07/21/2003 07:21:28 AM
Speaking from no direct experience, I think a ground sensor is a reasonable
and inexpensive gizmo. I would however be fairly surprised if the
(typically) 40kHz
sonar system worked in the aircraft environment due to inherent vibrations
of the
airframe making the signal to noise ratio too small to use. Actual radar
is relatively
expensive (I have looked into automatic door radar sensors). The
alternative is one
I have been playing with a bit - an infrared optical detector. If it works,
I'll let you know.
Ira N224XS in paint shop
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