|
I would rule out mobile phones, but there is an awful lot of other intermitent airbourne RF noise from other transmitters. Emergency services radio transmitters are very powerful for example.
What about broad spectrum RF noise from sparking? either from OHLE, or from good old 750V third rail.
*****
Possbly a bit off topic for a undergrad project, but the "lateral thinking" apprach would say "why fight the noise?" Why not [electronically] look for a distinctive traction motor noise as the signal you are trying to detect, rather than eliminate
Last edited by Shed Cat; 8th April 2008 at 20:20.
|