LENSLET, BEAMWALK AND TILT DIVERSITY FOR ANISOPLANATIC IMAGING BY LARGE-APERTURE TELESCOPES

Systems and methods which combine standard image reconstruction and beam-control techniques with tomographic estimation of three-dimensional atmospheric turbulence to enable high-quality anisoplanatic imaging of distant objects at long range through the atmosphere over an extended field-of-view usin...

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Bibliographische Detailangaben
Hauptverfasser:	HOLMES, Richard B, IDELL, Paul S, GERWE, David R, CALEF, Brandoch
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CALCULATING COLORIMETRY COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIATION PYROMETRY TESTING
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Beschreibung
Zusammenfassung:	Systems and methods which combine standard image reconstruction and beam-control techniques with tomographic estimation of three-dimensional atmospheric turbulence to enable high-quality anisoplanatic imaging of distant objects at long range through the atmosphere over an extended field-of-view using a large aperture. More specifically, the systems and methods combine the concepts of atmospheric tomography, forward-model image reconstruction and tip, tilt, beam-walk, and focus control techniques to produce image reconstructions of high quality for large objects that move rapidly as viewed by large apertures in weak or strong extended atmospheric turbulence. The systems and methods use wavefront sensors and diversity concepts for modelling the atmospheric turbulences and to deconvolut the recorded images. Dievverity is introduced by in/out of focus images and translation of a lenslet array (22) of the wavefront sensor (24).