[time-nuts] Fundamental limits on performance

Hal Murray hmurray at megapathdsl.net
Sun Sep 13 17:03:43 UTC 2009

bruce.griffiths at xtra.co.nz said:

> Adding a 210ft diameter antenna to the spacecraft just to detect a
> sufficient number of pulsars is probably not an option. 

> Unless a multibeam phased array is used simultaneous observation of
> several pulsars isnt possible. 

What sort of frequencies do people use to listen to pulsars?

Do I need 210 ft for collecting area or pointing accuracy?  Would a big 
phased array be useful and lighter?

Does anybody on Earth used phased arrays to listen to several pulsars 

> Kolmolgorov turbulence in the interstellar medium can cause all but
> the singals from the most distant pulsars to fade randomly. 

Ugh.  Now I have to figure out what that means.  It looks interesting, but my 
head hurts already.  Is there an analogy in the electrical world?

These are my opinions, not necessarily my employer's.  I hate spam.

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