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Subject: Re: Mesuring distance / angle

Date: 10/22/03 at 9:00 AM
Posted by: Ray
E-mail: rrogers@plaidheron.com
Message Posted:

In Reply to: Mesuring distance / angle posted by Edwin on 10/13/03 at 4:04 PM:

I can not directly help you. I could design one but that would take money and effort, but check out non-destructive testing companies. They might have something close to what you want.

I can tell you that for _listening_ on a planar surface and determining where the sound came from, we used it for detection of cracking of containment vessels; you arrange the microphones in a triangle and put one in the center. Then you can resolve the equations without ambiguities.
I think the company got a patent on it after I left; one of my more interesting developments and not in my name(:(:
Afterwards I learned the general mathematical principles about what I had done. I could have done a better job, instead of proving the correctness numerically.
Hindsite is really great, if humbling.


Ray


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