抄録
In various marine constructions, searching for the pattern of seabeds is often done. This search is accomplished by analyzing the data provided by a sonar. However, surface waves of the sea cause the ship to heave and roll in the collection of the data. This means they disturb the sonar to collect exact data on the pattern of the seabeds. So, estimating the heaving and the rolling of the ship has a key in the exact recognition of the pattern of the seabeds. Exact estimation of these quantities also plays an important role in the program of building a rolling-less ship.
From these viewpoints, the present paper develops an automatic measurement system, which uses appropriately located two servo-type acceleration meters and estimates the heaving and the rolling of the ship by analyzing the outputs of the acceleration meters taking into account the wave properties which influence the ship's movement.
