Accession Number : ADD003225

Title :   Seafloor Mapping System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hitchcock,Robert B

Report Date : 31 Aug 1976

Pagination or Media Count : 8

Abstract : The present invention provides a stereo-film of the coordinates of the seafloor being mapped from echo ranges produced by a pair of towed, pulsed, side-looking sonar transducers. A pair of circular arcs of light are imaged onto a photoconductive, liquid-crystal, layered array which irradiates a point of light at the intersection point of the two arcs of light. The radius of each circular arc of light is proportional to its respective echo range. The point of light is imaged onto a photographic film through a staircased fiber-optic system, a stereo lens pair and a fiber-optic light funnel to yield the stereo film.

Descriptors :   *Mapping, *Ocean bottom topography, *Patents, Stereomapping, Sonar transducers, Fiber optics

Subject Categories : Cartography and Aerial Photography
      Physical and Dynamic Oceanography
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE