Optical correlator for improving images distorted by atmospheric turbulence

Alastair D. McAulay

doi:10.1117/12.391951

13 July 2000 Optical correlator for improving images distorted by atmospheric turbulence

Alastair D. McAulay

Proceedings Volume 4046, Advances in Optical Information Processing IX; (2000) https://doi.org/10.1117/12.391951
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

Heat induced turbulence in the air causes optical phase changes that degrade image quality by smearing and causing the image to waiver unevenly in the field of view. A wavefront estimator provides an estimate of the turbulence generated phase variations at the lens. A modified optical transfer function is computed to include the phase effects of turbulence by assuming that the turbulence can be approximated by a phase screen at the lens. A 4-f correlator is used to deconvolve the phase due to turbulence out of the image. A computer simulation generates phase screens for testing the system.

Citation Download Citation

Alastair D. McAulay "Optical correlator for improving images distorted by atmospheric turbulence", Proc. SPIE 4046, Advances in Optical Information Processing IX, (13 July 2000); https://doi.org/10.1117/12.391951

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available