Anisoplanatic atmospheric measurements for terrestrial imaging

Clare E. Dillon, Heather Dalgarno, Sijiong Zhang, Alan H. Greenaway

Research output: Contribution to journalArticle

Abstract

Phase diversity measurements using diffractive encoding systems offer a means for simultaneous measurement of the angular dependence of the turbulence induced in the wavefront distortion and either the angular dependence of scintillation induced during atmospheric propagation or the turbulence-degraded point spread function. We will describe experiments designed to measure the wavefront distortion and angular decorrelation of the atmospheric transfer functions, and discuss the observational strategy for measurement of atmospheric properties under a range of atmospheric conditions and propagation distances. By reconstructing the laser wavefront and comparing the calculated and measured images we will also aim to investigate the effect of strong scintillation on phase diversity wavefront reconstruction techniques. Laboratory tests of the equipment and preliminary measurements will be described, as well as some theory and modeling.

Original languageEnglish
Article number60180W
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume6018
DOIs
Publication statusPublished - 2005
Event5th International Workshop on Adaptive Optics for Industry and Medicine - Beijing, China
Duration: 29 Aug 20051 Sep 2005

Keywords

  • Anisoplanatism
  • Atmospheric propagation
  • Scintillation
  • Wavefront sensing

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