The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions: Part I

Len Gelman, Ivan Petrunin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The classical higher order spectra (HOS) have been widely investigated [1-7] for stationary processes. However, for some important practical applications in radar, sonar and mechanical systems (e.g. change of the instantaneous frequency of radar and sonar signals, change of the shaft frequency during machinery operation etc.), it is necessary to process non-stationary signals with frequency non-stationarities. The classical techniques are not suitable for those signals because the HOS average a non-stationary frequency and thus create estimation errors due to frequency nonstationarity.
Original languageEnglish
Title of host publication10th International Conference of the Slovenian Society for Non-Destructive Testing 2009
Subtitle of host publicationApplication of Contemporary Non-Destructive Testing in Engineering
EditorsJanez Grum
PublisherThe Slovenian Society for Non-Destructive Testing
Pages17-25
Number of pages9
Volume1
ISBN (Print)9781634395830
Publication statusPublished - 1 Oct 2009
Externally publishedYes
Event10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering - Ljubljana, Slovenia
Duration: 1 Sep 20093 Sep 2009
Conference number: 10

Publication series

Name E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics
PublisherNDT Internet Publishing
Number10
Volume14
ISSN (Electronic)1435-4934

Conference

Conference10th International Conference of the Slovenian Society for Non-Destructive Testing 2009
CountrySlovenia
CityLjubljana
Period1/09/093/09/09

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