Spectrum Analysis and Correlation

Authored by: Ronney B. Panerai

Measurement, Instrumentation, and Sensors Handbook

Print publication date:  February  2014
Online publication date:  February  2014

Print ISBN: 9781439848913
eBook ISBN: 9781439848937
Adobe ISBN:

10.1201/b15664-96

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Abstract

Most sensors and instruments described in the previous chapters of this handbook can produce continuous measurements in time or sequential measurements at fixed or variable time intervals, as represented in Figure 86.1. The temporal patterns resulting from such measurements are usually referred to as signals. Signals can either be continuous or discrete in time. The main objective of spectral analysis is to provide an estimate of the distribution of signal power at different frequencies. Spectral analysis and correlation techniques are an aid to the interpretation of signals and to the systems that generate them. These methods are now widely used for the analysis and interpretation of measurements performed in medicine, geophysics, vibration analysis, communications, and several other areas.

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