A4 Conference proceedings

Limits of turbulence and outer scale profiling with non-Kolmogorov statistics


Publication Details

Authors: Lehtonen Jonatan, Correia Carlos M., Helin Tapio

Publisher: Society of Photo-optical Instrumentation Engineers (SPIE)

Publication year: 2018

Language: English

Related journal or series: Proceedings of SPIE

Title of parent publication: Proceedings of SPIE : the International Society for Optical Engineering

Journal name in source: Proceedings of SPIE - The International Society for Optical Engineering

Volume number: 10703

ISBN: 9781510619593

ISSN: 0277-786X

eISSN: 1996-756X

JUFO level of this publication: 0

Digital Object Identifier (DOI): http://dx.doi.org/10.1117/12.2313960

Permanent website address: https://api.elsevier.com/content/abstract/scopus_id/85053536022

Open Access: Not an Open Access publication

Location of the parallel saved publication: https://helda.helsinki.fi/bitstream/handle/10138/310283/spie_proc.pdf?sequence=1


Abstract

SLODAR (SLOpe Detection And Ranging) methods recover the atmospheric turbulence profile from crosscorrelations of wavefront sensor (WFS) measurements, based on known turbulence models. Our work grows
out of several experiments showing that turbulence statistics can deviate significantly from the classical Kolmogorov/von K´arm´an models, especially close to the ground. We present a novel SLODAR-type method which
simultaneously recovers both the turbulence profile in the atmosphere and the turbulence statistics at the ground
layer – namely the slope of the spatial frequency power law. We consider its application to outer scale (L0)-
reconstruction and investigate the limits of the joint estimation of such parameters.


Keywordsadaptive optics, non-Kolmogorov turbulence, outer scale, SLODAR, Tomography, turbulence


Last updated on 2021-10-02 at 10:25