SU1840269A1 - Noise-like signal detecting device - Google Patents

Abstract

FIELD: broadband radio communication systems using noise-like signals.SUBSTANCE: proposed noise-like signal detecting device has controlled information pseudorandom-sequence (IPRS) and additional synchronizing pseudorandom-sequence ((ASPRS) generators whose first inputs are connected to output of controlled clock generator; inputs of the latter are connected to respective outputs of decision unit whose inputs are connected to respective outputs of decision unit; inputs of this unit are connected to three outputs of ASPRS generator through correlator unit; first input of information correlator, fourth input of correlator unit, and input of threshold shaper are integrated and function as device input; two other inputs of decision unit are connected to outputs of information correlator and threshold shaper; two other outputs of decision unit are connected to inputs of IPRS and ASPRS generators, respectively; other input of information correlator is connected to output of IPRS generator whose other output is connected to third input of ASPRS generator; novelty is introduction of additional decision unit, gating-pulse shaper, and matched filter; input of the latter is connected to device input and output, to first inputs of gating-pulse shaper and additional decision unit whose two other inputs are connected to respective output of decision unit and to output of threshold shaper; output of additional decision unit is connected to second input of gating-pulse shaper one of whose outputs is connected to additional inputs of decision unit and IPRS generator and other output, to decision unit.EFFECT: reduced noise-like signal search time.1 cl, 2 dwg