Suhorada A. Systems of reception of signals in channels with statistically non-uniform environments

Object - process of formation of signals in channels with statistically heterogeneous mediums; the purpose - development of methods and systems of signal detection which have passed the communication channel with statistically heterogeneous mediums and additive noises, a synthesis of algorithms and systems of signal detection, the analysis of their noise immunity at any casual parameters of signals and noises; methods - the theory of functional analysis, the theory of random processes, probability theory, mathematical statistics; novelty - are established optimum (quasi-optimal) methods and systems of signal detection, have passed the communication channel with statistically heterogeneous mediums at presence of additive noises on the basis of Markov approach; the main scientific results: - the further evolution of model of the communication channel with statistically heterogeneous mediums (channels with a time scatter and on frequency); - developed methods and algorithms optimum and quasi-optimal reception of radiosignals in channels with statistically heterogeneous mediums at presence of time fading and the additive noises of any structure in particular concentrated on a spectrum of noises; -for the first time designed circuit optimum and quasi-optimal systems of signal detection in channels with statistically heterogeneous mediums; synthesized at presence of time fading and additive noises; opportunities of use of aggregate signals for message transfer service on channels with statistically heterogeneous mediums; -are investigated at use Markov models of the channel; - leaded analyse of noise immunity of the gained algorithms and systems of signal detection in channels with statistically heterogeneous mediums which has shown their tall enough service capability that provides an optimality of reception of processing of signals;-used the gained systems nonlinear differential the equations for estimated values of parameters of filtrated radiosignals and for cumulants calculation of noise immunity of the synthesized receiving devices is lead at various aspects of modulation. The analysis of results of calculations has allowed to make a leading-out on an optimality of the synthesized algorithms. Noise immunity of the synthesized systems of reception answers noise immunity of reception at distribution and the coherent addition of separate beams; results - the algorithm of reception of a frequency-modulated radiosignal synthesized in the dissertation on a carrier frequency 151Мгц and with a modulation index 3 is used in modification of a mobile radio communication system "Orion-4"