Share Email Print
cover

Optical Engineering

Efficacy of predictive wavefront control for compensating aero-optical aberrations
Author(s): David J. Goorskey; Jason D. Schmidt; Matthew R. Whiteley
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Imaging and laser beam propagation from airborne platforms are degraded by dynamic aberrations due to air flow around the aircraft, aero-mechanical distortions and jitter, and free atmospheric turbulence. For certain applications, like dim-object imaging, free-space optical communications, and laser weapons, adaptive optics (AO) is necessary to compensate for the aberrations in real time. Aero-optical flow is a particularly interesting source of aberrations whose flowing structures can be exploited by adaptive and predictive AO controllers, thereby realizing significant performance gains. We analyze dynamic aero-optical wavefronts to determine the pointing angles at which predictive wavefront control is more effective than conventional, fixed-gain, linear-filter control. It was found that properties of the spatial decompositions and temporal statistics of the wavefronts are directly traceable to specific features in the air flow. Furthermore, the aero-optical wavefront aberrations at the side- and aft-looking angles were the most severe, but they also benefited the most from predictive AO.

Paper Details

Date Published: 15 March 2013
PDF: 13 pages
Opt. Eng. 52(7) 071418 doi: 10.1117/1.OE.52.7.071418
Published in: Optical Engineering Volume 52, Issue 7
Show Author Affiliations
David J. Goorskey, MZA Associates Corp. (United States)
Jason D. Schmidt, MZA Associates Corp. (United States)
Matthew R. Whiteley, MZA Associates Corp. (United States)


© SPIE. Terms of Use
Back to Top