NRF54l15 best accuracy possible

[Triscuit]

Hi,

I found that the NRF 54l15 can only estimate distance based on channel sounding and RSSI. On the bluetooth website it mentioned channel sounding accuracy being around 20cm. But when I test it myself it is up to 50cm and then sometimes 1m off. Since 54l15 only has channel sounding and RSSI to get distance, is combining the two of them to achieve 2cm accuracy possible? Is there any way to make the NRF 54l15 achieve 2cm accuracy? Thank you so much in advance.

[Simonr]

Hi

I don't know if I can do the "expert" tag justice, but I'll try to help to the best of my abilities.

Phase based ranging with one antenna, will per specification not be more accurate that 50cm. We are constantly working on improving our ranging algorithm and are looking into using multi-antenna solution that will likely improve accuracy, but down to 2cm accuracy will not be feasible with channel sounding I'm afraid. That exactly is the use case you're looking at here, and what range and environment will the device be operating in and requiring 2cm accuracy at?

Best regards,

Simon

[Triscuit]

I am trying to create a trilateration system and it will be outdoors, I am not too sure what range. I already kind of knew it would not be possible, I just wanted some confirmation. Thank you so much for the reply.