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Automated wind velocity profiling from adaptive optics telemetry

Laidlaw, Douglas J. and Osborn, James and Morris, Timothy J. and Basden, Alastair G. and Gendron, Eric and Rousset, Gerard and Townson, Matthew J. and Wilson, Richard W. (2019) Automated wind velocity profiling from adaptive optics telemetry. Monthly Notices of the Royal Astronomical Society, 491 (1), pp. 1287-1294. Oxford University Press. DOI: 10.1093/mnras/stz3062 ISSN 0035-8711

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Official URL: https://academic.oup.com/mnras/article/491/1/1287/5612197

Abstract

Ground-based adaptive optics (AO) systems can use temporal control techniques to greatly improve image resolution. A measure of wind velocity as a function of altitude is needed to minimize the temporal errors associated with these systems. Spatio-temporal analysis of AO telemetry can express the wind velocity profile using the slope detection and ranging (SLODAR) technique. However, the limited altitude-resolution of current AO systems makes it difficult to disentangle the movement of independent layers. It is therefore a challenge to create an algorithm that can recover the wind velocity profile through SLODAR data analysis. In this study, we introduce a novel technique for automated wind velocity profiling from AO telemetry. Simulated and on-sky centroid data from CANARY – an AO testbed on the 4.2 m William Herschel telescope, La Palma – is used to demonstrate the proficiency of the technique. Wind velocity profiles measured on-sky are compared to contemporaneous measurements from Stereo-SCIDAR, a dedicated high-resolution atmospheric profiler. They are also compared to European centre for medium-range weather forecasts. The software package that we developed to complete this study is open source.

Item URL in elib:https://elib.dlr.de/132101/
Document Type:Article
Title:Automated wind velocity profiling from adaptive optics telemetry
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laidlaw, Douglas J.Douglas.Laidlaw (at) dlr.dehttps://orcid.org/0000-0002-6894-6172
Osborn, JamesUNSPECIFIEDhttps://orcid.org/0000-0002-9079-1883
Morris, Timothy J.UNSPECIFIEDUNSPECIFIED
Basden, Alastair G.UNSPECIFIEDUNSPECIFIED
Gendron, EricUNSPECIFIEDUNSPECIFIED
Rousset, GerardUNSPECIFIEDUNSPECIFIED
Townson, Matthew J.UNSPECIFIEDhttps://orcid.org/0000-0002-8902-0379
Wilson, Richard W.UNSPECIFIEDUNSPECIFIED
Date:4 November 2019
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:491
DOI :10.1093/mnras/stz3062
Page Range:pp. 1287-1294
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:turbulence, atmospheric effects, instrumentation: adaptive optics, telescopes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben GNSS2/Neue Dienste und Produkte
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Laidlaw, Douglas
Deposited On:10 Dec 2019 17:04
Last Modified:11 Dec 2019 13:33

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