Mathematical Model of the Current Time of a Five Fragment Nonlinear Frequency Modulated Signal

Oleksandr Kostyria; Andrii Hryzo; A. Fedorov; Hennadii Khudov; Yuriy Solomonenko; Sergii Ushakov

doi:10.3849/aimt.01986

Authors

Oleksandr Kostyria Ivan Kozhedub Kharkiv National Air Force University
Andrii Hryzo Ivan Kozhedub Kharkiv National Air Force University
A. Fedorov Ivan Kozhedub Kharkiv National Air Force University, Kharkiv, Ukraine
Hennadii Khudov Ivan Kozhedub Kharkiv National Air Force University
Yuriy Solomonenko Ivan Kozhedub Kharkiv National Air Force University
Sergii Ushakov National Space Facilities Control and Test Center

DOI:

https://doi.org/10.3849/aimt.01986

Keywords:

low-altitude target, passive jammer, nonlinear frequency modulation, autocorrelation function, maximum level of side lobes

Abstract

The paper proposes a mathematical model of a five-fragment nonlinear frequency-modulated signal with a reduced level of the lateral lobes of the autocorrelation function. The decrease in the maximum level of the lateral lobes of the autocorrelation function is due to an increase in the number of signal fragments, a rational choice of their frequency-time characteristics, and compensation of frequency-phase distortions at their junctions. It is shown that this leads to an improvement in the spectral characteristics of the resulting signals. An estimate of the quality of detection of the synthesized signal against the background of reflections from local objects is obtained.

Author Biographies

Oleksandr Kostyria, Ivan Kozhedub Kharkiv National Air Force University

Dr. Sc., Senior Research

Lead Researcher. Ivan Kozhedub Kharkiv National Air Force University
Andrii Hryzo, Ivan Kozhedub Kharkiv National Air Force University

Ph. D., Associate Professor.

Head of the Research Laboratory, Ivan Kozhedub Kharkiv National Air Force University
Hennadii Khudov, Ivan Kozhedub Kharkiv National Air Force University

Dr. Sc., Professor

Head of Department, Ivan Kozhedub Kharkiv National Air Force University
Yuriy Solomonenko, Ivan Kozhedub Kharkiv National Air Force University

Ph. D.

Deputy Head of the Faculty of Educational and Scientific Work. Ivan Kozhedub Kharkiv National Air Force University
Sergii Ushakov, National Space Facilities Control and Test Center

Ph. D.

Chief specialist of the department, National Space Facilities Control and Test Center

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