| 摘要 |
A navigation system and method for diving operation in view of facilitating navigation under water to a specific location, in particular navigation back to a dive starting point, i.e., to the place from which the diving was started. The system includes a base station fixed to the starting point, such as a boat or equivalent, and arranged to transmit a signal to its environment, and a mobile unit carried along by the diver. The mobile unit includes a compass and a locating part which receives the signal transmitted by the base station. The locating part converts the signal to information on the return direction, and combines the information on the return direction with the magnetic information on the direction obtained from the compass, so that the information on the return direction from the position of the diver when the signal is received is maintained irrespective of the momentary location and position of the diver and the mobile unit.
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