Direct, object brightness estimation from atmospheric turbulence degraded images using a new high-speed, modified phase diversity method

2008 ◽  
Author(s):  
William W. Arrasmith
Keyword(s):  
Atmospheric Turbulence ◽  
High Speed ◽  
Direct Object ◽  
Phase Diversity ◽  
Degraded Images

Pilot and Observer Performance in Simulated Low Altitude High Speed Flight

1965 ◽  
Vol 7 (3) ◽  
pp. 257-265 ◽  
Author(s):  
Ben Schohan ◽  
Harve E. Rawson ◽  
Stanley M. Soliday
Keyword(s):  
Atmospheric Turbulence ◽  
High Speed ◽  
Target Identification ◽  
Observer Performance ◽  
Acceleration Time ◽  
Acceleration Time Histories ◽  
Time Histories ◽  
Low Altitude ◽  
Vertical Accelerations

Responses of experienced pilots and aerial observers were studied in simulated low-altitude, high-speed (LAHS) flight. The pilots “flew” three-hour surveillance missions at airspeeds of .4M and .9M in different degrees of simulated atmospheric turbulence. Flying ability decreased from .4 to .9M; however, intensity of vertical accelerations did not seem to affect flying ability except at the most severe levels. Target identification was unimpaired by either turbulence or airspeed. The observers also flew three-hour missions while experiencing acceleration time histories recorded from the pilot's flights. Target identification deteriorated as airspeed increased from 0.4 to 0.9 Mach. Gust intensity did not affect performance of any of their tasks. Performance efficiency on all tasks did not deteriorate from beginning to end of the missions of both pilots and observers.

High-speed closed-loop dual deformable-mirror phase-diversity testbed

2007 ◽  
Author(s):  
James A. Georges III ◽  
Pam Dorrance ◽  
Kurt Gleichman ◽  
Julie Jonik ◽  
Dean Liskow ◽  
...  
Keyword(s):  
High Speed ◽  
Closed Loop ◽  
Deformable Mirror ◽  
Phase Diversity

Restoring atmospheric-turbulence-degraded images

2016 ◽  
Vol 55 (19) ◽  
pp. 5082 ◽  
Author(s):  
Md. Hasan Furhad ◽  
Murat Tahtali ◽  
Andrew Lambert
Keyword(s):  
Atmospheric Turbulence ◽  
Degraded Images

Phase diversity imaging through atmospheric turbulence

1994 ◽  
Vol 1 (2) ◽  
pp. 308-310 ◽  
Author(s):  
Naoshi Baba ◽  
Hiroyuki Tomita ◽  
Noriaki Miura
Keyword(s):  
Atmospheric Turbulence ◽  
Phase Diversity
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