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Ensemble decimation factors for reverberation chamber stirrer data.

Arnaut, L R (1999) Ensemble decimation factors for reverberation chamber stirrer data. NPL Report. CETM 12

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A spectral domain technique is presented for the accurate determination of decimation factors of stirrer data. The technique is based on using the ensemble autocorrelation function, which is obtained using low-pass filtering of the power spectral density function and appli-cation of the Wiener-Khinchine theorem. The technique yields decimation factors which are independent of the reference position of the stirrer. The technique is considerably faster than computation of decimation factors in the stirring domain. For sufficiently large sample sizes, it is found that the ensemble decimation factor are slightly, but consistently lower than the values obtained from the autocorrelation function in the stirring domain for a single realization of the process.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CETM 12
Keywords: reverberation chamber, mode-stirred cavity, EMC test environments, EMC immunity and vulnerability testing, data correlation, decimation factor, spectral analysis
Subjects: Electromagnetics
Last Modified: 02 Feb 2018 13:18
URI: http://eprintspublications.npl.co.uk/id/eprint/1177

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