Averaging
Keywords: clic

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Averaging

The averaging of phase fluctutations will produce an amplitude decorrelation. For example, a phase jitter with gaussian noise will introduce a factor of decorrelation if the real and imaginary parts are averaged (this is the classical definition of complex averages). `CLIC` offers the possibility to do averaging on the real and imaginary part or to average amplitude and phase (see `SET AVERAGING` for more details). In the latter case, the amplitude bias may lead to surprising results in the case of low signal-to-noise. For instance, the amplitude of the low spectral resolution windows may not be the same as the high spectral resolution spectral windows. Note also that if the averaging implies a decorrelation, then baseline based factors are introduced and the closure relationship does not hold anymore for amplitude.