FIELD: hydroacoustics.
SUBSTANCE: invention belongs to the field of hydroacoustics, particularly to the hydroacoustic navigation systems with bottom beacons. The device includes two hydroacoustic beacons, the two-channel receiver-amplifier and the multi-channel indicator connected to the output of one of the channels. Each channel of the receiver-amplifier includes a multi-link commutable delay circuit whose output is connected to the respective input of the indicator. The delay time of each link of the same delay circuit equals to a half of the delay time of each link of another delay circuit.
EFFECT: increase of efficiency of the vessel navigation along the navigation channel.
2 dwg
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