METHOD OF DETECTING SIGNALS

FIELD: underwater acoustics. ^ SUBSTANCE: method allows detecting sonar signals inside real channel of propagation when distortion of signal is taken into account which distortions appear at reflection and dissipation of waves at boundaries of channel as well as phenomena of signal total internal re...

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Hauptverfasser: MALYJ V.V, SOTNICHUK S.V, BUTYRSKIJ E.JU, SAPRYKIN V.A
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creator MALYJ V.V
SOTNICHUK S.V
BUTYRSKIJ E.JU
SAPRYKIN V.A
description FIELD: underwater acoustics. ^ SUBSTANCE: method allows detecting sonar signals inside real channel of propagation when distortion of signal is taken into account which distortions appear at reflection and dissipation of waves at boundaries of channel as well as phenomena of signal total internal reflection. Method of detection of bandwidth signals consists of operations of mutual-correlation comparison of accepted realization with copy of irradiated signal and making decision on detection. Accepted realization of mutual-correlated signal is compared with Gilbert-image of copy of irradiated signal; results of mutual-correlation comparison of accepted realization with reference and Gilbert-image of reference of irradiated signal are squared and summed. Calculated value is compared with threshold one. ^ EFFECT: increased noise immunity; extended radar range. ^ 1 dwg
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subjects ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
title METHOD OF DETECTING SIGNALS
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