Beam Control and a New Laboratory Testbed for Adaptive Optics in a Maritime Environment

Abstract

The Naval Postgraduate School is developing a laboratory environment for testing advanced beam control methods for compensation of atmospheric turbulence in adaptive optics for use in a maritime environment. This paper presents a multichannel transverse adaptive filter for beam control. Adaptive filters are useful for such control due to the constantly changing nature of atmospheric turbulence. A multichannel filter is required due to the multiple deformable mirror input commands and wavefront sensor output measurements in the system. The filter is augmented with an integrated bias estimator. Additionally this paper describes a method for generating horizontal-like atmospheric turbulence by using two liquid crystal spatial light modulators. The development and components of the new laboratory testbed are described, and preliminary simulation results are presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2010
Accession Number
ADA571339

Entities

People

  • Brij N. Agrawal
  • Masaki Magashima
  • Melissa S. Corley

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Adaptive Filters
  • Adaptive Optics
  • Adaptive Systems
  • Algorithms
  • Atmospheric Motion
  • Closed Loop Systems
  • Computers
  • Control Systems
  • Deformable Mirrors
  • Detectors
  • Environment
  • Filters
  • Frequency
  • Optical Modulators
  • Optics
  • Simulations
  • Turbulence

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Atmospheric Remote Sensing.
  • Image Processing and Computer Vision.