Acoustic monitoring system and method based on ambient sea noise

A monitoring system and marine environment technology, applied in the field of acoustic monitoring systems based on marine environmental noise, can solve problems such as time-consuming and labor-intensive, and achieve the effects of simple structure, high measurement efficiency, and strong mobility

Active Publication Date: 2017-02-22
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Depth sounders or shallow strata profilers are often fixed on the bottom of the ship or towed to measure water depth or seabed layer information. The difficulty and accuracy of observation are restricted by sea c

Method used

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  • Acoustic monitoring system and method based on ambient sea noise
  • Acoustic monitoring system and method based on ambient sea noise
  • Acoustic monitoring system and method based on ambient sea noise

Examples

Experimental program
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Embodiment Construction

[0043] Such as figure 1 As shown, an acoustic monitoring system based on marine environmental noise is characterized in that it includes an internal control computer 3 connected to a host computer 4 and a clock synchronization unit 5, a receiving unit 2 connected to the internal control computer 3 and the clock synchronization unit 5, The receiving unit 2 is connected to a hydrophone array 1 comprising 3 to 16 hydrophones; and a power supply unit 6 for supplying power to the internal control computer 3; the internal control computer 3 has a clock reference module 32 and a memory;

[0044] The above-mentioned receiving unit 2 includes a plurality of preamplifiers 21 respectively connected to each hydrophone in the receiving hydrophone array 1, and the signals received by the preamplifiers 21 are respectively passed through respective low-pass filters 22, which can be After the gain adjustment device 23 performs filtering and amplification processing, it is transmitted to the A / ...

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Abstract

The invention provides an acoustic monitoring system and method based on ambient sea noise. The method comprises the following steps: enabling an acoustic monitoring system to drift with the ocean current in the form of a buoy; under the control of an internal control computer, receiving ambient sea noise and carrying out filtering, gain amplification and sampling, and storing the sampled ambient sea noise data; and finally, carrying out hydrophone formation correction and inversion of seabed water depth and layered structure information. The system comprises the internal control computer connected with a receiving unit, a clock synchronization unit and an upper computer; and the receiving unit is connected with a hydrophone array comprising 3-16 hydrophones. The method is simple in steps, convenient to implement, high in measurement efficiency and reliable in monitoring result; and the monitoring system has the advantages of simple structure, low cost, and convenient use, and has a wide application value.

Description

technical field [0001] The invention belongs to the technical field of acoustic monitoring of marine environmental parameters, in particular to an acoustic monitoring system and method based on marine environmental noise. Background technique [0002] The interior of the ocean is full of sounds from a variety of sources, including various underwater organisms, natural physical processes, and the inevitable variety of human activities that exist at the same time. The acoustic characteristics of different sound sources, such as sound source level, spectral characteristics, space-time structure, etc., are quite different, which produce different imprints on the underwater acoustic environment. At the same time, the characteristics of each sound source are distorted by the special environment in which it is located. Therefore, marine environmental noise is of great significance to marine acoustic research, marine development, naval battlefield environment construction, and the ...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 林巨王宁徐铭王欢
Owner OCEAN UNIV OF CHINA
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