|
|
Simulation of sound source motion for multichannel speaker topology
Dvořák, Petr ; Kurc, David (referee) ; Orlovský, Kristián (advisor)
This paper describes the simulation of the motion of a sound source in space with several speakers. It deals mainly with the study and subsequent implementation of events necessary for simulating the motion of the virtual sound source. The theoretical part is therefore concerned with finding these phenomena and with their description. Mainly that means description of panning of the sound and of the Doppler effect. In the following practical part of the work, the previously described phenomena are applied into Matlab. In the created interface , it is then possible to select the parameters of the simulation, such as the trajectory of the motion of the virtual sound source, the number of the points of the trajectory, etc. Analyses of the generated signal are then made of the selected referential parameters of the simulation.
|
|
|
Ultrasound blood flow detector
Šimák, Jakub ; Dlouhý, Jiří (referee) ; Rozman, Jiří (advisor)
Bachelor's thesis deals with design and electrical scheme of simple ultrasonic blood flow indicator, by which is possible get information of speed of blood without any invasion into patient's body. This device has been proposed for measure speed of blood in lower limbs, mainly patients with ischemic disease.
|
|
|
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.
|
|
|
Radar sensors for speed measurements
Doležal, Tomáš ; PhD, Jaroslav Čechák, (referee) ; Kokolia, Martin (advisor)
The main topic of this bachelor thesis is selecting a suitable microwave sensor for measuring the speed of vehicles in regular traffic, while covering multiple road lanes by a suitable method. Furthermore, the optimal one is selected in the form of search, based on the necessary parameters from commercially available radar sensors measuring primary speed. In the next step, simulation is performed for the selected speed sensor in the MATLAB environment, depending on its parameters and the modes in which it can work. The simulation also includes environmental influences on the received signal. There is introduced programmed graphical user interface for simulating a lot of situations on the road for two cars in the next section. Last section summarizes results of real measurement.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
|
|
Cheap device for non-invasive detection of blood flow
Mívalt, Filip ; Majzner, Jiří (referee) ; Sedlák, Petr (advisor)
Blood flow measurement by Doppler effect is widely used technique for the assessment of blood vessels condition. Stenosis, aneurysm and blood insufficiency might be revealed by this method. In recent years, measurement devices based on Doppler effect haves been introduced also in veterinary medicine. For example, peripheral blood pressure of a cat might be observed at tail or paw. This thesis deals with the design of blood flow Doppler detector prototype and its implementation to fully operational instrument. Proposed device is uses a low-cost doppler probe. Blood flow detection is based on the analysis of Doppler probe output signal discrete power spectrum. The frequency spectrum is determined from digitized preprocessed analog signal. This thesis should illustrate the possibility of usage of Arduino platform and cheap ultrasound vascular probe as alternative for expensive Doppler devices.
|
|
|
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.
|
|
|
Radar-Based Measurement for Speed Sport Disciplines
Lach, Martin ; Široký, Adam (referee) ; Maršík, Lukáš (advisor)
This thesis is focused on radar speed measurement of sportsmen. The aim is to implement system which determines and visualizes speed of sportsman. The outcome of this work is among other library in C for analysis of radar data. The work deals with explanation of radar. It describes the different types of radars, their functions and characteristics. The following chapter explains the terms important for signal processing. Next are analysis of the problem and description of implementation. At the end of the thesis are tests and evaluation of success.
|
guest ::
