| 摘要 |
PURPOSE:To guide a ship to a target position effectively even when disturbance such as a tidal current and wind force is large by finding the angle difference from the direction of the target position from the route direction and position of a ship, and holding the angle difference and making a fine adjustment of the ship route. CONSTITUTION:A receiver 1 receives radio wave signals transmitted periodically from a main station and two slave stations and sends out a time-difference signal S1 indicating the difference in reception time. This signal S1 is supplied to an angle difference calculating circuit A and the signal S1 and an angle difference signal SA between the direction of the target position and the route direction of the ship are supplied to a steering device C. An angle calculating circuit B calculates and supplies an angle difference signal SB between the direction of the ship position and the route direction of the ship to the device C. The device C performs steering operation intermittently by the signal SA and continuous steering operation in intermittence by the signal SB. |
