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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 217 records · Page 12

Decay of weak turbulence

Decay time of low Reynolds number weak turbulence generated by single and multistage grids, considering three dimensional energy spectrum

Huang, T. T.↗

Weakly stationary noise filtering of satellite-acquired imagery

A type of weakly stationary noise called herringbone noise was observed in satellite imagery. The characteristics of this noise are described; a model for its simulation was developed. The model is used to degrade pictorial data for comparison with similar noise degraded Nimbus data. Two filtering methods are defined and evaluated. A user's application demonstration is discussed.

Palgen, J. J. O.↗