On a Real-Time First-Order Difference Evaluation

• Autorzy: Ostalczyk P. , Duch P.
• Języki publikacji: EN

Abstrakty

EN

A subject of this paper is a real-time evaluation of the first-order backward difference of a measured signal with noise. It is wellknown that a difference evaluation strongly increase a noise amplitude so the signal prefiltering is necessary. A very short review of practically used filters is given. To perform the pre-filtering operation one mainly apply linear filters characterized by their impulse response shape: finite impulse response (FIR) and infinite impulse response (IIR). To enhance the filtering operation one successfully apply so called adaptive filters and these described by non-linear characteristics. In this paper a simple non-linear filtering algorithm is proposed and examined in the first-order backward difference of a measured signal.

Słowa kluczowe

EN

finite impulse response filter; Infinite Impulse Response; non-linear filtering

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 2012
• Tom: Vol. 17, no. 4
• Strony: 167--172
• Opis fizyczny: Bibliogr.8 poz., rys.

Twórcy

autor

Ostalczyk P.

• Institute of Applied Computer Science on Lodz University of Technology, Poland

autor

Duch P.

• Institute of Applied Computer Science on Lodz University of Technology, Poland

Bibliografia

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• [4] P. Ostalczyk, Discrete time functions, Wydawnictwo Politechniki Łódzkiej, Łód´z, 2001
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• [6] J.G. Proakis, Digital Signal Processing, Principles, Algorithms and Applications, Pearson Prentice Hall, Upper Saddle River 2007
• [7] L. Rutkowski, Filtry adaptacyjne i przetwarzanie sygnałów, Wydawnictwo Naukowo - Techniczne, Warszawa, 1994
• [8] A. Wojtkiewicz, Elementy syntezy filtrów cyfrowych, Wydawnictwo Naukowo - Techniczne, Warszawa, 1984