抄録
The Manned Submersible Vehicle is presently performing very important mission in the observation of the sea bed. However, it cannot accommodate the many specialists who would like to conduct their own observations. If such specialists could be supplied with picture of the sea bed in real time, the submersible would be more effective aid for geologists, biologists and other researchers. But it is not real time information for scientists on support ship.
We are carring out system development of long-distance picture transmission by acoustic signal.
After many experiments at the acoustic tank, we have successfully carried out ocean experiment of acoustic transmission of colour pictures from the depth of 3,500 m to the surface.
In this paper, the development process and the results of many experiments of this system are descrilad.
