Parallel coupling marine acoustic forecasting system and operation method

A forecasting system and marine technology, applied in ultrasonic/acoustic/infrasonic transmission systems, transmission systems, complex mathematical operations, etc., can solve the problem that there is no forecast system applicable to the global ocean acoustic field with a large time span, and there are few cross-researches on oceanography and acoustics. There are no problems such as underwater sound field prediction, and the effect of improving stability and calculation efficiency is achieved

Active Publication Date: 2021-08-13
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, research on the intersection of oceanography and acoustics is still scarce
The existing sound field models only have the function of simulation calculation, but not the function of underwater sound field p

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  • Parallel coupling marine acoustic forecasting system and operation method
  • Parallel coupling marine acoustic forecasting system and operation method
  • Parallel coupling marine acoustic forecasting system and operation method

Examples

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Example Embodiment

[0048] Example 1

[0049] A parallel coupled marine acoustic forecast system, including marine environment forecast modules, ocean-acoustic coupling modules, and marine acoustic transmission solution modules;

[0050] The role of the Marine Environmental Forecast Module throughout the system is to provide initialization environment input for the system;

[0051] Ocean-Acoustic Coupling Module, which is extracted for parameters initialization, terrain extraction, and marine environment parameters. By transforming the parameters of the ocean module including temperature, salinity, sea roughness output into an acoustic model, marine model and acoustics The model is combined.

[0052] The ocean acoustic transmission solution is the result of the calculation of the marine sound field, the result of the marine sound field and the active distance of the sonar. The model used is a sound field model. The sound field model is further improved to a three-dimensional model based on the prior ...

Example Embodiment

[0080] Example 2

[0081] Selected two points A (124.1 ° E, 26.38 ° N) and B (124.8 ° E, 24.63 ° N), topographic map Figure 5 Calculate the propagation of vertical section from A to B. Image 6 It is given that the high abnormality of the sea surface in the Okinawa trench region can be seen that A, b is also affected by the black tide vortex, A point is located in the low temperature zone of the sea surface, and the B point is high temperature in the sea surface. District, sound velocity profile is horizontal. A vertical cross-sectional sound field forecast is performed for A and B, first, interpolation is performed between two points A and B, interposed interval, acquisition of the latitude and latitude of each interpolated point; secondly, read from the ocean mode hydrological forecasting results from A to The temperature and salinity of the rectangular region near the B wiring is read from the global seafood database (GEBCO), and the two-dimensional linear interpolation is perfo...

Example Embodiment

[0082] Example 3

[0083] The sound field in the horizontal cross-azimuth horizontal cross section of a rotation of a rotation of A (124.1 ° E, 26.38 ° N) is calculated for the sound source point A (124.1 ° E, 26.38 ° N). For a sound field prediction around the horizontal profile around a, the aqueous deposition, temperature, salinity, sea surface roughness, and other predictions such as the circular region around A are first read. In the 360 ​​° square angle interval, each azimuth propagation path interval is 1km a water depth, temperature, salinity, etc., and data of each interpolated point is obtained by two-dimensional linear interpolation in the surrounding four latitude latitude points. The sound velocity is calculated from a water depth, temperature, salinity, and the like according to the empirical formula. The input sound field model such as data, sound source information, sea surface roughness, and sea floor parameters such as water depth, sound source information, sea s...

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Abstract

The invention relates to a parallel coupling marine acoustics forecasting system and an operation method, and belongs to the field of physical ocean and underwater sound field modeling fusion. The system comprises an ocean environment forecasting module, an ocean-acoustics coupling module and an ocean acoustics propagation solving module; the marine environment forecasting module provides initial environment input for the system; the ocean-acoustic coupling module has the functions of parameter initialization, terrain extraction and ocean environment parameter profile extraction, and an ocean model and an acoustic model are combined together by converting parameters, including temperature, salinity and sea surface roughness output, of an ocean module into input of the acoustic model; the marine acoustic propagation solving module is used for calculating a marine sound field and outputting results including the marine sound field and the sonar operating distance. The system realizes real-time forecast of an underwater sound field, can be transplanted to any high-performance computer system, and quickly realizes accurate calculation of a three-dimensional sound field and estimation of a global sea sonar operating distance.

Description

technical field [0001] The invention belongs to the field of modeling fusion of physical ocean and underwater sound field, and relates to a parallel coupled ocean acoustic forecast system and an operation method. Background technique [0002] At present, various sound propagation models have been established at home and abroad. According to the different numerical solutions to the wave equation, various models can be roughly divided into normal wave models, ray models, parabolic equation models and some joint models. The sound field model alone has developed relatively mature in terms of calculation. However, most of the existing calculations in the field of sound field are serial, and there are relatively few studies on parallel algorithms. When dealing with small-scale two-dimensional sound propagation problems, the existing sound field calculation models can meet the actual needs. However, in recent years, with the demand for three-dimensional sound propagation problems...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04B11/00H04B13/02G06F17/11
CPCH04B17/3912H04B11/00H04B13/02G06F17/11Y02A90/10
Inventor 杨春梅刘宗伟姜莹吕连港郭景松王关锁尹训强
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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