HYDROACOUSTIC MEASUREMENT SYSTEM Russian patent published in 2014 - IPC G01S15/08 

FIELD: measurement equipment.

SUBSTANCE: hydroacoustic navigation system comprises a navigation base, including a block of generation of emitted signals located on a shore station, and its outlets are connected with two hydroacoustic emitters installed on the bottom symmetrically to the navigation with different carrier frequencies of emitted signals, and also on-board equipment, including a reception-amplifying tract, a unit of processing of received signals and an indicator, at the same time the reception-amplifying tract is made as single-channel in the form of a non-directed hydrophone with a preamplifier connected to its outlet, and a unit of processing of received signals is made in the form of two band filters connected to the outlet of the preamplifier and tuned for frequencies of appropriate hydroacoustic emitters, a multiplicative mixer connected to outlets of band filters, a low pass filter connected to the outlet of the multiplicative mixer, frequency filters-discriminators, inlets of which are connected to the outlet of the low pass filter, and a summator, inlets of which are connected to outlets of the frequency filters-discriminators, and the outlet - to the inlet of the indicator.

EFFECT: increased reliability of determination of navigation parameters and reduced labour intensiveness of system calibration performance.

1 dwg