Focal anisoplanatism influence on dynamically ranged Rayleigh beacon measurements

Steven M. Zuraski; Jack E. McCrae; Steven T. Fiorino

doi:10.1117/12.2568831

20 August 2020 Focal anisoplanatism influence on dynamically ranged Rayleigh beacon measurements

Steven M. Zuraski, Jack E. McCrae, Steven T. Fiorino

Proceedings Volume 11508, Unconventional Imaging and Adaptive Optics 2020; 1150802 (2020) https://doi.org/10.1117/12.2568831
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

Rayleigh beacons used to sense the strength of the turbulence along an optical path are subject to undesirable effects on a measurement due to focal anisoplanatism. It is commonly referred to as the cone effect and manifests from unsampled turbulence at the edges of the pupil. The evaluation of focal anisoplanatism is fairly well understood for traditional Rayleigh beacon systems. However, for a dynamically ranged Rayleigh beacon system that utilizes beacon measurements from many varied finite ranges to build a tomographic profile of the turbulence strength, the understanding of focal anisoplanatism becomes all the more important and has not been thoroughly investigated. Focal anisoplanatism effects on a dynamically ranged Rayleigh beacon measurement system are presented to quantify the resultant influence on the accuracy of the beacon system’s ability to produce tomographic turbulence strength profile estimations.

Conference Presentation

Citation Download Citation

Steven M. Zuraski, Jack E. McCrae, and Steven T. Fiorino "Focal anisoplanatism influence on dynamically ranged Rayleigh beacon measurements", Proc. SPIE 11508, Unconventional Imaging and Adaptive Optics 2020, 1150802 (20 August 2020); https://doi.org/10.1117/12.2568831

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