SV: NAVSPASUR

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> you can tell big satellites like the shuttle from small ones because  =20
they
> take longer to go through the beam: that certainly implies that the fan =20=
=20
is
> VERY narrow indeed!

A radio beam does not hav sharp edges, more like a bell-curved intensity.
So, the echo from a big satellite (high RadarCrossSection ?)  could be
heard from edge to edge, whereas a small satellite is only heard at the
center peak.


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