Faculty of Electrical Engineering

Czech Technical University in Prague

CTU in Prague

Research Topics for Prospective PhD Students

Department:
Branch of study:
Supervisor:
Date
Topic
Supervisor
Branch of study
Department
Date
Image processing methods „on the fly“ for the real time shape and position measurement and their implementation
doc. Ing. Jan Fischer, CSc.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Design methods for image processing on the fly. The basic idea is, that solved methods don’t require the complete image stored in the image memory buffer. They should work only with a small part (typically 3–5 lines) of image that is stored in internal high speed operating memory of a DSP or FPGA. Designed methods should be implemented into high speed image processing system based on the FPGA, or into small systems based on the microcontrollers without a large external memory, that processes image acquired from a CCD line sensor or a CMOS area sensor.
http://measure.feld.cvut.cz/node/595
Measurement of Quality Parameters of Telecommunication Network Interfaces
Doc. Ing. Jan Holub, Ph.D.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Innovation and optimization of speech and audio transmission quality measurement methods (improvements of POLQA ITU-T P.863) and for conversational quality (as per Q15/SG12 ITU-T). Existing methods drawback analysis, design and verification of new related methods. Advanced signal analysis method application (wavelet analysis, fuzzy approach, …) for abovementioned areas. New trends in transmitted signal quality measurements (emotion detection, adaptive channel capacity allocation etc.).
http://measure.feld.cvut.cz/people/holub
Adaptive flight control under challenging environmental conditions
doc. Ing. Jan Roháč, Ph.D.
Air Traffic Control
Department of Measurement
10. 4. 2017
Theoretical form of navigation solutions in terms of position, velocity, and attitude (PVA) estimates is already well known; however, providing PVA estimates with high accuracy under challenging environmental conditions still plays a key role of current scientific interests. A prime concern is paid to the robustness and accuracy of navigation solutions under real flying conditions where the accuracy can be strongly affected by the varying vibrating, maneuvering impacts as well as environmental impacts and turbulence. Therefore, the area of this PhD study project addresses such problems and will focus on R&D of enhanced integrated solution ensuring improved performance with extended consideration of a sensory assembly. The emphasis will be put onto integration of available navigation sources, e.g. magnetometers, pressure sensors, GNSS positioning, laser scanners, radars etc. to guarantee accuracy even under unfriendly environmental conditions. The navigation solution will be applied on unmanned aerial vehicles (UAVs) whose control systems rely on precise and accurate navigation with a minimal latency. The R&D of such a control system is also going to be a part of this project. This control should then handle situations such as landing of the UAV on a moving platform no matter the environmental conditions and availability of GNSS signal.
Camera based tracking and navigation system
doc. Ing. Jan Roháč, Ph.D.
Air Traffic Control
Department of Measurement
26. 2. 2014
Long-term stability and accuracy of navigation solutions are commonly provided by aiding systems when cost-effective inertial sensors are used. Such an aiding system can be based on camera tracking and measuring system.
http://measure.feld.cvut.cz/rohac
Human body motion capture system
doc. Ing. Jan Roháč, Ph.D.
Air Traffic Control
Department of Measurement
23. 4. 2015
The topic deals with a design of human body motion capture system with optimized performance for battery operation. The system will use current technology of inertial sensors aided by magnetometers and GPS receiver. Furthermore, the design will cover a performance study, data processing techniques, tracking algorithms and optimized power consumption with respect to capturing points, data rates, wireless communication and calculation loads.
http://measure.feld.cvut.cz/rohac
In-field calibration of navigation systems
doc. Ing. Jan Roháč, Ph.D.
Air Traffic Control
Department of Measurement
26. 2. 2014
Accuracy of navigation solutions is dependent on correctness of navigation system calibration. The aim thus is put on methodology of in-field calibrations performed directly on a target vehicle and under real flight conditions.
http://measure.feld.cvut.cz/rohac
Navigation systems of terrestrial vehicles
doc. Ing. Jan Roháč, Ph.D.
Air Traffic Control
Department of Measurement
23. 4. 2015
The topic deals with a design of a navigation system dedicated to terrestrial applications. The emphasis will be put on a primarily inertial system supplemented by aiding system available in GPS denied environment. The aims will cover a performance study, data processing techniques, tracking algorithms, data validation and adaptive data fusion with optimized performance for dynamically changing conditions and environment.
http://measure.feld.cvut.cz/rohac
