Geometric Theory of Moving Grid Wavefront Sensor

Abstract

A geometric optics analysis is made for a wavefront sensor that uses a moving Ronchi grid. It is shown that by simple data processing a signal proportional to the gradient of the distorted wavefront can be obtained for each element of an array of photodetectors that cover the entire image of a telescope aperture. The effect of diffraction is calculated for this system. This shows the limitations and provides a justification for the geometric analysis.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1977
Accession Number
ADA042432

Entities

People

  • Eugene B. Turner

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Air Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Adaptive Optics
  • Air Force
  • Amplitude
  • Atmospheric Motion
  • Data Processing
  • Department Of Defense
  • Detectors
  • Diffraction
  • Electromagnetic Wave Detectors
  • Focal Planes
  • Grids
  • Image Restoration
  • Integrals
  • Photodetectors
  • Telescopes
  • Wavefronts

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Optical Physics and Photonics.

Technology Areas

  • Space
  • Space - Space Objects