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

Len Gelman; Ivan Petrunin

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

Len Gelman, Ivan Petrunin

Cranfield University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 language	English
Title of host publication	10th International Conference of the Slovenian Society for Non-Destructive Testing 2009
Subtitle of host publication	Application of Contemporary Non-Destructive Testing in Engineering
Editors	Janez Grum
Publisher	The Slovenian Society for Non-Destructive Testing
Pages	17-25
Number of pages	9
Volume	1
ISBN (Print)	9781634395830
Publication status	Published - 1 Oct 2009
Externally published	Yes
Event	10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering - Ljubljana, Slovenia Duration: 1 Sept 2009 → 3 Sept 2009 Conference number: 10

Publication series

Name	E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics
Publisher	NDT Internet Publishing
Number	10
Volume	14
ISSN (Electronic)	1435-4934

Conference

Conference	10th International Conference of the Slovenian Society for Non-Destructive Testing 2009
Country/Territory	Slovenia
City	Ljubljana
Period	1/09/09 → 3/09/09

Access to Document

https://www.ndt.net/search/docs.php3?id=8063Licence: Unspecified

Cite this

Gelman, L., & Petrunin, I. (2009). The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions: Part I. In J. Grum (Ed.), 10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering (Vol. 1, pp. 17-25). ( E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics; Vol. 14, No. 10). The Slovenian Society for Non-Destructive Testing. https://www.ndt.net/search/docs.php3?id=8063

Gelman, Len ; Petrunin, Ivan. / The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions : Part I. 10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering . editor / Janez Grum. Vol. 1 The Slovenian Society for Non-Destructive Testing, 2009. pp. 17-25 ( E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics; 10).

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

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. ",

keywords = "Non-Destructive Testing, condition monitoring",

author = "Len Gelman and Ivan Petrunin",

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booktitle = "10th International Conference of the Slovenian Society for Non-Destructive Testing 2009",

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Gelman, L & Petrunin, I 2009, The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions: Part I. in J Grum (ed.), 10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering . vol. 1, E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics, no. 10, vol. 14, The Slovenian Society for Non-Destructive Testing, pp. 17-25, 10th International Conference of the Slovenian Society for Non-Destructive Testing 2009, Ljubljana, Slovenia, 1/09/09. <https://www.ndt.net/search/docs.php3?id=8063>

The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions: Part I. / Gelman, Len; Petrunin, Ivan.
10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering . ed. / Janez Grum. Vol. 1 The Slovenian Society for Non-Destructive Testing, 2009. p. 17-25 ( E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics; Vol. 14, No. 10).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - 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.

AB - 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.

KW - Non-Destructive Testing

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Gelman L, Petrunin I. The Higher Order Spectra for Condition Monitoring/NDT in Non-Stationary Conditions: Part I. In Grum J, editor, 10th International Conference of the Slovenian Society for Non-Destructive Testing 2009: Application of Contemporary Non-Destructive Testing in Engineering . Vol. 1. The Slovenian Society for Non-Destructive Testing. 2009. p. 17-25. ( E-Journal of Nondestructive Testing & Ultrasonics: The E-Journal of Nondestructive Testing & Ultrasonics; 10).

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

Abstract

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