On Wed, 11 Aug 2004 15:28:45 -0400, "Arny Krueger"
wrote:

"Goofball_star_dot_etal" wrote in message

On Wed, 11 Aug 2004 02:57:26 GMT, Randy Yates wrote:

An accelerometer, a la Velodyne?

And those who are not asleep will note that this is a very good
solution from an experimental point of view. Points to those that say
why.

It gives you acelleration, forthwith.

Integrate it (essentially pass it through a low pass filter) once and you
get velocity.

Integrate it again and you get position.

Every time you integrate it, a lot of spurious noise gets low-pass filtered
@ 6 dB/octave.


OK, 2 points but remember what Svante said. . and there is more. . .
Think "one variable at a time" and "how should we record and process
the accelerometer data?"