Filtration of weak signals in white Gaussian noise

Authors

  • A. S. Makarenko National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev
  • A. V. Melnichuk National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev

DOI:

https://doi.org/10.20535/RADAP.2013.53.32-41

Keywords:

filtering, white noise, base signal, sampling, differentiator, energy spectrum, delta function

Abstract

Introduction. The level of desired signals, in some cases, is comparable to the level of in-trinsic noise source in radio and electronic systems. It creates substantial difficulties in the processing of these signals. The problem of the weak signals detecting from the additive mix-ture of signal and noise is characteristic for digital communication.

Object of the work. The article is devoted to solving the problem of detecting the weak analog and digital signals on a background of strong noise providing much larger gain in the signal / noise ratio compared to the existing technical solutions. The essence of the new signal processing method is described in this article. The condition for achieving the task is obtain-ing the maximum gain in the signal / noise ratio greater than 50 dB for sensitive amplifier. The advantages of the product, effective for information processing with low power, are de-scribed.

Conclusions. The dignity of the considered method and devices is a significant weakening of the noise amplifiers and noise input signal (in receiver antenna). It creates conditions for the development of devices and systems with new functionality. Sensitive amplifier can be used for postdetector processing the mixture of signal and noise in digital communication sys-tems, radar, sonar and underwater acoustic communication.

Author Biographies

A. S. Makarenko, National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev

Cand. of Sci (Tech), Assoc. Prof.

A. V. Melnichuk, National Technical University of Ukraine, Kyiv Politechnic Institute, Kiev

undergraduate

References

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Published

2013-07-17

How to Cite

Макаренко, О. and Мельничук, О. (2013) “Filtration of weak signals in white Gaussian noise”, Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, 0(53), pp. 32-41. doi: 10.20535/RADAP.2013.53.32-41.

Issue

No. 53 (2013)

Section

Radio Circuits and Signals

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