Earthquake magnitude estimation using Recursive Least Squares

Abstract

Heterodyne laser interferometer, which is used as a sensor for high-precision displacement measurement, is used to measure the ground motion and seismic waves as a seismometer. Through the displacement variation obtained by the precision measurement, we predict the magnitude of the earthquake. The Recursive Least Square (RLS) method reduces the error of earthquake magnitude prediction. RLS method is to update the relation between the magnitude and P d adaptively to predict the magnitude of earthquake more accurately. With the simulation results, we reduced error factors and improved the accuracy of earthquake magnitude estimation.