Accession Number : ADD008795

Title :   Depth Mapping System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Eppel,Joseph C

Report Date : 07 Jul 1981

Pagination or Media Count : 6

Abstract : A depth mapping system is carried from an aircraft flying above the water. A pulsed laser directs a pulse at a predetermined water area and a multi-apertured photomultiplier tube receives backscattered or reflected radiation signals from both the air-water interface and a submerged surface. A signal comparator simultaneously compares each of the reflected radiation signals against the air-water interface radiation signal and drives a CRT display which illustrates the depth of the reflecting surface over the predetermined area. (Author)

Descriptors :   *Patents, *Mapping, *Pulsed lasers, *Contours, *Ocean bottom topography, Depth finding, Cathode ray tube screens, Apertures, Airborne, Photomultiplier tubes, Air water interactions, Light scattering, Backscattering, Matrix displays

Subject Categories : Cartography and Aerial Photography
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE