I setup 2 Holyiot nRF54L DK Development Boards with the channel sounding sample code from NCS 3.1.1 samples/bluetooth/channel_sounding_ras_initiator (initiator and reflector) and made the follwoing measurement:
distance 0.3m ifft: 0.65
distance 0.55m ifft: 1.36
seems that the measured distance always correspond to about twice the actual amount? Is it due to a different antenne on the Holyiot board? How to calibrate?