Selected Articles.

Abstract

A method that uses a one dimensional array detector to measure the two dimensional wavefront tilt of a beam, is proposed. A preliminary experiment is given to verify the principle. The main limit for a laser guide star adaptive optics system is the focal anisoplanatism. Firstly, based on the filter function of the atmospheric turbulence sensing geometry, the variance of the residual wavefront distortion resulting from focal anisoplanatism was derived, then the effective diameter do of the imaging system was derived. d0 was calculated according to the atmospheric turbulence model in Kunming and Xinglong. The calculation shows that the correction of the piston and tilt is important for the adaptive optics system.

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Document Details

Document Type
Technical Report
Publication Date
Jan 16, 1997
Accession Number
ADA321167

Entities

People

  • Chengyu Fan
  • Hairong Zhong
  • Qisheng Lu
  • Zhengfeng Song
  • Zhiping Jiang

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Adaptive Optics
  • Air Intelligence
  • Atmospheric Motion
  • Computational Fluid Dynamics
  • Detectors
  • Diffraction
  • Distortion
  • Focal Planes
  • Frequency
  • Images
  • Linear Arrays
  • Optics
  • Photography
  • Scattering
  • Two Dimensional
  • Visible Spectra
  • Waves

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.
  • Spectroscopy.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.

Technology Areas

  • Directed Energy