Optics Near the Snell Angle in a Water-to-Air Change of Medium

Abstract

Underwater imaging of the air environment is described with particular attention given to the optical problems of near-horizon viewing. These include severe chromatic aberration from transmission through the seawater wedge, the horizon distortion effect, and anisoplanatism resulting from the change of refractive aberrations in different areas of view. Various optical designs or schemes are presented that correct or relieve the first two optical problems. Strategies to minimize or attempt to view through the varying refraction of the surface are also suggested, and one is investigated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2007
Accession Number
ADA518875

Entities

People

  • H. Suiter
  • Kelvin Tong
  • Meir Gershenson
  • N. Flacco
  • Paul Carter
  • Ryan Ries

Organizations

  • Naval Surface Warfare Center

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Achromatic
  • Algorithms
  • Cameras
  • Capillary Waves
  • Color Temperature
  • Data Sets
  • Dispersions
  • Distortion
  • Dynamic Range
  • Focal Planes
  • Graphical User Interface
  • High Dynamic Range
  • Optics
  • Refraction
  • Refractive Index
  • Shape
  • Test Beds

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Radar Systems Engineering.
  • Regression Analysis.