This AppNote describes how to use the phase difference measurement (PMU) to perform distance measurements with the AT86RF233. Is that even possible with these ICs?
Does anyone have any information what precision can be achieved and up to what maximum distance the distance measurements works. Are there any constraint where this works successfully?
I would like to use the ATmega256RFR2 for this task
Unfortunaly the referenced AppNote AVR2150 and AVR2152 (Section Further Reading) are not available from the Atmel website.