Comparison of a Shack-Hartmann and distorted grating wavefront sensor using WaveTrain simulation software

Erry, Gavin R. G.; Harrison, Paul; Otten, Leonard John; Weaver, Lawrence D.

doi:10.1117/12.584584

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2008

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“…There are indications that all of the wavescopes may not be able to cope with strongly asymmetric wavefronts. (Some research [6,7] suggests that the DDG wavescope is able to recover higher frequency data with a larger signal-to-noise in situation where the wavefront suffers from large perturbations, albeit still in the linear domain).…”

Section: The Wavefront Sensormentioning

confidence: 99%

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Towards generic military imaging adaptive optics

Rana

2008

SPIE Proceedings

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It is well known that the quality of imagery captured by electro-optic cameras is degraded by atmospheric turbulence. This is especially true for horizontal path surveillance in challenging military environments (i.e. within 3m of the ground) where atmospheric turbulence is known to severely affect image quality. The acquisition ranges for even long range cameras can reduce from a few kilometres to less than 100 metres. In order to arrive at a solution that may be deployed in operationally significant scenarios, video imagery captured in these conditions was analysed. It became apparent that conventional civilian adaptive optics is not robust enough for generic military imaging. Therefore a pragmatic approach has been developed to lead to the design of a lens system that incorporates adaptive optics that may be used in challenging military scenarios.

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Section: The Wavefront Sensormentioning

confidence: 99%

“…Our research has been directed at the wavescope, especially as there seems to be considerable ambiguity about the performance of the various types of wavescope [5][6][7]. We have developed an optical design for an adaptive lens system.…”

Section: Design Considerationsmentioning

confidence: 99%

Towards generic military imaging adaptive optics

Rana

2008

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

Comparison of a Shack-Hartmann and distorted grating wavefront sensor using WaveTrain simulation software

Cited by 1 publication

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Towards generic military imaging adaptive optics

Towards generic military imaging adaptive optics

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