Mesoscale vortex underwater sound velocity field rapid estimation method based on satellite altimeter data

A technology of altimeter and scale vortex, which is applied in complex mathematical operations, design optimization/simulation, vibration measurement in fluids, etc., can solve problems such as timeliness, high calculation cost or high labor cost, and achieve low timeliness and robustness Good, the effect of improving the calculation speed

Active Publication Date: 2022-04-29
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In a word, there are inherent defects of timeliness, high calculation cost or high labor cost in obtaining mesoscale vortex underwater sound velocity field through in-situ observation and numerical simulation methods.

Method used

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  • Mesoscale vortex underwater sound velocity field rapid estimation method based on satellite altimeter data
  • Mesoscale vortex underwater sound velocity field rapid estimation method based on satellite altimeter data
  • Mesoscale vortex underwater sound velocity field rapid estimation method based on satellite altimeter data

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Embodiment Construction

[0061] figure 1 The implementation flow chart of the method of the present invention is given. The present invention is a fast estimation method of mesoscale vortex underwater sound velocity field based on satellite altimeter data. The Argo section collection within. With the help of climate products, the set of sound velocity disturbance profiles in the vortex is obtained, and the sound velocity disturbance profiles in the set are reorganized according to the dimensionless vortex center distance to obtain the two-dimensional normalized sound velocity disturbance structure of the vortex. Using polynomial fitting, a parameterized normalized sound velocity disturbance model is extracted from the two-dimensional normalized sound velocity disturbance structure of the vortex, and the model construction is completed. On the basis of the parametric model, the estimated value of the target vortex sound velocity disturbance can be obtained by scaling the parametric model by using the...

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Abstract

The invention belongs to the fields of physical ocean, ocean engineering, underwater acoustic engineering and the like, and relates to a method for quickly estimating an underwater sound velocity field of a mesoscale vortex based on satellite altimeter data, which establishes a function relationship between underwater sound velocity disturbance caused by the mesoscale vortex and sea surface height anomaly, and further obtains a parameterized vortex normalized sound velocity disturbance model. On the basis of the parameterized model, by means of satellite altimeter data with high space-time coverage rate, the underwater sound velocity disturbance field of the mesoscale vortex can be quickly inferred, and after a climate state background sound velocity field is superposed, the underwater sound velocity field of the mesoscale vortex is finally obtained, so that quick estimation of the underwater sound velocity field of the mesoscale vortex by only using the satellite altimeter data is realized.

Description

technical field [0001] The invention belongs to the fields of physical ocean, ocean engineering and underwater acoustic engineering, and relates to a fast estimation method of mesoscale eddy underwater sound velocity field based on satellite altimeter data. Estimation and near real-time acquisition. Background technique [0002] The mesoscale vortex is a mesoscale process ubiquitous in the ocean. As an independent closed water mass, there are significant differences in temperature and salinity structure from the surrounding seawater. The special temperature and salt structure of the mesoscale vortex leads to the change of the sound velocity field excited by it, so when the sound passes through it, it will change the propagation path and affect the energy distribution of the sound field. Fully grasping the underwater sound velocity field caused by mesoscale eddies is helpful to maximize the effectiveness of the sonar system and make effective decisions based on the dynamic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/15G06F17/11G01M10/00G01H3/00
CPCG06F30/20G01H3/00G01M10/00G06F17/15G06F17/11Y02A90/10
Inventor 张永垂陈雯陈思霖马丽娜任开军刘玉耀汪浩笛
Owner NAT UNIV OF DEFENSE TECH
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