Directional variable depth measuring apparatus

Abstract

Abstract PURPOSE:To precisely measure a depth regardless of the depth of water such as the sea bottom, by altering the directionality of a sonic wave at arbitrary time corresponding to a measured depth, after transmitting the directionality of said sound wave, to obtain almost cylindrical beam. CONSTITUTION:After the directionality of a sonic wave is transmitted, said directionality is altered so that beam shown by the drawing 2 is obtained within an underwater distance of 1m and the beam characteristic of the sonic wave is shown by the drawing 2' over an underwater distance of 1-2m and the directionality of beam comes to the drawing 2'' over an underwater distance of 1- 3m. When measurement is conducted by this method, a depth over an almost definite range can be precisely measured regardless of the depth of water.

Inventors

• 👤 Mutsuro Okino
• 👤 沖野　睦郎

Bibliographic Details