Improving Large-Telescope Speckle Imaging via Aperture Partitioning

Abstract

We describe a generalization of aperture masking interferometry that improves the speckle imaging performance of a telescope in the large D=r0 regime while making use of all collected photons. Our approach is to partition the aperture into annuli, form the bispectra of the focal plane images formed from each annulus, recombine them into a synthesized bispectrum, and use that to retrieve the object. This may be implemented using multiple cameras and special mirrors, or with a single camera and a suitable pupil phase mask.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2008
Accession Number
ADA532022

Entities

People

  • Brandoch Calef
  • Eric Therkildsen

Organizations

  • Boeing

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Atmospheric Motion
  • Focal Plane Arrays
  • Focal Planes
  • Frequency
  • Interferometry
  • Numbers
  • Redundancy
  • Simulations
  • Space Surveillance
  • Spearography
  • Standards
  • Telescopes
  • Transfer Functions
  • Turbulence
  • Wavefronts

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Image Processing and Computer Vision.

Technology Areas

  • Space
  • Space - Space Objects