A method for correcting deviations of ship sea surface wind speed and wind direction measurement data

A technology for measuring data and sea surface wind speed, applied in image data processing, special data processing applications, instruments, etc., can solve the problems of true sea surface wind speed, true wind direction and the deviation of the real value of the environment, etc., to shorten the experiment time, save experiment resources, The effect of increasing the true wind speed

Active Publication Date: 2020-06-30
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

Since the wind sensor actually measures the distorted airflow, the output is the relative wind vector with deviation, and the vector is combined with the speed vector to obtain the sea surface true wind vector, which also causes the sea surface true wind speed, true wind direction and the real value of the environment There is a deviation

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  • A method for correcting deviations of ship sea surface wind speed and wind direction measurement data
  • A method for correcting deviations of ship sea surface wind speed and wind direction measurement data
  • A method for correcting deviations of ship sea surface wind speed and wind direction measurement data

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0028] The invention provides a method for correcting deviations of ship sea surface wind speed and wind direction measurement data. The specific steps are as follows: figure 1 shown.

[0029] Step 1: 3D geometric modeling of hull and superstructure. Establish a full-scale three-dimensional geometric model of the part above the waterline of the ship, and appropriately delete the hull surface attachment structures, such as railings, brackets, whip antennas, etc., according to the performance of the simulation calculation platform. Under the premise that the simulation calculation time allows, the external geometric characteristics of the local airflow disturbance around the wind measurement point should be preserved as much as possible.

[0030] Step 2: Simulation of the airf...

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Abstract

The invention discloses a method for correcting the deviation of sea surface wind speed and wind direction measurement data of a ship. The method comprises the following steps: carrying out three-dimensional geometric modeling on a ship body and a superstructure; simulating a blunt-body detour flow airflow field around the ship; carrying out regression modeling by virtue of a least square support vector machine; correcting measurement data of a wind detecting sensor; and solving a sea surface true wind speed and wind direction. High-quality sea surface average true wind speed and wind direction data obtained by virtue of the method can be used for calculating air-sea flux, constructing sea surface wind reanalysis data files, establishing a sea mode driving field, researching an ocean-atmosphere coupled mode and the like. Compared with a method for correcting deviation of sea surface wind by modeling experimental data of an actual ship, the method has the advantages that the blunt-body detour flow airflow field is acquired by virtue of computational fluid mechanics simulation, so that the experimental time can be shortened, and the experimental resources can be saved.

Description

technical field [0001] The invention relates to a deviation correction method for ship sea surface wind speed and wind direction measurement data. Background technique [0002] Ships are an important means of observation of meteorological elements such as sea surface wind speed and wind direction, and can provide long-term and continuous observation records. High-quality sea surface wind speed and wind direction observation data are used to ensure the safety of ship navigation, serve marine meteorological scientific research and maritime national defense and military construction. When the ship is sailing, the hull and superstructure block the free flow on the sea surface, which causes the airflow to be distorted. The distorted airflow passes through the installation position of the wind sensor and is measured by the wind sensor to obtain the relative wind vector, which deviates from the undisturbed sea surface free flow in speed and direction. Improving the measurement ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/15G06T17/10
CPCG06F30/15G06F30/20G06T17/10
Inventor 胡桐成文韩冰漆随平郭颜萍王东明邹靖宫永翔
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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