Wave buoy main wave direction computation method based on vertical-horizontal dip angle measurement outlier correction

Abstract

The invention belongs to the technical field of the ocean monitoring, and specifically relates to a wave buoy main wave direction computation method based on vertical-horizontal dip angle measurementoutlier correction. The method comprises the following steps: reading a group of continuous original data measured and recorded by a buoy, performing outlier processing on the original vertical dip angle data and horizontal dip angle data measured by the buoy by using a screening and replacement method; according to the wave height information measured through the buoy, splitting the group of data after the outlier correction into multiple single wave periods by utilizing over-crossing zero point, and determining the total number of the single wave period; selecting a sampling point intervalparticipating into the computation of single wave direction, and computing a transient wave direction of each sampling point and single wave direction in the interval; accounting counting proportionsof a single wave direction measurement result in 16 angle intervals; and selecting a median value of the angle interval with the maximum counting proportion value as the main wave direction. Through the method of selecting multi-point wave direction data in single wave process to perform the fusion processing, the accuracy of measuring the wave direction through the buoy is effectively improved.

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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