[time-nuts] Ultra low phase noise floor measurement system for RF devices.
SAIDJACK at aol.com
SAIDJACK at aol.com
Sat Mar 31 19:16:45 EDT 2007
In a message dated 3/30/2007 23:47:12 Pacific Daylight Time,
bruce.griffiths at xtra.co.nz writes:
Thermal noise and other noise in each channel are statistically
independent and their product averages to zero.
The actual residual decreases as the number of spectra averaged increases.
Hi Bruce,
hmmm. Not sure I understand. I thought that if you average Gaussian noise
sources the noise would only be reduced by a factor of root(n), n being the
number of channels; and not totally cancel out? Is the difference caused by
creating a product of the two channels rather than a summation?
bye,
Said
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