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
CN114417601AActive Publication Date: 2022-04-29NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2022-04-29

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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.
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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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