by utilizing the GPS and GSM technologies. The first part of the paper is focused on laying out the problem. The next part tries to familiarize one with the problems of GPS navigation, work with microcontrollers and data transfer utilizing the GSM technology. The third part deals with program equipment of the microcontroller and the governing communication system.
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Combined Global Navigation Satellite System Module
Jurajda, David ; Jílek, Tomáš (referee) ; Žalud, Luděk (advisor)
The thesis objective is design of methodology focused on accuracy measurement in field of GPS/GLONASS receivers. Text is devided into five main parts. The first one is focused on GNSS technology. Second one deals with used coordinate systems and map projections (ETRS89, WGS84, UTM, Gauss-Krüger). Next part discusses statistical methods. Part four is focused on hardware. Then the final part describes experiment realization and obtained data analysis.
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Design and Testing of Stochastic Navigation in Traffic Simulator TRASI
Erben, Vojtěch ; Drahanský, Martin (referee) ; Honzík, Petr (advisor)
The thesis deals with the design and implementation of routing algorithms in trafic simulator TRASI. These algorithms are capable of planning vehicle's route by giving a set of crossroads that vehicle needs to go through. Furthermore, this work deals with design and implementation of stochastic navigation including implementation of communication between vehicles. Stochastic navigation suggests several alternative routes based on a traffic event. From these routes is randomly (stochastically) choosen one based on information about the throughput of particular found routes. In the introduction of this work is described the traffic simulator TRASI, it's user interface and basic control interface. Further is described theory of traffic flow on macroscopic and microscopic level, followed by the descripion of algorithms for oriented graphs traversal and their implementation in the simulator. In the following parts of this thesis is described communication layer, that takes care of the communication between vehicles, and it's implementation. Further is described design and implementation of stochastic navigation. In the final chapter is done verification of the functionality of the simulator and tests of particular routing algorithms.
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Navigation systems
Jirkovská, Šárka ; Stejskal, Vojtěch (referee) ; Pust, Radim (advisor)
This bachelor´s thesis is focused on the navigation systems GPS, Galileo and their development. The work describes the functions and parameters of mentioned navigation systems including individual modulation techniques, used frequencies and signal securing by encoding. Segments of navigation systems GPS and Galileo, which divide into control and space parts, are mentioned next. The principle of signals generation by GPS system satellites, where the navigation message is the basis of user´s data transfer, is introduced. The principle of generation of the navigation message is described as well as its structure and characteristics of used CA-code and P-code. Next part of the work presents the components of the Galileo navigation system satellites and conspectus of planned services of this system. The summary of used receivers’ characteristics and summary of selected producers of digital geographical data for navigation devices follow next. The last part mentions the simulation of signal generation of GPS satellite. The simulation includes encoding and decoding of navigation message. This simulation is created in Matlab version 7.4 environment.
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Educational GPS Receiver
Cséfalvay, Gabriel ; Blansko), (Metra (referee) ; Šebesta, Jiří (advisor)
This work explicates a simple GPS receiver intended for laboratory demonsration of DSSS signal demodulation and apparent distance measurement. The receiver will be able to seek for individual sattelite signals, measure their shift against local oscillator, demodulate navigational data, display information on LCD and communicate with PC via USB.
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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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GPS based Localization using the Java ME application
Figurny, Radek ; Morávek, Patrik (referee) ; Růčka, Lukáš (advisor)
The task of the Master's thesis has been to develop the MIDlet, which is able to receive data from an external GPS module via Bluetooth. Data are received in the NMEA 0183 format and are processed to extract longitude, latitude, elevation, velocity, number of visible satellites and measurement accuracy of longitude, latitude and elevation. Users have a possibility to save their actual location with a short description to the cell phone’s memory. The MIDlet is also able to save a user defined way-point and navigate to this way-point. The MIDlet itself was developed in the Netbeans IDE with a software development kit (SDK) made by Nokia company. This kit is designed for the Symbian OS s60 3rd edition FP1, which contains a s60 emulator and a s60 MIDlet for a direct compilation in the cell phone. The MIDlet is made of three main parts. The first part shows a longitude, latitude, elevation, velocity, longitude and latitude measurement accuracy, date and time. The second one shows a direction of north, latitude and longitude. The last one shows a direction to the selected way-point and a distance to this location. In theoretic part of the thesis there are described the GPS navigation system, Bluetooth system, geodetic system WGS 84 and programing language Java and its part Java ME.
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Small vehicle motion control
Štark, Zdeněk ; Valach, Soběslav (referee) ; Macho, Tomáš (advisor)
In this thesis, a simple small vehicle powered by differential chassis was projected and constructed. The vehicle is controlled manually with the help of user program on personal computer (PC). The software equipment allows recording trajectory run by the small vehicle and then repeating it automatically. The operation system of the small vehicle is based on microcontroller ATmega16 series. Communication between the microcontroller and PC is carried out through RS232 serial bus. The vehicle has digital compass and five reflex sensors that serve for obstruction detection in the closest vicinity of the vehicle. Power unit of the vehicle consists of seven NiCd cells with the capacity of 500 mAh. Propellant unit is powered directly from NiCd cells. Voltage of 5 V for feeding of the control electronics is gained through the set up clasp source of voltage connected to NiCd cells.
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Outdoor Robot
Tomášek, Ondřej ; Burian, František (referee) ; Žalud, Luděk (advisor)
This work deals with navigation of the mobile outdoor robots. It is divided in two parts. In the first part, the mobile robots and their control problem is examined. The technical means for navigation and obstacles avoidance are described and the mathematical means for sensor data fusion and optimal position estimation of the robot are outlined. In the second part the hardware of the robot is described and furthermore it deals with description of the practically realized algorithms for obstacles avoidance and robot navigation.
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Communication system for the blind - the fixed part
Botko, Ondřej ; Koton, Jaroslav (referee) ; Herman, Ivo (advisor)
The thesis deals with problems of navigation blind in buildings, where is not possibility navigation by GPS (Global Positioning System). This thesis contain resolution through the use of communication units, placed in floor of buildings. This comunication units, equipped with receiver and transmitter, can give direction for blind by send own identification to transceiver in speciál stick (the thesis does not contain solving of the stick), which can information blind of position. Two comunication unit solution are available, that differs by using component part. The main difference is in use control unit of circuit. First circuit use as control unit ATAR862-3 (microprocessor and transmitter in one case) and the second one use microprocessor ATmega 8L. Both component made by Atmel corporation. Circuit with ATmega 8L is more exacting on curent consumption, but solving this problem is available and communication unit has low pretensions and long life. The part of thesis is program, which solving communication protocol for no-problem communication between unit in floor and special stick.
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