Bartlett's method

Bartlett's method

In physics, engineering, and applied mathematics, Bartlett's method, named after M.S. Bartlett, is used for estimating power spectra. Bartlett's method provides a way to reduce the variance of the periodogram in exchange for a reduction of resolution, compared to standard periodograms. Common applications of Bartlett's method are frequency response measurements and general spectrum analysis.

Definition and Procedure

Bartlett’s method consists of the following steps:
# The original N point data segment is split up into K data segments of length M
# For each segment, compute the periodogram by computing the discrete Fourier transform, and then computing the squared magnitude of the result.
# Average the result of the squared periodograms above for the K data segments.
## The averaging reduces the variance, compared to the original N point data segment.

The end result is an array of power measurements vs. frequency "bin".

ee also

*M. S. Bartlett
*Welch method is a method that uses a modified version of Bartlett’s method.

References

* Proakis, J.G., and Manolakis, D.G., Digital Signal Processing, Upper Saddle River, NJ: Prentice-Hall, 1996, pp 910-911.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Bartlett-Fenster — Der Begriff Fensterfunktion stammt aus der digitalen Signalverarbeitung. Die Fensterfunktion legt fest, mit welcher Gewichtung die bei der Abtastung eines Signals gewonnenen Abtastwerte innerhalb eines Ausschnittes (Fenster) in nachfolgende… …   Deutsch Wikipedia

  • Bartlett, Sir Frederic C — ▪ British psychologist born Oct. 20, 1886, Stow on the Wold, Gloucestershire, Eng. died Sept. 30, 1969, Cambridge, Cambridgeshire       British psychologist best known for his studies of memory.       Through his long association with Cambridge… …   Universalium

  • Welch's method — In physics, engineering, and applied mathematics, Welch s method, named after P.D. Welch, is used for estimating the power of a signal vs. frequency, reducing noise compared to the methods it is based upon. Welch s method is based on the concept… …   Wikipedia

  • M. S. Bartlett — Born 18 June 1910(1910 06 18) Died 8 January 2002(2002 01 08) (aged 91) …   Wikipedia

  • Chris Bartlett (musician) — Christopher Everette Bartlett (born October 28, 1981) is an American guitarist, music teacher, author and singer songwriter. Originally from Macon, Georgia, he briefly attended Georgia College and State University where he refined his skills and… …   Wikipedia

  • Bruce Bartlett — (b. October 11, 1951 in Ann Arbor, Michigan) is a historian who turned to writing about supply side economics. He was a domestic policy adviser to President Ronald Reagan and was a treasury official under President George H.W.… …   Wikipedia

  • Schulze method — Part of the Politics series Electoral methods Single winner …   Wikipedia

  • W. H. R. Rivers — Photograph of Rivers taken by Henry Maull Born 12 March 1864(1864 03 12) …   Wikipedia

  • Window function — For the term used in SQL statements, see Window function (SQL) In signal processing, a window function (also known as an apodization function or tapering function[1]) is a mathematical function that is zero valued outside of some chosen interval …   Wikipedia

  • Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”