Wyniki wyszukiwania dla: V-NOTCH

• Generalized adaptive notch smoothing revisited

  Publikacja

  • M. Niedźwiecki

  - IEEE TRANSACTIONS ON SIGNAL PROCESSING - Rok 2010

  The problem of identification of quasi-periodically varying dynamic systems is considered. This problem can be solved using generalized adaptive notch filtering (GANF) algorithms. It is shown that the accuracy of parameter estimates can be significantly increased if the results obtained from GANF are further processed using a cascade of appropriately designed filters. The resulting generalized adaptive notch smoothing (GANS) algorithm...

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• New Algorithms for Adaptive Notch Smoothing

  Publikacja

  • M. Niedźwiecki
  • M. Meller

  - IEEE TRANSACTIONS ON SIGNAL PROCESSING - Rok 2011

  The problem of extraction/elimination of a nonstationary complex sinusoidal signal buried in noise is considered. This problem is usually solved using adaptive notch filtering (ANF)algorithms. It is shown that accuracy of signal estimation can be increased if the results obtained from ANF are further processed using a cascade of appropriately designed filters. The resulting adaptive notch smoothing (ANS) algorithms can be employed...

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• Influence of the notch rounding radius on estimating the elastic notch stress concentration factor in a laser welded tee joint

  Publikacja

  • K. Niklas
  • J. Kozak

  - Rok 2012

  In recent years an increased interest of industry in sandwich-type metal structures can be observed. These structures consist of thin plates of 2.5 mm in thickness separated by stiffeners of different shapes and forms. Welds joining the plates and stiffeners are made on the outer side of the plates using laser welding technique. A locally focused source of heat causes the plate to melt creating a very narrow and elongated joint....

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• Tracking analysis of a generalized adaptive notch filter

  Publikacja

  • M. Niedźwiecki
  • P. A. Kaczmarek

  - IEEE TRANSACTIONS ON SIGNAL PROCESSING - Rok 2006

  Uogólniony adaptacyjny filtr wycinający służy do identyfikacji obiektów zmieniających się w sposób pseudookresowy. W pracy przedstawiono analizę własności śledzących takiego filtru a także omówiono zasady jego strojenia.

• BUILT IN PERFORMANCE EVALUATION FOR AN ADAPTIVE NOTCH FILTER

  Publikacja

  • M. Meller
  • M. Niedźwiecki

  - Rok 2013

  The problem of estimating instantaneous frequency of a non- stationary complexsinusoid (cisoid) buried in wideband no ise is considered. The proposed approach extends adaptive notc h filtering algorithm with a nontrivial performance assessme nt mechanism which can be used to optimize frequency tracking performance of the adaptive filter. Simulation results confi rm that the proposedextension allows one to improveaccuracyo f frequency...

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• Dejiny v pohybe – pohyb v dejinách

  Czasopisma

  ISSN: 2729-8760

• Generalized adaptive notch filter with a self-optimization capability

  Publikacja

  • M. Niedźwiecki
  • P. A. Kaczmarek

  - IEEE TRANSACTIONS ON SIGNAL PROCESSING - Rok 2006

  W pracy przedstawiono samonastrajalny wariant tzw. uogólnionego adaptacyjnego filtru wycinającego. Automatycznym strojeniem objęte są dwa współczynniki wzmocnienia adaptacji, odpowiedzialne za śledzenie amplitud i częstotliwości parametrów identyfikowanego obiektu.

• Multistage generalized adaptive notch filter with improved accuracy

  Publikacja

  • M. Meller

  - Rok 2015

  Generalized adaptive notch filters (GANFs) are estimators of coefficients of quasi-periodically time-varying systems. Current state of the art GANFs can deliver highly accurate estimates of system variations’ frequency, but underperform in terms of accuracy of the coefficient estimates. The paper proposes a novel multistage GANF with accuracy improved in this aspect. The processing pipeline consists of three stages. The preliminary...

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• Fast geometry scaling of UWB band-notch antennas

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - Rok 2016

  Implementation of band-notch capability plays an important role in the design of ultra-wideband (UWB) antennas. At the same time, appropriate sizing of antenna geometry parameters in order to precisely allocate the notch at the required frequency as well as to ensure sufficient reflection level is quite challenging and has to be based—for reliability reasons—on full-wave electromagnetic (EM) simulations of the structure. In this...

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• Automatic Optimization Of Adaptive Notch Filter’s Frequency Tracking

  Publikacja

  • M. Meller

  - Rok 2014

  Estimation of instantaneous frequency of narrowband com- plex sinusoids is often performed using lightweight algo- rithms called adaptive notch filters. However, to reach high performance, these algorithms require careful tuning. The paper proposes a novel self-tuning layer for a recently intr o- ducedadaptive notch filtering algorithm. Analysis shows th at, under Gaussian random-walk type assumptions, the resultin g solution converges...

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