On Mar 19, 12:07*pm, Richard Clark wrote:
On Sat, 19 Mar 2011 07:51:45 -0500, Mike Coslo wrote:
On 3/18/2011 1:16 PM, Richard Clark wrote:

How did this slip from "near IR" to 32 GHz?

Hello Richard!

Hello Mike,

Welcome back to the Land of Odds.

The idea that "we" have a transmitter on *Mars notwithstanding, Jupiter
has been transmitting RF for a long time.

"The intensity of Jovian radio emissions usually varies smoothly with
time; however, Jupiter periodically emits short and powerful bursts (S

It would be difficult to make measurements of dispersive propagation
in the interplanetary media using the natural emissions of Jupiter,
since you don't have knowledge of the relative phases/timing of the
emissions at different frequencies, so you have nothing to compare
against on earth.

If you had two receivers in space separated by some distance along a
line from Jupiter, maybe you could do it. If they're on earth, I
think the ionospheric variation would dominate your measurement.

That said, at least you can get a big frequency ratio so the 1/f1^2-1/
f2^2 term would be large.

Maybe the folks building LOFAR have some clever ideas on compensating
for the ionosphere and they will be able to use Jupiter as a source
for this sort of measurement (if they're interested.... I suspect
they're not..)