Accession Number : ADD018066

Title :   Underwater Sensing Device for Ocean Floor Contact

Descriptive Note : Patent Application, Filed 10 May 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lazauski, Colin J

PDF Url : ADD018066

Report Date : 10 May 1996

Pagination or Media Count : 16

Abstract : An underwater sensing device for measuring or sensing an underwater condition proximate the floor of an ocean, lake or similar body of water. The sensing device includes an underwater sensing device mounting member and an underwater sensing device sensor, such as a hydrophone, mounted on the mounting member. The mounting member has known acoustic properties including a thickness and a largest dimension, each of which is a function of an acoustic wavelength in the underwater environment. The sensing device can also include acoustic diffraction reducing members disposed around the edges of the mounting member. The sensing device can also include first and second underwater sensors disposed on either side of the mounting member so that one of the sensors faces away from the underwater floor. An underwater sensing device switch, such as a gravity switch, activates the sensor that faces away from the underwater floor.

Descriptors :   *PATENT APPLICATIONS, *ACOUSTIC PROPERTIES, *UNDERWATER EQUIPMENT, MEASUREMENT, THICKNESS, ENVIRONMENTS, DETECTION, DETECTORS, ACOUSTIC WAVES, GRAVITY, HYDROPHONES, OCEAN BOTTOM, UNDERWATER, SWITCHES

Subject Categories : Marine Engineering
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE