| 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. |
| Genre: | USGS Numbered Series |
| ProdID: | 58294 |
| Citation Author: | Bracken, Robert E. |
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| Citation Edition: | Version 1.0 |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 52 p. |
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| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2003-229 |
| Citation Search Results Text: | The inverse of winnowing: a FORTRAN subroutine and discussion of unwinnowing discrete data; 2004; OFR; 2003-229; Bracken, Robert E. |
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| Citation Year: | 2004 |
| Type: | citation/reference |
| Text: | The inverse of winnowing: a FORTRAN subroutine and discussion of unwinnowing discrete data; 2004; OFR; 2003-229; Bracken, Robert E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2003/229/ |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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