Skachkov V. Development of theory and practice of enhancement of adaptation quality of information radiotechnical systems to external interferences in conditions of intrasystem disturbances

Dissertation is dedicated to the development of theory and practice of adaptive signal reception in conditions of uncertainty caused by presence of unavoidable intrasystem disturbances in an information radiotechnical system. In this work the sources of intrasystem disturbances are classified and the generalizied dependence of adaptive system criterial functional from the first and the second statistical moment of intrasystem disturbances is specified. The mathematical models of unavoidable intrasystem disturbances of adaptive system parametric vector are provided. The complex procedures for estimated influence of intrasystem disturbances on results of linear algebra basic computing operations, applicable in adaptive processing of signals, are developed. The influence of intrasystem disturbances on adaptation quality of information radio systems to external interferences is investigated. The methods for enhancement of stability of adaptive radiotechnical systems against the presence of intrasystem disturbances are set up. The application of adaptive signal reception methods, which are stable against the intrasystem disturbances, in detection of radar targets in conditions of noise interferences and in restoration of images, received through the radio channel on the background of the external noise fields is demonstrated.