The inverse of winnowing: a FORTRAN subroutine and discussion of unwinnowing discrete data
Open-File Report
2003-229
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Abstract
This report describes an unwinnowing algorithm that utilizes a discrete Fourier transform, and a resulting Fortran subroutine that winnows or unwinnows a 1-dimensional stream of discrete data; the source code is included. The unwinnowing algorithm effectively increases (by integral factors) the number of available data points while maintaining the original frequency spectrum of a data stream. This has utility when an increased data density is required together with an availability of higher order derivatives that honor the original data.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | The inverse of winnowing: a FORTRAN subroutine and discussion of unwinnowing discrete data |
| Series title | Open-File Report |
| Series number | 2003-229 |
| DOI | 10.3133/ofr03229 |
| Edition | Version 1.0 |
| Year Published | 2004 |
| Language | ENGLISH |
| Description | 52 p. |
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