IEVref:103-09-05ID:
Language:enStatus: Obsolete
Term: power spectral density
Synonym1: power spectrum density
[Preferred]
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Definition: for a quantity having a continuous spectrum and a finite mean power, limit, at any frequency, of the quotient of the power within a frequency band containing that frequency by the bandwidth when the bandwidth tends to zero

NOTE 1 The instantaneous power of a quantity is by convention equal to the square of its instantaneous value. This square is proportional to a physical power if the considered quantity is a field quantity.

NOTE 2 The power spectral density is the Fourier transform of the autocorrelation function.


Publication date:2009-12
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 103-09-05en.gif
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