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Abstract
The mean fringe phase measured by Doppler asymmetric spatial heterodyne spectroscopy is a direct measure of atmospheric wind. The uncertainty in measuring the mean phase is investigated and found to be accurately predicted by an analytic formula for moderate and high signal-to-noise ratios. At lower signal-to-noise ratios, numeric issues in the phase calculation result in non-Gaussian distributions of mean phase. Analysis techniques are described to mitigate these numeric issues to the extent possible.
© 2019 Optical Society of America
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6 June 2019: A typographical correction was made to Ref. 9.
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