robot control via RF beacons & triangulation

[dgebert48]

Hi

 

[stilgar]

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.

 

[mugsby]

you might want to read up on the doppler effect.

 

[Ilias2]

I.M.H.O use Ultrasonics.
-Simpler to interface with
-Cheaper to interface with
-Simple distance calculations the doppler effect is readilly available

In 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 rest

FAQ-0005.pdf.zip