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Radar-Based Measurement for Speed Disciplines
Piňos, Michal ; Široký, Adam (referee) ; Maršík, Lukáš (advisor)
The aim of this bachelor thesis is radar-based measurement for speed disciplines. For this purpose, the Doppler radar with continuous wave was used, K-MC4 to be specific. Standard signal processing techniques were used to extract the speed information from the radar signal. The key method for obtaining Doppler frequency from signal is Fourier transform. Cosine effect is compensated based on the computed angle.The result of this work is a detector capable of measuring speed and direction of measured objects. Implemented solution also allows the detection of certain objects.
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Vehicle Classification Using Radar
Raszka, Aleš ; Zemčík, Pavel (referee) ; Maršík, Lukáš (advisor)
This Master thesis deals with usage of radar signal for vehicle classification. The thesis uses radar modules with continuous wave based on Doppler effect. Radar signal is processed by a series of signal processing method finished by Fourier transform. Data produced by FFT is used to create SVM and AdaBoost classifier which can be used to classify vehicles into groups.
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Radar Active Cruise Control
Rous, Petr ; Široký, Adam (referee) ; Maršík, Lukáš (advisor)
This bachelor thesis is dedicated to radar active cruise control. The aim of the work is to implement program logic of the adaptive cruise control system. It describes basic techniques of radar signal processing as well as various difficulties during this process. It is also concerned with methods used for radar objects detection. Withing the work, two different radar modules are compared for their suitability to use as sensors of active cruise control. Finally, implemented system is tested using data collected in real road transport.
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Doppler blood flow indicator
Byrtus, David ; Čech, Petr (referee) ; Rozman, Jiří (advisor)
Bachelor´s thesis deals with methods for measuring Doppler velocity and blood flow in non-directional system with unmodulated carrier wave, system design indicator of blood flow for a frequency of 4 MHz ultrasound intensity of 100 mW/cm2 and evaluating methods of Doppler signals.
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Doppler blood flow indicator
Mojžíš, Karel ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
This bachelor´s thesis deals with basis of ultra-acoustics. The project presents basic information about Doppler effect. It describes the methods of processing and analyzing of velocity and direction of blood at doppler’s systems with modulated and unmodulated carrier wave. The project presents the system design of non-directional doppler indicator with unmodulated carrier wave for 8 MHz frequency, generating intensity of ultrasound 100 mW/cm2 and diameter D-shaped transmitting transducer 8 mm. This bachelor's thesis is concerned with circuit solution of a battery powered blood flow indicator with digital display. All the function blocks of the system are experimentally measured and their function is verified. The thesis contains complete materials for the construction of the doppler blood flow indicator.
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Ultrasound blood flowmeter
Mojžíš, Karel ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
This master's thesis is concerned with the basis of ultra-acoustics and it explains the application of Doppler effect in medicine as a diagnostic method used for measuring blood flow velocity in blood vessels. The thesis also presents Doppler systems used for diagnostic purposes. It describes the principles of these systems, shows accompanying flowcharts and explains the function of these systems. There is also included the system design of the whole ultrasonic blood flow velocity meter. The system has been designed for the specified parameters with continuous 4 MHz operating frequency, generated intensity of ultrasound 100 mW/cm^2 and diameter D-shaped transmitting transducer 8 mm. In the design of personal solution there are described all the function blocks of the ultrasonic meter. There is also described the choice of appropriate components and designed all the required supply voltages. All the function blocks of the system are experimentally verified. The system has been designed with acoustic intercept and the resultant velocity curves are displayed on software oscilloscope on PC.
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Range Measurement Using Radar
Urbánek, Radomír ; Musil, Martin (referee) ; Maršík, Lukáš (advisor)
The aim of this bachelor's thesis is to design and implement method using radar to distance measurement. The first part describes radar principles. A brief introduction radar signal processing methods and radar techniques for distance measurement as well. The next part describes concept and implementation of system for estimate distance. In the end, the implemented method is evaluated and possible continuation is stated.
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Satellite Telemetry Archive
Vorálek, Jan ; Povalač, Aleš (referee) ; Urbanec, Tomáš (advisor)
This thesis deals with a design of telemetry archive of PSAT, PSAT-2 and BRICSat sattelites. This telemetry data need to be extracted from SDR IQ records. The thesis contains a Doppler effect theory and description of structure of telemetry data. Then it presents a design of a program for Doppler effect correction, demodulation and decoding of these records and saving the data to telemetry archive. Thesis also deals with analysis of decoded data.
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Object Classification Using Radar
Přívara, Jan ; Zemčík, Pavel (referee) ; Maršík, Lukáš (advisor)
The aim of this bachelor's thesis is to design and implement classification system using radar, specifically vehicle classification system. The first part describes both radar principles and radar signal processing methods. A brief introduction to machine learning is provided, with emphasis on Support Vector Machines classification model. Feature extraction methods from radar signal are discussed as well. The next part describes concept and implementation of system for vehicle classification. In the end, the implemented classification system is evaluated and the possible continuation of this work is stated.
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Doppler's sensor beat freqeuncy proccessing
Dušek, Martin ; Macho, Miloslav (referee) ; Fuchs, Michal (advisor)
This work is engaged in ways of objects speed measuring mainly helped by Doppler Effect. The sensor HB410 is described in this work and its possible elaboration output heterodyne analog signal. The calculation of objects speed is deduced from frequency of heterodyne signal. In this work is projected circuit solution for elaboration of analog signal and its digitalization. Available types and nature of microcontrollers which are elaborating digital signal and communicating with PC are summarized in this work. In the last chapter is described microcontroller's driving software and PC software for speed measure.
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