DocumentCode
1452279
Title
On the false alarm probability for an overlapped FFT processor
Author
Maranda, Brian H.
Author_Institution
Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
Volume
32
Issue
4
fYear
1996
fDate
10/1/1996 12:00:00 AM
Firstpage
1452
Lastpage
1456
Abstract
A standard processor for detecting narrowband signals in noise applies the fast Fourier transform (FFT) to overlapped data blocks, and then sums the squared magnitudes of the bins from successive FFTs. The overlap of the data blocks causes these bins to be correlated, even when the noise is white. A simple expression is derived for the probability of false alarm when the covariance matrix of the FFT bins is tridiagonal
Keywords
covariance matrices; fast Fourier transforms; probability; signal detection; white noise; false alarm probability; narrowband signals; overlapped FFT processor; overlapped data blocks; squared magnitudes; tridiagonal covariance matrix; white noise; Covariance matrix; Detectors; Fast Fourier transforms; Flexible printed circuits; Frequency; Narrowband; Signal detection; Signal processing; Statistics; White noise;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/7.543866
Filename
543866
Link To Document