Search results for: DIGITAL FILTERS, STABILITY ANALYSIS, DIGITAL SIGNAL PRO- CESSING

• A New Approach to Stability Evaluation of Digital Filters

  Publication

  • L. Grzymkowski
  • T. Stefański

  - Year 2018

  In this paper, a new numerical method of evaluating digital filter stability is presented. This approach is based on novel root-finding algorithms at the complex plane using the Delaunay triangulation and Cauchy's Argument Principle. The presented algorithm locates unstable zeros of the characteristic equation with their multiplicities. The proposed method is generic and can be applied to a vast range of systems. Verification of...

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• Testing Stability of Digital Filters Using Optimization Methods with Phase Analysis

  Publication

  • D. Trofimowicz
  • T. Stefański

  - ENERGIES - Year 2021

  In this paper, novel methods for the evaluation of digital-filter stability are investigated. The methods are based on phase analysis of a complex function in the characteristic equation of a digital filter. It allows for evaluating stability when a characteristic equation is not based on a polynomial. The operation of these methods relies on sampling the unit circle on the complex plane and extracting the phase quadrant of a function...

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• Testing Stability of Digital Filters Using Multimodal Particle Swarm Optimization with Phase Analysis

  Publication

  • D. Trofimowicz
  • T. Stefański

  - Year 2020

  In this paper, a novel meta-heuristic method for evaluation of digital filter stability is presented. The proposed method is very general because it allows one to evaluate stability of systems whose characteristic equations are not based on polynomials. The method combines an efficient evolutionary algorithm represented by the particle swarm optimization and the phase analysis of a complex function in the characteristic equation....

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• Marek Blok dr hab. inż.

  People

  Marek Blok in 1994 graduated from the Faculty of Electronics at Gdansk University of Technology receiving his MSc in telecommunications. In 2003 received Ph.D.  and in 2017 D.Sc. in telecommunications from the Faculty of Electronics, Telecommunications and Informatics of Gdańsk University of Technology. His research interests are focused on application of digital signal processing in telecommunications. He provides lectures, laboratory...

• Digital Signal Processing

  e-Learning Courses

  • T. Stefański

• A digital implementation of the PSK transmitter and receiver as multirate algorithms of the digital signal processing

  Publication

  • K. Świder
  • M. Papaj

  - Year 2011

  In this paper designs of the transmitter and the receiver of PSK signals as three-rate algorithms of the digital signal processing are described. Additionally we show the examples of the transmitter and the receiver of the following signals: BPSK, QPSK. We discussed also an influence of the cascade of the shaping filter and the receiving filter on the intersymbol interference in the received complex envelope.W pracy opisano projektowanie...

• Digital signal processing applied to the modernization of Polish Navy sonars

  Publication

  • J. Marszal

  - Polish Maritime Research - Year 2014

  The article presents the equipment and digital signal processing methods used for modernizing the Polish Navy’s sonars. With the rapid advancement of electronic technologies and digital signal processing methods, electronic systems, including sonars, become obsolete very quickly. In the late 1990s a team of researchers of the Department of Marine Electronics Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk...

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• Digital Processing of Frequency–Pulse Signal in Measurement System

  Publication

  • D. Świsulski
  • E. Pawłowski
  • M. Dorozhovets

  - Year 2018

  The work presents the issue of the use of multichannel measurement systems of sensors processing input value to impulse signal frequency. The frequency impulse signal obtained from such sensors is often required to be processed at the same time with a voltage signal which is obtained from other sensors used in the same measurement system. In such case, it is usually necessary to sample the output signals from all sensors in the...

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• Wiktoria Wojnicz dr hab. inż.

  People

  Faculty of Mechanical Engineering and Ship Technology, Zakład Mechaniki Stosowanej i Biomechaniki, Institute of Mechanics and Machine Design

  DSc in Mechanics (in the field of Biomechanics)  - Lodz Univeristy of Technology, 2019 PhD in Mechanics (in the field of Biomechanics)  - Lodz Univeristy of Technology, 2009 (with distinction)   List of papers (2009 - ) Wojnicz W., Wittbrodt E., Analysis of muscles' behaviour. Part I. The computational model of muscle. Acta of Bioengineering and Biomechanics, Vol. 11, No.4, 2009, p. 15-21 Wojnicz W., Wittbrodt E., Analysis of...

• Andrzej Czyżewski prof. dr hab. inż.

  People

  Department of Multimedia Systems

  Prof. zw. dr hab. inż. Andrzej Czyżewski jest absolwentem Wydziału Elektroniki PG (studia magisterskie ukończył w 1982 r.). Pracę doktorską na temat związany z dźwiękiem cyfrowym obronił z wyróżnieniem na Wydziale Elektroniki PG w roku 1987. W 1992 r. przedstawił rozprawę habilitacyjną pt.: „Cyfrowe operacje na sygnałach fonicznych”. Jego kolokwium habilitacyjne zostało przyjęte jednomyślnie w czerwcu 1992 r. w Akademii Górniczo-Hutniczej...