Side sonar array sound barrier device with noise reducing

Abstract

The invention discloses a noise-reducing shipboard sonar array sound baffleplate device, mounted with a sound isolating layer, a sonar array and depression bar from a base array frame to outside; mounted with a sound baffleplate and a rubber pad form inside to outside between the sound isolating layer and the sonar array, two surfaces of the sound baffleplate are both pasted with above a pair of piezoelectric pieces, which connect with lead wires, where the lead wires near to the sonar array are led out through the rubber pad and the base array frame, and the lead wires of the piezoelectric piece near to the ship casing are led out through the sound isolating layer and the base array frame. It effectively reduces the noise radiated from the ship casing to the sonar array and increases the detection distance of the sonar.

Description

technical field [0001] The invention relates to a noise control device, in particular to a side sonar array sound barrier device with noise reduction. Background technique [0002] Sonar equipment has the functions of detecting, locating, identifying and tracking / moving targets in water. It is an important means for modern ships to detect targets in water, and has a wide range of applications in many fields such as military and civilian use. With the development of science and technology and the confrontation between identification and anti-identification, the performance of sonar is continuously improved and perfected. For example, due to the emergence of stealthy (covered anechoic tile) submarines, the detection performance of the more mature medium and high frequency active sonars has declined, and low frequency active sonars (Low frequency active sonar, LFAS) have emerged as the times require. This is because low-frequency sonar (including active and passive) has the fo...

AI Technical Summary

Problems solved by technology

This is because the operating frequency of low-frequency sonar is generally tens of hertz to several thousand hertz, and the radiated noise generated by ships during navigation, such as mechanical noise, propeller noise and hydrodynamic noise, as well as ocean background noise and sonar operating frequency Basically consistent, this brings great difficulties to the analysis of the signal reflected from the measured target and its radiation noise, and the conventional very useful filtering method will lose its reason for existence

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