[time-nuts] Neutrinos not so fast? (defectove connector)

bg at lysator.liu.se bg at lysator.liu.se
Thu Feb 23 21:53:06 UTC 2012

> A possible mechanism occurs to me.  High-precision GPS is very vulnerable
> to multipath errors.  A loos connector will have a significant reflection.
> The reflected energy will propagate backwards, and be reflected off the
> transmitter output discontinuity, the twice-reflected energy propagating
> back to the receiver.  The original and the triple-transit echo will add
> coherently (for the modulation, not the photons)  in the receiver.  This
> is
> a perfect multipath scenario.  How long must the cable be?  Depends on the
> relative strength of main signal and triple-transit echo.

> Joe Gwinn


High precision GPS receivers use various correlator schemes that try to
minimize multipath. "Normal" GPS receivers are more vulnerable than
geodetic quality receivers.




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