DETECTION OF A HARMONIC SIGNAL AGAINST THE BACKGROUND OF A NONSTATIONARY GAUSSIANINTERFERENCE WITH COMPLEX SPECTRUM

Authors

  • Igor Prokopenko Department of Telecommunication and Radioelectronic Systems of National Aviation University, Kyiv, Ukraine, Ukraine https://orcid.org/0000-0003-4169-3774
  • Igor Omelchuk Department of Telecommunication and Radioelectronic Systems of National Aviation University, Kyiv, Ukraine, Ukraine
  • Anastasiia Dmytruk Department of Telecommunication and Radioelectronic Systems of National Aviation University, Kyiv, Ukraine, Ukraine https://orcid.org/0000-0002-6410-4680
  • Yuliia Petrova Department of Telecommunication and Radioelectronic Systems of National Aviation University, Kyiv, Ukraine, Ukraine https://orcid.org/0000-0002-3768-7921

DOI:

https://doi.org/10.20535/2411-2976.22021.5-15

Keywords:

harmonic signal, detection-measurement, autoregressive models, a priori uncertainty

Abstract

Background. Modern radar stations for various purposes operate in the conditions of interference created by the imprints of the radar signal from the background surface, from metrological formations (precipitation, clouds, etc.) and artificial radiation sources. Ensuring the operation of the radar in such difficult conditions requires the construction of adaptive signal processing algorithms that have high efficiency and maintain them when changing signal-to-noise situations.

Objective. The purpose of the paper is creation of an adaptive algorithm for detecting a harmonic signal against the background of spatially correlated interference and estimating its parameters.

Methods. Construction of a two-dimensional autoregressive model of a mixture of correlated spatial noise and harmonic signal and application of the empirical Bayesian approach to the synthesis of an adaptive algorithm for detecting and evaluating signal and noise parameters.

Results. A two-dimensional adaptive space-time algorithm for detecting a radar signal reflected from a moving target against the background of a space-correlated interference is synthesized. The analysis of the efficiency of the algorithm by the Monte Carlo method is carried out.

Conclusions. It is shown that the empirical Bayesian approach is an effective working methodology in solving the problem of detecting a harmonic signal and estimating its parameters under conditions of interference with a complex frequency spectrum under different conditions of a priori uncertainty of their parameters.

References

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Published

2021-12-21

How to Cite

Prokopenko, I., Omelchuk, I., Dmytruk, A., & Petrova, Y. (2021). DETECTION OF A HARMONIC SIGNAL AGAINST THE BACKGROUND OF A NONSTATIONARY GAUSSIANINTERFERENCE WITH COMPLEX SPECTRUM. Information and Telecommunication Sciences, 12(2), 5–15. https://doi.org/10.20535/2411-2976.22021.5-15

Issue

No. 2 (2021)

Section

Статті

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