Failure Detection, Isolation and Recovery in Emergency Flight Planning for Aerospace Applications
doc. Ing. Pavel Pačes, Ph.D.
Air Traffic Control
Department of Measurement
26. 2. 2014
The research is focused on detection of airplane system failures which can influence safety of the flight. Pilot’s decisions are based on information provided by cockpit instruments which relays on sensors and data processing. In case of an emergency situation caused by engine failure the pilot is supposed to find a suitable place for landing. The research aims on definition of sensor set which is necessary for successful path planning with emphasis on new solutions and sensors which will overcome performance of MEMS sensors in terms of precision and will be cheaper than laser based systems (e.g. RLG sensors).
Detailed information is available at http://measure.feld.cvut.cz/cast
Advanced signal processing methods for non-destructive testing and diagnostics
Doc. Ing. Radislav Šmíd, Ph.D.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
With the rapid growth of processing power an advanced signal processing can be available in hand-held or stationary NDT (non-destructive testing) and diagnostic equipment. The aim of the thesis is to develop novel signal processing methods for improvement of detection and localization capabilities based on multichannel, adaptive and/or parallel signal processing.
http://measure.feld.cvut.cz/smid
Data validation in sensor networks for intelligent buildings
Doc. Ing. Radislav Šmíd, Ph.D.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Minimizing the number of physical sensors for intelligent building instrumentation lead to minimum redundancy in information processed by monitoring or control systems. A failure of single sensor causes massive degradation or catastrophic failure of control or monitoring. Using apriori knowledge, relationships between quantities and historic data is possible to validate the sensor data and estimate their quality.
http://measure.feld.cvut.cz/smid
Non-destructive testing of aircraft construction parts
Doc. Ing. Radislav Šmíd, Ph.D.
Air Traffic Control
Department of Measurement
26. 2. 2014
New approaches to non-destructive testing of aircraft construction parts, sensitivity improvement by means of signal processing.
http://wireless.feld.cvut.cz/diagnolab/
Signal analysis for vibration based condition monitoring of engines and gears
Doc. Ing. Radislav Šmíd, Ph.D.
Air Traffic Control
Department of Measurement
26. 2. 2014
Advanced signal analysis methods for vibration based condition monitoring of engines and gears, automation of diagnostics, detectability improvement.
http://wireless.feld.cvut.cz/diagnolab/
Virtual sensors for diagnostics
Doc. Ing. Radislav Šmíd, Ph.D.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Virtual sensors (also termed inferential or soft sensors) are replacement for physical sensors in various situations: a physical sensor is expensive to buy, install or maintain, there is no room to put in the sensor, or measured quantity is unavailable for sensing. Virtual sensors may enable diagnostic applications not previously considered to be economical. The aim of the thesis is to develop novel virtual sensors for diagnostics in selected area of applications
http://measure.feld.cvut.cz/smid
Radio position determination of the flying objects
Pavel Kovář, Doc. Dr. Ing.
Air Traffic Control
Department of Measurement
26. 2. 2014
The aim of the dissertation is the research of the advanced methods of the position determination of the flying objects using radio signals. The goal of the topic is a development of the original methods of the
signal processing, research and optimization of the new modulation schemes of the navigation signals, optimization of the availability, integrity and credibility of the navigation service.
http://radio.feld.cvut.cz/personal/kovar/index.php?lang=cz
Analysis of influence of transmission parameters on communication quality between pilots and dispatchers
prof. Ing. Jan Holub, Ph.D.
Air Traffic Control
Department of Measurement
14. 3. 2017
Hypothesis formulation, subjective testing to determine possible relation between communication quality, interactivity and transport parameters. Flight radiocommunication simulator design.
http://measure.feld.cvut.cz/vyzkum/hfbm
Automated uncertainty evaluation of digital impedance bridges based on their characterization and modelling
prof. Ing. Jan Holub, Ph.D., školitel specialista Ing. Jan Kučera, Ph.D.
Measurement and Instrumentation
Department of Measurement
19. 4. 2017
Uncertainty analysis is an integral part of calibration processes. Measurements performed with digital impedance bridges are influenced by several parameters and evaluation of their uncertainty is a complex task, where each part of the bridge (signal generators, transformers, impedance standards under test, grounding currents, their capacitive and inductive coupling…) has to be characterized and correlation between sources of uncertainties has to be evaluated. Due to complexity of applied signal generators, automated testing of their linearity and phase errors on highest metrology level is necessary.

