Development of 10, 000 m Class Deep Sea Video-Camera System

本研究的目的是开发一种新的高分辨率高度计，用于监测摄像系统与海底之间的距离。利用50 kHz回波测深仪进行深度监测，成功地实现了摄像机与海底距离的测量。准确率为距离的5%。然后将该高度计部署在由美国大学海洋研究所开发的新型深海摄像系统Desmos上。在白豪丸R/V上使用。在俾斯麦海马努斯盆地的成功试验表明，6000m级深水系统的初步构想是可行的。对万米级摄像系统的设计作了进一步的考虑。最严重的技术困难与电缆的设计有关。目前，我们评估该系统应由发射器和二次运载器组成。然而，这个系统可能过于庞大，在操作上是不可行的。

The purpose of this research was to develop a new high-resolution altimeter for monitoring of distance between the camera system and sea bottom. Also, a feasibility study was conducted for the development of super deep real-time video system for the research of deep-sea trenches.The altimeter which uses 50kHz echo sounder for depth monitoring was successful for detection of distance between camera and seafloor. The accuracy was 5% of the distance. Then this altimeter was deployed on a new deep sea video-camera system, DESMOS which were developed at Ocean Research Institute, Univ. Of Tokyo for the use on R/V Hakuho-maru. A successful trial at the Manus Basin in the Bismark sea indicates that an initial concept of 6000m class deep water system was proved to be feasible. A further consideration was given to design of 10,000 m class video-camera system. The most severe technological difficulty is related to design of the cable. At present, we assess the system should be composed of launcher and secondary vehicle. However, the system can well be too gigantic to be operationally feasible.