Detection of false transients

Lorenzo Galleani; Leon Cohen; Douglas J. Nelson

doi:10.1117/12.617662

16 September 2005 Detection of false transients

Lorenzo Galleani, Leon Cohen, Douglas J. Nelson

Proceedings Volume 5910, Advanced Signal Processing Algorithms, Architectures, and Implementations XV; 59100C (2005) https://doi.org/10.1117/12.617662
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

When one calculates a time-frequency distribution of white noise there sometimes appear transients of short duration. Superficially, these transients appear to be real signals but they are not. This comes about by random chance in the noise and also because particular types of distributions do not resolve components well in time. These fictitious signals can be misclassified by detectors and hence it is important to understand their origin and statistical properties. We present experimental studies regarding these false transients, and by simulation we statistically quantify their duration for various distributions. We compare the number and duration of the false transients when different distributions are used.

Citation Download Citation

Lorenzo Galleani, Leon Cohen, and Douglas J. Nelson "Detection of false transients", Proc. SPIE 5910, Advanced Signal Processing Algorithms, Architectures, and Implementations XV, 59100C (16 September 2005); https://doi.org/10.1117/12.617662

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