Method for inverting sea wave height and period based on water pressure

A technology of water pressure and pressure, which is applied in the field of wave element measurement in the ocean, can solve complex and other problems, and achieve the effect of small water interference and strong anti-adhesion ability

Inactive Publication Date: 2017-07-21
TIANJIN UNIV
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Problems solved by technology

[0003] In view of this, the present invention provides a method for retrieving ocean wave height and period based on water pressure and its operation method, with the purpose of improving the measurement accuracy of ocean wave elements and avoiding the problem of complex data processing, so as to achieve high temporal and spatial resolution of ocean wave height and period measurement, see description below

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  • Method for inverting sea wave height and period based on water pressure
  • Method for inverting sea wave height and period based on water pressure
  • Method for inverting sea wave height and period based on water pressure

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Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

[0014] The embodiment of the present invention introduces a method for retrieving the wave height and period of ocean waves based on water pressure, with the purpose of realizing the measurement of wave height and period of ocean waves with high temporal and spatial resolution. The specific implementation steps are as follows:

[0015] 1. Place the pressure wave height meter at the underwater z point (the seabed is the best) for fixed-point long-term observation, and obtain the pressure intensity information by measuring the pressure change of the water body.

[0016] 2. Segment the pressure intensity data to remove its linear change trend; for example, for a segment of 2 minutes, subtract the average value of the segment from each segment of measurement data to remove its linea...

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Abstract

The invention relates to a method for inverting sea wave height and period based on water pressure, comprising: using a water-pressure-type wave height meter to measure underwater pressure intensity to obtain water pressure intensity time-series data; subjecting the water pressure intensity time-series data to Flourier transform to obtain a pressure spectrum; calculating pressure correction coefficient of sea wave by considering linear trend change of water pressure and attenuation of pressure wave in depth under water-layer filtering effect, and correcting the water pressure; inverting sea wave height and period of high temporal-spatial resolution according to spectral moment method or by subjecting the pressure spectrum to Fourier inverse transform and using zero-crossing separable wave method.

Description

technical field [0001] The invention relates to the field of wave element measurement in the ocean, in particular to a method for inverting wave height and cycle based on water pressure. Background technique [0002] The wave height and period of ocean waves are one of the key contents of ocean observation research. The most basic thing to observe the wave height and period process of ocean waves on site is to clarify the spatio-temporal variation law of waves and provide a basic understanding for ocean fluctuation laws. Early ocean wave observations were performed visually, which was prone to large errors, discontinuous data, and time-consuming and labor-intensive. Afterwards, digital recording is used, that is, the height of the wave front is recorded digitally, and the accuracy is lacking. The measurement technology of using the water pressure intensity signal of the hydraulic wave height meter to invert the wave height and period of the ocean wave has high precision, is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00
CPCG01C13/002
Inventor 凡仁福赵伟聂红涛汪嘉宁赵亮
Owner TIANJIN UNIV
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