Detection, Parameter Estimation and Direction Finding of Periodic Pulse Signals
https://doi.org/10.32603/1993-8985-2025-28-3-73-84
Abstract
Introduction. Periodic pulse signals are used in various fields, including radar systems. The parameters of periodic pulse signals, such as period, pulse duration and shape, and radio frequency content, can vary significantly and, as a rule, are unknown a priori. Under the conditions of a priori uncertainty and low signal-to-noise ratios, the detection of periodic pulse signals, estimation of their parameters, and direction finding of the source is a non-trivial task.
Aim. To develop algorithms for detecting, estimating parameters, and direction finding of periodic pulse signals in the presence of low signal-to-noise ratios and the absence of a priori information about the parameters of a periodic pulse signal.
Materials and methods. The methods of statistical radio engineering, mathematical statistics, estimation of signal parameters against interference, and computer simulation were used.
Results. Simple-to-implement algorithms for detecting periodic pulse signals, evaluating their parameters, and direction finding of the source have been developed. The noise immunity characteristics of the algorithms obtained by computer simulation were successfully tested when receiving actual signals. The noise immunity of the algorithms was shown to increase with a decrease in the duty ratio of the signal. The developed algorithms allow periodic pulse signals to be distinguished from signals of wireless communication systems, such as GSM, UMTS, LTE, Wi-Fi, 5G. The latter signals, although having a periodic component, are not pulsed signals.
Conclusion. The developed algorithms function successfully in the absence of a priori information about the parameters of a periodic pulse signal and at low signal-to-noise ratios (up to –15 dB). A significant gain in the noise immunity of direction finding was achieved in comparison with the standard phase difference algorithm. The parameters of a periodic pulse signal evaluated using the developed algorithms can be used for source identification.
About the Authors
V. B. Manelis
АО "ИРКОС"
Russian Federation
Russian Federation
Vladimir B. Manelis, Dr Sci. (Eng.) (2010), leading researcher
The author of more than 70 scientific publications. Area of expertise: communication systems; radiomonitoring; algorithms for receiving and processing signals.
101b, Rabochiy Ave., Voronezh 394024
I. S. Faustov
АО "ИРКОС"; ФГБОУ ВО "Воронежский государственный технический университет"
Russian Federation
Russian Federation
Ivan S. Faustov, engineer in Radio-electronic devices and systems (2021), Postgraduate student of the Department of Radio Engineering; researcher
The author of 11 scientific publications. Area of expertise: radiomonitoring; algorithms for receiving and processing signals; digital signal processing.
101b, Rabochiy Ave., Voronezh 394024
V. A. Kozmin
АО "ИРКОС"
Russian Federation
Russian Federation
Vladimir A. Kozmin, Cand. Sci. (Eng) (1989), Associate Professor (1989), Director for scientific work
The author of more than 200 scientific publications. Area of expertise: radiomonitoring; algorithms for receiving and processing signals; digital signal processing.
101b, Rabochiy Ave., Voronezh 394024
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Review
For citations:
Manelis V.B., Faustov I.S., Kozmin V.A. Detection, Parameter Estimation and Direction Finding of Periodic Pulse Signals. Journal of the Russian Universities. Radioelectronics. 2025;28(3):73-84. (In Russ.) https://doi.org/10.32603/1993-8985-2025-28-3-73-84
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