Fedula M. The improving detection of periodic radio signals by means of the devices with chaotic dynamics

The thesis is devoted to theoretical and applied research on detection of periodic radio noises in the use of chaotic systems, and the development of structural and schematic solutions in existing and future radio equipment and radar on the basis of the theory of chaotic dynamics. To achieve this goal took the further development of a mathematical model of detection of periodic signals using chaotic system Duffing which, unlike known, takes into account the offset phase trajectory along the fractal structure Poincare section under the influence of periodic components of the input signal. Results of the study process for the detection of periodic radio phase portrait of the chaotic system installed at the receiver input, show increased sensitivity and noise immunity receiving periodic radio using developed methods whose implementation provides the ability to detect periodic signals with minimal signal/noise ratio, 1,8 times lower than for known devices, based on chaotic systems.