FIELD: radio engineering; broadband-signal receivers. SUBSTANCE: check procedure based on extraction of useful signal from input mixture due to its correction is introduced in device upon taking decision on synchronization by useful signal; signal estimate is shaped during first stage of searching. Mentioned procedure enables discrimination between correct synchronization by useful signal and false synchronization by noise. Device has four multipliers, three filters, two amplitude detectors, resolving unit, search control unit, code generator, two switches, subtractor, comparison unit with threshold, adjustable amplifier, integrator, and three delay elements. EFFECT: eliminated false synchronization by noise. 3 dwg
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