Wavelet buoy main wave direction calculation method based on wave height weighting and vector averaging

A technology of wave buoy and calculation method, which can be used in measurement devices, complex mathematical operations, instruments, etc., can solve problems such as unpublished algorithms, and achieve the effects of improving reliability and accuracy, improving measurement accuracy, and improving resolution

Active Publication Date: 2019-05-31
HARBIN ENG UNIV
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Problems solved by technology

[0007] For buoys with the second type of working principle abroad, the method of measuring wave direction that can be found from public literature is basically the same as tha

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  • Wavelet buoy main wave direction calculation method based on wave height weighting and vector averaging
  • Wavelet buoy main wave direction calculation method based on wave height weighting and vector averaging
  • Wavelet buoy main wave direction calculation method based on wave height weighting and vector averaging

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings.

[0061] as attached Figure 4 As shown, it is a flow chart of the present invention; specifically, it can be divided into the following steps, the first step is data processing, the second step is to calculate the direction of a single wave, and the third step is to count the measurement results of a single wave direction in 16 angle intervals The counting ratio of , the fourth step is to calculate the main wave direction.

[0062] The wave buoy used in the embodiment of the present invention is a domestically produced SZF type wave buoy, which is deployed in Pingtan sea area for sea wave measurement experiments. The working position is 1-hour timing measurement mode. The buoy performs wave measurement at the whole hour of every day. The sampling interval is 0.5s, and the sampling points are 2048. The buoy will continuously collect 1024 seconds of wave data every hour,...

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Abstract

The invention belongs to the technical field of marine monitoring and relates to a wavelet buoy main wave direction calculation method based on trimming and heeling angle measurement outlier correction. The method includes the following steps that: a set of continuous raw data marked and measured by buoys is read, the data are divided into a plurality of individual wave periods according to an upper zero-cross point, the total number of the individual wave periods and the wave height of each wave period are determined; the lower zero-cross point of a single wave period is found out, instantaneous azimuth, trimming angle and heeling angle information at this moment is measured through a buoy, the single wave direction of the period is obtained through calculation, and then all individual wave directions in the set of data are obtained through calculation; 360 degrees are divided into 16 angular intervals, the number of individual wave waves appearing in each of the 16 angular intervalsis calculated, and a counting ratio is obtained; and the maximum wave height data of each wave period is calculated, and weighted vector averaging processing is performed with the obtained maximum wave height data adopted as a weight, and a main wave direction is calculated. The method has high accuracy.

Description

technical field [0001] The invention belongs to the technical field of ocean monitoring, and in particular relates to a method for calculating the main wave direction of a wave buoy based on the correction of the outlier value of pitch and heel angle measurement. Background technique [0002] Ocean waves play a leading role in many marine environmental factors. Ocean waves are a kind of fluctuation phenomenon that occurs on the ocean surface, and are the most important and complex natural phenomenon among the elements of ocean monitoring [1]. Ocean wave monitoring is one of the important tasks for human beings to understand, research, develop and utilize the ocean. Modern navigation, shipbuilding, military affairs, marine engineering, disaster monitoring and early warning and other fields all need to obtain high-precision real-time wave data, which is used to describe the quantity of wave characteristics. , such as wave height, wave direction, period, phase velocity, wavelen...

Claims

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Application Information

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IPC IPC(8): G01C13/00G06F17/16
Inventor 卢志忠吴鑫文保天殷庭巍陈世同黄玉周子涛
Owner HARBIN ENG UNIV
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