Acoustic distance measurement test results

[James Cameron]

On 19/11/2007, at 11:31 AM, Benjamin M. Schwartz wrote:
> The laptops were sitting directly on the ground.

Good, consistent results confirmed.

> Specifically, the laptops were sitting on the rubberized track  
> surrounding the
> field.  The surface appeared perfectly level to me, and free of  
> obstructions
> apart from myself.

Hmm, interesting.  Black rubberised track may contain a lot of  
carbon, may end up behing a good reflector for the signal.  Excluding  
grass improves the signal.

--
James Cameron