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2017 | OriginalPaper | Chapter

7. Ambient Data Modeling and Analysis

Author : Siu-Kui Au

Published in: Operational Modal Analysis

Publisher: Springer Singapore

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Abstract

This chapter presents some basic tools for analyzing a sample history of ambient data. Procedures for plotting the power spectral density and singular value spectra are presented. Their theoretical statistical properties near the resonance band of a structural vibration mode are discussed, allowing one to interpret and detect potential modes in applications. A detailed example with field data is presented to illustrate in a step-by-step manner the procedures and considerations in the production and analysis of these spectra. Ambient data of other nature are also discussed, including asynchronous data that exhibits artificial vibration modes in their spectra, and microtremor data that can be used to infer site characteristics. Procedures for generating synthetic ambient data are presented, which are useful for verifying algorithms or parametric studies.

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previous chapter Measurement Basics
next chapter Bayesian Inference
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Metadata
Title
Ambient Data Modeling and Analysis
Author
Siu-Kui Au
Copyright Year
2017
Publisher
Springer Singapore
Book
Operational Modal Analysis

Print ISBN: 978-981-10-4117-4

Electronic ISBN: 978-981-10-4118-1

Copyright Year: 2017

DOI
https://doi.org/10.1007/978-981-10-4118-1_7

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