Diffraction-Limited Imaging of Space Objects III.

Abstract

This report investigate methods for obtaining diffraction limited images of space objects, despite the turbulent atmosphere, by reconstructing images from data provided by optical interferometers (particularly stellar speckle interferometry). Major accomplishments include the following: (1) A new closed form recursive algorithm was invente for reconstructing sampled objects having latent reference points. (2) Improvements in the iterative Fourier transform algorithm were devised, solving the stagnation problems of stripes and of simultaneous twin images. (3) Uniqueness of the reconstructed image was demonstrated empirically. (4) Reconstruction of complex valued objects was shown to to be possible. (5) The Hayes Quatieri recursive algorithm was shown to suffer from a uniqueness problem, and that algorithm was generalized. (6) An improved method for estimating the object's Fouriere modulus from stellar speckle interferometry data was devised.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1986
Accession Number
ADA174100

Entities

People

  • Christopher C. Wackerman
  • James Fienup

Organizations

  • Environmental Research Institute of Michigan

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Complex Variables
  • Computational Science
  • Detectors
  • Image Processing
  • Image Reconstruction
  • Interferometers
  • Interferometry
  • Measurement
  • Power Spectra
  • Random Variables
  • Scientific Research
  • Spearography
  • Synthetic Aperture Radar
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Optical Physics and Photonics.
  • Statistical inference.

Technology Areas

  • Space
  • Space - Space Objects