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A method for simulating underwater acoustic signals, an underwater acoustic signal simulator, and imaging sonar

A technology of underwater acoustic signal and simulation method, which is applied in the field of acoustic signal simulation, can solve problems such as difficult underwater debugging, and achieve the effect of saving costs and simplifying debugging work

Active Publication Date: 2019-09-03
THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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Problems solved by technology

[0003] Before it is put into use, it is necessary to debug the equipment of the underwater imaging sonar. In the prior art, the imaging sonar needs to be debugged in the water. a certain impact

Method used

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  • A method for simulating underwater acoustic signals, an underwater acoustic signal simulator, and imaging sonar
  • A method for simulating underwater acoustic signals, an underwater acoustic signal simulator, and imaging sonar
  • A method for simulating underwater acoustic signals, an underwater acoustic signal simulator, and imaging sonar

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no. 1 example

[0061] Optionally, based on the first embodiment of the underwater acoustic signal simulation method, step S12 in this embodiment specifically includes:

[0062] S121. Establishing a spatial scattering model for underwater beam irradiation;

[0063] In this embodiment, in order to simulate the underwater environment on land, it is necessary to establish a spatial scattering model of underwater beam irradiation.

[0064] S122. Calculate the delay time of each channel signal by using the two-way Doppler effect formula of the imaging sonar through the established underwater beam irradiation space scattering model.

[0065] Wherein, the two-way Doppler effect formula in this embodiment is as follows:

[0066]

[0067]

[0068] In the formula, t 0 represents the starting time, t R , t T Respectively represent receiving and transmitting time, c is the sound velocity of sound wave in water. here r mp and r np Respectively represent the distance of the scattering voxel p ...

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Abstract

An embodiment of the invention discloses a submarine sound signal simulation method which is used for debugging an imaging sonar on the land, simplifies the debugging and reduces the cost. The embodiment of the present invention includes calculating a delay time of each channel signal based on an imaging distance between a target object and the imaging sonar; calculating a delay phase of each channel signal based on an imaging direction between the target object and the imaging sonar; simulating an submarine sound signal responsive to the imaging sonar when the target object receives a detection signal sent by the sonar based on the delay time and the delay phase; and sending the simulated submarine sound signal to the imaging sonar to enable the imaging sonar to use the submarine sound signal to simulate the target object. Embodiments of the invention also provide a submarine sound signal simulator and an imaging sonar used for debugging the imaging sonar on the land, simplifying the debugging and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of acoustic signal simulation, in particular to an underwater acoustic signal simulation method, an underwater acoustic signal simulator and imaging sonar. Background technique [0002] Underwater imaging sonar can generate high-definition sonar images that are almost equivalent to image quality images in water with zero visibility. Underwater imaging sonar is widely used, such as underwater pipeline detection, underwater search, underwater engineering facility inspection, etc. [0003] Before it is put into use, it is necessary to debug the underwater imaging sonar. In the prior art, it is necessary to put the imaging sonar in the water for debugging. certain impact. Contents of the invention [0004] An embodiment of the present invention provides a method for simulating an underwater acoustic signal, which can simulate an underwater acoustic signal when performing imaging sonar debugging, and can compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/52G01S15/89
Inventor 刘德铸
Owner THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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