dgebert48 Posted May 8, 2006 Report Share Posted May 8, 2006 Hi Quote Link to comment Share on other sites More sharing options...
stilgar Posted October 2, 2006 Report Share Posted October 2, 2006 Hi dgebert,I think that determination of the distance between the anennae is done using either the volume of the signal. or by comparison of the nodes in the field. Quote Link to comment Share on other sites More sharing options...
mugsby Posted October 27, 2006 Report Share Posted October 27, 2006 you might want to read up on the doppler effect. Quote Link to comment Share on other sites More sharing options...
Ilias Posted November 7, 2006 Report Share Posted November 7, 2006 I.M.H.O use Ultrasonics.-Simpler to interface with-Cheaper to interface with-Simple distance calculations the doppler effect is readilly availableIn small distances you can not expect big RF signal variations indicating distance changes in the cm range.Ultrasonic and RF beacons are most of the time found wotking together like this:-According to the RF signal find which ultrasonic is operating.Eitherway the signal strenth in dB can be used to find the distance from the RF beacon.There is an attachement showing the relationship of signal strength with the distance. Once you find this the rest is easy. I can help you with the restFAQ-0005.pdf.zip Quote Link to comment Share on other sites More sharing options...
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