複色記録式ソーナーに就いて(日本航海学会第14回講演会)

概要

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Comared to the splendid developement of Radar and Loran as the navigation instrument in recent time, Sonar has become out of public interest. But may we let it be alone? In spite of the progression of Science in future time, only the sound wave can get to the longest distance with smallest attenuation so far as in water. Therefore it must be our duty, that the Sonar is brought up to answer the urgent requirement of navigators about the centour-navigation along the depth, to find the position by the measure of depth and to prevent from stranding. I have many ideas to improve the Sonar, especially concerning to recording devices. In this subject, I will report about the most important them "Multi-colour Recording systems of Sonar" of our reseach-work. In multi-dimensional Sonar, in two or more dimensions each different and mutualy discriminable colour is adopted and these dimensions are recorded simultaneously in one recording paper, in which each colour is recorded by different tip-material of pen, the material of which is diffused on the wet paper as positive metalic ions of different colour, according to sound-pulse current, which penetrate the paper. In such system, we may find easily geometrically the relations between different dimensions (two or more different range of depth, port side or starboard side, and different directions) by colours of record overlapped in same paper.
社団法人日本航海学会の論文
1956-05-10