FIELD: radio engineering. SUBSTANCE: method involves reception of flow of information signals by receiver, in order to produce signal flow, in which each signal in signal flow comprises information constituent, noise constituent and distortion constituent. Then method involves detection of characteristics of distortion constituent, calculation of total distortion characteristics, representing each information constituent to provide information representation, detection of parasitic constituent from information representation and signal flow, detection of representation of noise constituent using parasitic constituent and distortion characteristics, and final calculation of signal flow utilization rate using information representation and representation of noise constituent. Corresponding device has signal receiver, detector of information constituent, detector of parasitic constituent, distortion characteristics detector, noise constituent detector, selector, scaling unit. EFFECT: increased dynamic range. 10 cl, 7 dwg
