....the carrier-wave is an excellent scientific tool [if that's the correct word], and
is also data in itself.
You can measure the doppler-shift of the carrier-wave to
calculate wind speeds and vectors encountered during descent.
And any atmospheric turbulence [updrafts, downdrafts] are measurable
also.
Even after landing, if Huygens lands in liquid, its bobbing motion
would effect the reception of the carrier-wave; and the resulting oscillation
of the carrier-wave received could be interpreted as strong evidence of the presence of a
liquid surface its floating in...We'll soon find out.

Jacob