http://measure.feld.cvut.cz/vyzkum/metlab
Contacless health monitoring of building structures and materials
Prof. Ing. Pavel Ripka, CSc.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Diagnostic methods for buildings and civil structures are of increasing importance. An example is diagnostics of structural integrity of brides and monitoring of the fault currents in pipelines, building structures and power networks. This area includes:
Development of new methods for contactless measurement methods of physical variables such as temperature, humidity and stress for on-site diagnostics of building components, structures and materials. Development of contactless sensor nodes using energy hervesting. Magnetic and capacitive imaging techniques for building constructions. Measurement, modeling and development of elimination and suppression strategies for fault currents in building contructions. Measurement and modeling of DC currents in pipelines and power grids.
After initial study period the topic will be focused and targeted according to the interest and capabilities of the student.
http://measure.feld.cvut.cz/ripka
Development of nanocrystalline films for fluxgate sensors
Prof. Ing. Pavel Ripka, CSc.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
In order to improve the quality of fluxgate sensors a key point is the development of material with enhanced properties and low magnetic noise. The student will focus on electroplating of NiFe film studying the effect of different composition and plating techniques (e.g. stress reducing additives) on the properties of the film and finally on the noise of the film. Moreover he will be in charge to experiment new solutions for the structure of the electroplated cores to reduce the noise (e.g. multilayer stacks). The work will include a large part of experimental activity in developing the materials, as well as testing their properties, but also theoretical investigation to unveil the origin of the magnetic noise in the sensor and then find the best way to reduce it.
http://measure.feld.cvut.cz/ripka
Gradiometer based on magnetic microwires
Prof. Ing. Pavel Ripka, CSc.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
During the last decade a lot attention was attracted by orthogonal fluxgate sensors based on micro wires. This sensors are particularly suitable when high spatial resolution is required. In many cases, it is necessary to measure the gradient of magnetic field, rather than homogenous magnetic field. In this case it is more efficient to use a gradiometer configuration. While there is an extended literature about traditional fluxgate in gradiometer mode, there are simply a couple of works about gradiometer built with on orthogonal fluxgate sensors based on micro wires. Therefore it is an open field for investigation. The Ph.D. student will have to make simulation to study the response of magnetic wire on the gradient of magnetic field. Then, he will create a model which optimize the position of the coils to maximize the sensitivity. All this steps will be verified experimentally by assembling and testing gradiometer. After gaining experience, the students will be asked to propose himself new configuration for the gradiometer. Finally he will focus his attention on the noise developing a gradiometer with better performances in terms of noise when measuring gradient of magnetic field than a sensor of homogenous field.
http://measure.feld.cvut.cz/ripka
Magnetic sensors and magnetometers for space and aerospace
Prof. Ing. Pavel Ripka, CSc.
Air Traffic Control
Department of Measurement
26. 2. 2014
Development of low-noise magnetometers and gradiometers for space research, navigation and geopysical prospection.
http://measure.feld.cvut.cz/ripka
Security Applications of Magnetic sensors
Prof. Ing. Pavel Ripka, CSc.
Measurement and Instrumentation
Department of Measurement
25. 2. 2014
Some magnetic soils contain nanoparticles with strong frequency dependence of susceptibility. Detection of metal objects in such soils is extremely difficult. The aim is to develop measurement and signal processing methods allowing detection and discrimination or anti-personnel mines with minimum metal content in such soils. The problem includes theoretical description of magnetic viscosity of superparamagnetic nanoparticles, verification on model and comparison to frequency dependencies of susceptibility measured both in the laboratory and in the field.
Detection frames are used to check persons and their luggage at the entrance to protected areas. New measurement and signal processing methods should be found to increase their feedthrough rate and detectivity. New algorithms should be developer for fusion of magnetic sensors (DC and AC, passive and active), optical cameras, thermal cameras, microwave and ultrasound sensors.
After initial study period the topic will be focused and targeted according to the interest and capabilities of the student.
http://measure.feld.cvut.cz/ripka
Responsible person: RNDr. Patrik Mottl, Ph.D.