The instantaneous linear motion information measurement method based on inertial sensors for ships

A novel method of estimating ship heave motion based on dual inertial measurement units

“…S. kuchle [4] , a foreign scholar, proposed to establish a motion model by estimating the heave frequency of the ship, and use Kalman filter algorithm to estimate the heave motion of the ship by acceleration. Gao Yuan [5] designed a Butterworth high pass filter to filter the IMU signal, and proposed a Fourier linear fitting algorithm to solve the problem of phase advance of the high pass filter. Jiang guoeucalyptus [6] proposed IIR high pass filter for inertial navigation information filtering, and used adaptive frequency estimation and adaptive delay correction algorithm to correct the phase advance of high pass filter.…”