Motion compensation of K-band radar ocean wave measurement

Along with practicing the ocean wave measurement using K-band short-range radar, the impact of radar motion caused by a floating platform cannot be ignored. Radar motion needs to be compensated because the measurement method is based on sensing water particle motion which is apt to be influenced by radar motion. In this paper, motion compensation methods are proposed. Spectral difference method and mechanical method are designed to compensate linear motion and rotation motion respectively. The spectral difference method is evaluated using numerical simulation and then both of the two methods are validated in a wave tank. Wave period and height can be precisely measured in the numerical simulation and the wave tank experiment. The results prove that the radar motion impacts are successfully mitigated by the proposed motion compensation methods.