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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
86-6 Signal Processing
where x
n
and y
n
are zero-mean, discrete-time signals dened in the interval n = 0, 1, 2, …, N − 1. For each
value of p, the cross correlation is computed by shiing y
n
by pt and calculating the average product in
Equation 86.10. If x
n
and y
n
are unrelated, the sum of positive and negative products will tend to zero.
Conversely, y
n
tends to follow x
n
, but with a time delay D, r
xy
(p) will show a peak at p = D/t. is prop-
erty
of the CCF is illustrated in Figure 86.3. As noted by Bergland [8], cross correlation can be viewed as
“one signal searching to nd itself in another signal.”
For
y
n
= x
n
, r
xx
(p) becomes the autocor ...
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Publisher Resources

ISBN: 9781439848913