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

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...

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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 that of the above-mentioned domestic related literature. Research work on wave direction measurement with heel and pitch sensors, but no specific algorithm has been published[15]

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