Design and comparative study of gravity wave gauge based on MEMS attitude sensor
XIAO Chao
CHEN Yonghua
HU Hegang
LIU Qingkui
Abstract：In order to realize all-day and all-weather wave observation at low cost,this paper proposes a design scheme of a gravitational wave gauge based on MEMS attitude sensor.The wave gauge collects original signal through attitude sensors including a three-axis accelerometer,a three-axis gyroscope,and a three-axis geomagnetometer,and converts the coordinate system through the quaternion method to obtain the vertical acceleration signal,and uses the Fourier transform to convert the time-domain ac-celeration signal into a frequency-domain signal for quadratic integration to obtain the wave height data,and completes the analysis of the wave eigenvalues by the upper-span zero point method.A wave simu-lation device was used to conduct a simulated wave measurement experiment,and compare the full wave height data measured by the self-developed wave gauge with the standard sine function,and to an-alyze the indication error of the wave eigenvalues.The results showed that the indication error met the first-level accuracy.Finally,a comparison experiment of marine wave measurement was carried out with the SBY1-1 wave gauge in the offshore area of Rongcheng city,and the wave measurement results were strongly correlated.Experiments showed that the wave gauge could stably and accurately com-plete the task of ocean wave measurement.
Keywords：wave gaugewave measurement methodfrequency domain integrationcoordinate system transformation
Publication Date：2025-08-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 53-60 )