Filtering Signals against Noise near the Attractor

V. I. Nefedov; S. A. Reshetnyak; G. N. Tret’yakov; E. A. Zasovin

doi:10.1134/S1064226919020165

Filtering Signals against Noise near the Attractor

Authors: Nefedov V.I.¹, Reshetnyak S.A.¹, Tret’yakov G.N.¹, Zasovin E.A.¹
Affiliations:
1. MIREA—Russian Technological University
Issue: Vol 64, No 2 (2019)
Pages: 153-157
Section: Theory and Methods of Signal Processing
URL: https://journals.rcsi.science/1064-2269/article/view/200348
DOI: https://doi.org/10.1134/S1064226919020165
ID: 200348

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Abstract

In this paper, we numerically studied the interaction of signal and noise in a second-order nonlinear active filter. The filtering of the signal against a background of intense noise through a nonlinear filter with a bandpass filter at output is analyzed. The output signal-to-noise ratio is established as more than three times higher than the similar ratio without using a nonlinear filter.