15 March 2013 Efficacy of predictive wavefront control for compensating aero-optical aberrations
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Optical Engineering, 52(7), 071418 (2013). doi:10.1117/1.OE.52.7.071418
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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
David J. Goorskey, Jason D. Schmidt, Matthew R. Whiteley, "Efficacy of predictive wavefront control for compensating aero-optical aberrations," Optical Engineering 52(7), 071418 (15 March 2013). https://doi.org/10.1117/1.OE.52.7.071418

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