NDLI: Probability distribution of the quality factor of spacecraft structures modelled as undermoded reverberation chambers

Content Provider	IEEE Xplore Digital Library
Author	Arnaut, L.R. Gradoni, G.
Copyright Year	2012
Description	Author affiliation: Institute for Research in Electronics and Applied Physics, University of Maryland, USA (Gradoni, G.) \|\| Imperial College of Science, Technology and Medicine, United Kingdom (Arnaut, L.R.)
Abstract	In this paper, we discuss the electromagnetic modelling of a large spacecraft structure excited by relatively low frequencies. The intrinsic complexity of such a scenario allows for invoking an analogy with studies of mode-stirred cavities. We therefore derive a probability distribution of the quality factor of a reverberation chamber, operated at relatively long wavelengths compared to the characteristic dimensions of the cavity. In this regime, the cavity does not operate in overmoded regime, yet a statistical description of fields can be preserved provided a proper (physically based) limit distribution can be assumed. The method developed in our work is based on an instantaneous (sample), rather than an averaged (thermodynamic) value in the definition of the cavity quality factor. This factor is actually a random variable fluctuating over the stirring process, because of the changing geometry (mechanical sturring) and/or excitation frequency (electronic stirring). We find that the probability distribution in undermoded case deviates from the idealized one, as it exhibits stronger positive skewness.
Starting Page	1
Ending Page	4
File Size	411912
Page Count	4
File Format	PDF
ISBN	9781467303026
e-ISBN	9789290922667
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-21
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Space vehicles Fluctuations Q factor Reverberation chamber Cavity resonators Probability distribution Standards
Content Type	Text
Resource Type	Article

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Probability Distribution of the Quality Factor of a Mode-Stirred Reverberation Chamber

Measured probability distribution of the quality factor of a reverberation chamber

A statistics-based definition of the overmoded condition for reverberation chambers

Influence of reverberation chamber loading on extreme field strength

A One-Dimensional Interpretation of the Statistical Behavior of Reverberation Chambers

Evaluation Method for the Probability Distribution of the Quality Factor of Mode-Stirred Reverberation Chambers

Probability density function for the quality factor of vibrating reverberation chambers

Simulation of field uniformity in a reverberation chamber

Evaluation of effects on electromagnetic field characteristics inside aircraft due to phenol internal structures using a reverberation chamber

Probability distribution of the quality factor of spacecraft structures modelled as undermoded reverberation chambers

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