Fraser filter
id:
fraser-filter-267-14521806
title:
Fraser filter
text:
A Fraser filter, named after Douglas Fraser, is typically used in geophysics when displaying VLF data. It is effectively the first derivative of the data. If f = f i represents the collected data then a v e r a g e 12 = f 1 + f 2 2 is the average of two values. Consider this value to be plotted between point 1 and point 2 and do the same with points 3 and 4: a v e r a g e 34 = f 3 + f 4 2 If Δ x represents the space between each station along the line then a v e r a g e 12 − a v e r a g e 34 2 Δ
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wiki
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encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Fraser_filter
date created:
date modified:
2023-11-15T02:21:45Z
main entity:
{"identifier":"Q5493599","url":"https://www.wikidata.org/entity/Q5493599"}
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fields total:
13
integrity:
13