Composite standard vector hydrophone

Abstract

The invention provides a compound type scalar vector hydrophone which comprises a fairing, a velocity hydrophone, springs, silicon oil, pressure hydrophones, flanges and multiple paths of signal multiplexing circuits, wherein the velocity hydrophone is suspended on the inner wall of the fairing through four same orthogonally-opposite springs, the four averagely-distributed pressure hydrophones are arranged at the bottom end of an inner cavity of the fairing through the flanges, distances between the spherical center of the velocity hydrophone and the centers of the four peruse hydrophones are equal, and are equal to the distance between every two pressure hydrophones, the silicon oil is filled in the inner cavity of the fairing, and the multiple paths of signal complexing circuits are used for receiving signals output by the four pressure hydrophones, processing the signals to generate sound pressure signals and four paths of array signals of the vector hydrophone and outputting the sound pressure signals and the four paths of array signals. According to the compound type scalar vector hydrophone, the velocity hydrophone and a plurality of sound pressure hydrophones, which are mutually independent on a mechanical structure, are used as discrete modules, so that the velocity hydrophone and the sound pressure hydrophones meet a certain relation on the spatial arrangement to be combined into the compound type scalar vector hydrophone.

Description

technical field [0001] The invention relates to a composite scalar vector hydrophone, which is applied to an underwater target detection system. Background technique [0002] At present, the co-vibration vector hydrophone used in the underwater acoustic target detection system obtains the sound intensity information of the underwater sound field, which consists of two parts of the signal—sound pressure and particle vibration velocity, and its sound pressure (scalar) and vibration velocity ( The sensitive elements of the vector) channel are packaged on the same structural component, and the maintenance and replacement of parts are inconvenient; and due to the limitation of its own size, the wavelength of the received signal must be greater than 6 times the scale of the vector hydrophone itself, so the external dimension must be In the case of , its working frequency band is correspondingly concentrated in the low frequency band, and high frequency signals cannot be used, and ...

AI Technical Summary

Problems solved by technology

[0002] At present, the co-vibration vector hydrophone used in the underwater acoustic target detection system obtains the sound intensity information of the underwater sound field, which consists of two parts of the signal—sound pressure and particle vibration velocity, and its sound pressure (scalar) and vibration velocity ( The sensitive elements of the vector) channel are packaged on the same structural component, and the maintenance and replacement of parts are inconvenient; and due to the limitation of its own size, the wavelength of the received signal must be greater than 6 times the scale of the vector hydrophone itself, so the external dimension must be In the case of , its working frequency band is correspondingly concentrated in the low frequency band, and high frequency signals cannot be used, and the working bandwidth is relatively narrow

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