Advanced Adaptive Optics Control Techniques

Abstract

Optimal estimation and control methods for high energy laser adaptive optics systems are described. Three system types are examined: Active Multidither (AMD), Phase Conjugate (PC), and Beam Cleanup (BC). Sources of phasefront distortion considered include: atmospheric turbulence, backscatter speckle, base vibration, and mirror thermal distortion. Kalman-type digital algorithms for phasefront aberration estimation are developed and evaluated through computer simulation; performance comparisons with classical estimation approaches are provided. Optimal feedback-feedforward controllers are designed for the active system components; performance comparisons with classical designs and sensivitiy studies related to disturbance model mismatches and active component bandwidth are presented. Results of integrated estimation and control simulations are evaluated. Areas for further refinement of the adaptive optics approaches and potential system implementations are recommended.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA066929

Entities

People

  • Deb K. Guha
  • Douglas P. Glasson

Organizations

  • TASC, Inc

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adaptive Optics
  • Algorithms
  • Atmospheric Motion
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Simulations
  • Control Systems
  • Control Systems Engineering
  • Distortion
  • High Energy
  • High Energy Lasers
  • Kalman Filters
  • Lasers
  • Mathematical Analysis
  • Mathematical Filters
  • Mathematical Models
  • Optics

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy