Self-noise test system and level test method for ship sonar platform

An experimental test and self-noise technology, which is applied in radio wave measurement systems, sustainable transportation, instruments, etc., can solve the problems of lack of test data verification, achieve the effect of improving work efficiency, strong applicability, and avoiding frequency band testing

Active Publication Date: 2019-01-04
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the self-noise of the ship sonar platform is mainly based on the simulation calculation of the software. However, the software simulation can only reflect the self-noise characteristics of the ship sonar platform to a certain extent, and there is a lack of test data verification.

Method used

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  • Self-noise test system and level test method for ship sonar platform
  • Self-noise test system and level test method for ship sonar platform
  • Self-noise test system and level test method for ship sonar platform

Examples

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Effect test

Embodiment 1

[0025] A self-noise test system for a ship sonar platform, the test system includes a computer, a signal source generator, a power amplifier, a signal transmitting component composed of an excitation source, a hydrophone, a signal receiving converter, a band-pass filter, a signal A signal acquisition and processing recording component composed of a collector and a computer for collecting signals; if the signal collector has a band-pass filter function, the band-pass filter can be removed, and the signal receiving converter is directly connected to the signal collector;

[0026] The instruments and equipment are connected and transmitted through data transmission lines. The excitation sources include the excitation of the composite rod piezoelectric exciter for simulating hydrodynamic noise, the excitation of high-power broadband pulse mechanical exciter for simulating mechanical vibration noise, and the excitation for simulating propeller water-borne noise. dipole emitting tran...

Embodiment 2

[0033] combine figure 1 A ship sonar platform self-noise test and test system is mainly composed of a computer, a signal source generator, a power amplifier, an excitation source, a hydrophone, a signal receiving converter, a band-pass filter, and a signal collector. The excitation source is connected to the computer to form the excitation source signal transmitting end through the signal data transmission line through the power amplifier and the signal source generator; The acquisition computer is connected to form a signal acquisition recording terminal;

[0034] Excitation sources include composite rod piezoelectric exciter excitation for simulating hydrodynamic noise, high-power broadband pulse mechanical exciter excitation for simulating mechanical vibration noise, and dipole transmitting transducer excitation for simulating propeller water-borne noise;

[0035] The composite rod piezoelectric exciter for simulating hydrodynamic noise is excited through the fixed device ...

Embodiment 3

[0039] When multiple noise sources are tested independently or in parallel, a self-noise test system for a ship sonar platform is as follows: figure 2 As shown, the system includes a computer 1, an arbitrary function signal generator 2, a first power amplifier 5 and a hydrodynamic noise simulation part composed of a symmetrically installed simulated hydrodynamic noise excitation source 8, a computer 1, an acquisition instrument transmitter 3, The bulkhead vibration mechanical noise simulation part composed of the second power amplifier 6 and the simulated mechanical noise excitation source 10 high-power broadband pulse mechanical exciter, the computer 1, the signal source 4, the second power amplifier 7 and the simulated propeller noise excitation source 11 The propeller noise simulation part formed by the dipole transmitting transducer, and the data acquisition part formed by the array position hydrophone 12, the data collector 13 and the data acquisition computer 14; the set...

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Abstract

The invention discloses a self-noise test system and level test method for a ship sonar platform and belongs to the field of underwater noise control engineering. According to the invention, three signal source generators are controlled through a computer to generate excitation signals, and so the three signal source generators generate simulated hydrodynamic noise, simulated mechanical noise andsimulated propeller noise. Then data is collected and analyzed through a signal acquisition and recording end. A sonar platform self-noise test under a single noise resource effect can be carried out,a platform self-noise test under the effects of multiple noise resources at the same time can be implemented, test data in a whole wide frequency band can be obtained at a time, tests in different frequency bands are avoided, the work efficiency is improved, and the self-noise characteristics of a sonar chamber under various working conditions are more realistically simulated, and the establishment of a self-noise test system for the ship sonar platform is achieved.

Description

technical field [0001] The invention relates to the field of underwater noise control engineering, in particular to a ship sonar platform self-noise test system and level test method. Background technique [0002] The bow sonar of a ship is an important part of the sonar system of a surface combat ship. Most combat ships are equipped with various types of underwater acoustic equipment for detecting, locating, and identifying underwater targets such as submarines and torpedoes. The survivability and survivability are closely related to the detection ability of sonar equipment, and the self-noise in the sonar platform directly affects the detection distance of ship sonar. It is particularly important to test and predict the self-noise in the ship sonar platform, and then take targeted measures to effectively control the self-noise of the sonar platform to ensure the normal operation of the sonar system. [0003] The self-noise of the sonar platform mainly comes from three asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/52
CPCG01S7/52004Y02T90/00
Inventor 靳国永张艳涛叶天贵周佳良陈明飞王雪仁刘志刚林壮李平
Owner HARBIN ENG UNIV
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