<div>To be honest I very much doubt the hardware in the wireless adaptors could measure time in single digit nanoseconds, and even if they could it would probably require a change in the over the air signal to use more bandwidth (spectrum) for a "pulse" to get better time resolution, which in turn would require hardware modification.</div>
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<div>I would think the sound and signal strength meter are better metrics. Remember although signal strength is a bad indicator by itself, it can be much improved with 2 aerials and the large number of possible pairs to measure signal strength between in a well linked mesh.<br>
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<div class="gmail_quote">On Wed, Apr 2, 2008 at 3:14 PM, Martin Langhoff <<a href="mailto:martin.langhoff@gmail.com">martin.langhoff@gmail.com</a>> wrote:<br>
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<div class="Ih2E3d">On Wed, Apr 2, 2008 at 4:27 AM, <<a href="mailto:david@lang.hm">david@lang.hm</a>> wrote:<br>> trying to work from signal strength won't work well, but you may be able<br>> to triangulate based on the arrival time of the signal at various<br>
> locations.<br>><br>> there are companies that do this commercialy with 3+ access points<br><br></div>The recommended configuration for mid-to-high-end school servers has 3<br>active antennaes attached, and our recommendation is that they are<br>
placed well apart. They can be up to 10m apart due to USB cable lenght<br>limits, and Wad mentioned 2m minimum recommended distance. If the<br>distance is enough (in relation to the granularity of timers in the<br>antennaes) then telling the XS about relative location of the<br>
antennaes could provide enough info.<br><br>Having said that, I suspect that being able to do any of the above is<br>somewhat far ahead in time ;-)<br><br>cheers,<br><br><br><br>m<br><font color="#888888">--<br> <a href="mailto:martin.langhoff@gmail.com">martin.langhoff@gmail.com</a><br>
<a href="mailto:martin@laptop.org">martin@laptop.org</a> -- School Server Architect<br> - ask interesting questions<br> - don't get distracted with shiny stuff - working code first<br> - <a href="http://wiki.laptop.org/go/User:Martinlanghoff" target="_blank">http://wiki.laptop.org/go/User:Martinlanghoff</a><br>
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