Positioning equipment

This is a technical subject! No need to be able to spell! That will come later when it is necessary to make presentations to management groups and investors?

Apparently, properly formed interrogatives are also low on your list! Is your last sentence a statement or a question?

Don't dick around with the trackball, too touchy. Use GPS, get the job done easily and without fuss, and spend the rest of your time doing something more enjoyable with your uni time - like chicks, beer, or whatever ;-)

Unless of course you get extra credit for a non-obvious soution, GPS is just too easy these days, in which case it might be worthwhile pursuing the trackball.

Dave.

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GPS would seem to be the solution... but that 10cm tolerance is a problem. That's about 4 inches. Nelson

messagenews: snipped-for-privacy@k35g2000prh.googlegroups.com...

Yes, it's a ridiculously tight spec. Their "object" is likely going to be bigger than that. 10cm is not out of the bounds of professional surveying GPS units, but they are not cheap.

I assume the OP is US based so that means WAAS access which improves things. With averaging and a good antenna you should be able to get sub 1m repeatability with a

another posibility is to use x/y/z accelerometers to keep track of exact movement and subsequent offsett from some base/starting position

requires no external refernce point other than a know starting position

self contained rate of change and virtual location software might be tricky in a cost effective package though.