Fast estimation method of underwater sound velocity field of mesoscale eddy based on satellite altimeter data

An altimeter and scale vortex technology, which is applied in the fields of physical ocean, marine engineering and hydroacoustic engineering, can solve the problems of timeliness, high computational cost or high labor cost, and can solve the problems of low timeliness, superior performance and high engineering application value. Effect

Active Publication Date: 2022-07-19
NAT UNIV OF DEFENSE TECH
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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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  • Fast estimation method of underwater sound velocity field of mesoscale eddy based on satellite altimeter data
  • Fast estimation method of underwater sound velocity field of mesoscale eddy based on satellite altimeter data
  • Fast estimation method of underwater sound velocity field of mesoscale eddy 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 method for rapidly estimating the underwater sound velocity field of mesoscale vortices based on satellite altimeter data. Argo Sections collection inside. Then, with the help of climatic state products, a set of sound velocity disturbance profiles in the vortex is obtained, and the two-dimensional normalized sound velocity disturbance structure of the vortex is obtained after recombining the sound velocity disturbance profiles in the set according to the dimensionless vortex center distance. Using polynomial fitting, the parameterized I-selected normalized sound velocity perturbation model is extracted from the two-dimensional normalized sound velocity perturbation structure of the vortex, and the model construction is completed. On the basis of the parametric model, the parametric model is scaled by using the sea surface height anomaly (SLA) and vortex ...

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Abstract

The invention belongs to the fields of physical ocean, ocean engineering, hydroacoustic engineering and the like, and relates to a method for rapidly estimating a mesoscale vortex underwater sound velocity field based on satellite altimeter data. function relationship, and then the parametric vortex normalized sound velocity perturbation model is obtained. Based on this parametric model, with the help of satellite altimeter data with high temporal and spatial coverage, the underwater sound velocity disturbance field of mesoscale eddies can be quickly inferred. A rapid estimation of the underwater sound velocity field of mesoscale eddy using only satellite altimeter data is achieved.

Description

technical field [0001] The invention belongs to the fields of physical ocean, ocean engineering, hydroacoustic engineering and the like, and relates to a method for rapidly estimating a mesoscale vortex underwater sound velocity field based on satellite altimeter data, which is suitable for using satellite altimeter data to rapidly estimate a mesoscale vortex underwater sound velocity field. Estimated and quasi-real-time acquisition. Background technique [0002] The mesoscale eddy is a ubiquitous mesoscale process in the ocean. As an independent closed water mass, it is significantly different from the surrounding seawater in terms of temperature and salt structure. The special temperature and salt structure of mesoscale vortices lead to the change of the sound velocity field excited by the mesoscale vortex, 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 vel...

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Application Information

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Patent Type & Authority Patents(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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