Error sources in SLODAR turbulence profile fitting

Butterley, T.; Osborn, J.; Wilson, R.

Abstract

This paper discusses some of the main error sources that affect use of the Slope Detection and Ranging (SLODAR) technique to recover atmospheric turbulence profiles from Shack-Hartmann wavefront sensor data. The most significant factor we address here is that of temporal sampling - we examine the effect of poorly-averaged slope correlations due to low wind speeds (or data sets that are insufficiently long) on spatial covariances of wavefront slopes. We discuss how this can affect the observed outer scale of the turbulence. A dual SCIDAR- SLODAR instrument is described that is ideally suited to exploring the impact of these effects and, potentially, correcting them. Some preliminary results from the instrument are presented.

Citation

Butterley, T., Osborn, J., & Wilson, R. (2015). Error sources in SLODAR turbulence profile fitting. Journal of Physics: Conference Series, 595(1), Article 012006. https://doi.org/10.1088/1742-6596/595/1/012006

• Journal Article Type: Article
• Online Publication Date: Apr 8, 2015
• Publication Date: Apr 8, 2015
• Deposit Date: Jan 9, 2017
• Publicly Available Date: May 30, 2018
• Journal: Journal of Physics: Conference Series
• Print ISSN: 1742-6588
• Electronic ISSN: 1742-6596
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 595
• Issue: 1
• Article Number: 012006
• DOI: https://doi.org/10.1088/1742-6596/595/1/012006
• Public URL: https://durham-repository.worktribe.com/output/1396796