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Combined with woa2018 model and measured temperature and salinity data to reconstruct full-depth sound velocity profile method

A technology of WOA2018 and sound velocity profile, which is applied in the direction of measuring devices, instruments, design optimization/simulation, etc., can solve the problems of not being able to detect the full depth and the hidden quality of the measurement results, and achieve the effect of improving reliability

Active Publication Date: 2020-11-10
THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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Problems solved by technology

Affected by harsh operating conditions, operating time, and equipment performance at sea, it is often impossible to detect full-depth, high-precision sound velocity profiles when operating in deep seas
Although the historical temperature and salinity model can be used to query the full-depth temperature and salinity information at the same location as the measured temperature and salinity data, and then calculate the full-depth sound velocity profile, but due to the limitation of the temperature-salinity model's own space scale and time scale, the full-depth sound velocity There are large errors in the profile, which will bring quality problems to the multi-beam submarine topographic measurement results in the deep and open sea

Method used

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  • Combined with woa2018 model and measured temperature and salinity data to reconstruct full-depth sound velocity profile method
  • Combined with woa2018 model and measured temperature and salinity data to reconstruct full-depth sound velocity profile method
  • Combined with woa2018 model and measured temperature and salinity data to reconstruct full-depth sound velocity profile method

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Embodiment Construction

[0061] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0062] A method for reconstructing the full-depth sound velocity profile by combining the WOA2018 model and the measured temperature and salinity data, such as figure 1 shown, including the following steps:

[0063] Step 1. According to the effective measurement depth of the XCTD and CTD measured temperature and salinity data as the boundary, the water depth is divided into two parts within the effective measurement depth and outside the effective measurement depth.

[0064] Step 2. Use the measured temperature profile and salinity profile within the effective measurement depth.

[0065] Step 3. In addition to the effective measurement depth, the WOA2018 model data outside the effective measurement depth is revised based on the data at the effective measurement depth, and a full-depth, high-precision temperature profile and salinity profile are constructed. ...

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Abstract

The invention relates to a method for reconstructing a full-depth sound velocity profile by combining the WOA2018 model and the measured temperature and salt data. and two parts outside the effective measurement depth; within the effective measurement depth, the measured temperature profile and salinity profile are used; beyond the effective measurement depth, the WOA2018 model beyond the effective measurement depth is revised based on the data at the effective measurement depth, and a full Depth, high-precision temperature profiles and salinity profiles; use the obtained full-depth, high-precision temperature profiles and salinity profiles to calculate full-depth, high-precision sound velocity profiles. The invention can solve the quality problem of the seabed topographic measurement results caused by the defect of sound velocity profile in the previous deep sea multi-beam bathymetry measurement, and effectively improve the reliability of the deep sea multi-beam seabed topographic measurement results.

Description

technical field [0001] The invention belongs to the technical field of marine measurement, in particular to a method for reconstructing a full-depth sound velocity profile specially applied to a joint WOA2018 model and actual temperature-salinity data for carrying out multi-beam bathymetry in deep and open seas. Background technique [0002] To carry out multi-beam bathymetry, sound velocity profile measurement must be carried out at the same time. When carrying out comprehensive surveys in deep and open seas, in order to meet the needs of marine hydrographic surveys and marine surveying and mapping, especially multi-beam bathymetry, Expendable Conductivity-Temperature-Depth (XCTD) is usually launched in the way of navigation or Conductivity in the way of mooring. -Temperature-Depth (CTD) to measure the temperature and salinity of seawater, and then calculate the sound velocity profile. Affected by harsh operating conditions, operating time, and equipment performance at sea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G01D21/02
CPCG01D21/02G06F30/20
Inventor 黄辰虎吴美平翟国君王雪莹赵健高飞申家双陆秀平吴太旗黄贤源王耿峰
Owner THE CHINESE PEOPLES LIBERATION ARMY 92859 TROOPS
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