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New Variance-Reducing Methods for the PSD Analysis of Large Optical SurfacesEdge data of a measured surface map of a circular optic result in large variance or "spectral leakage" behavior in the corresponding Power Spectral Density (PSD) data. In this paper we present two new, alternative methods for reducing such variance in the PSD data by replacing the zeros outside the circular area of a surface map by non-zero values either obtained from a PSD fit (method 1) or taken from the inside of the circular area (method 2).
Document ID
20150008566
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Sidick, Erkin
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
June 13, 2010
Subject Category
Optics
Meeting Information
Meeting: Optical Fabrication and Testing (OF&T)
Location: Jackson Hole, WY
Country: United States
Start Date: June 13, 2010
End Date: June 17, 2010
Sponsors: Optical Society of America
Distribution Limits
Public
Copyright
Other
Keywords
Surface measurements-roughness
Surface measurements-figure
Phase

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