INCREASE OF STEALTH TRANSMISSION BASED ON TIMER SIGNALS AND LINEAR FREQUENCY MODULATION

Abstract

Recently, much attention has been paid to the research of the properties and methods of
forming complex noise-like signals to increase the noise immunity of radio communication systems operating
in the conditions of electronic conflict. Using such signals, the tasks are resolved to improve the noise
immunity and the main indicators of transmission stealth (energy, structural and information). For the task of
the synthesis noise-like signals using timer signal designs in combination with the method of spreading the
spectrum based on linear frequency modulation is proposed. The advisability of using timer signals is
justified by their properties, which increase the noise immunity and stealth transmission. In contrast to
positional codes, timer signals have more complex structure for construct signal construction. The initial
parameters for constructing timer signals allow the formation of various sets of signal constructions. Such
variational possibilities of constructing timer signals substantially increase the potential structural stealth of
the transmission. Also based on timer signals, noise immunity coding is implemented without additional test
elements. In the article A method for synthesizing noise-like signals based on linear frequency modulation
and timer signal designs is proposed.