Round Trip Time measurement with nRF51-DK using Adv and scanner with 1-2m Accuracy

RE: Round Trip Time measurement with nRF51-DK using Adv and scanner with 1-2m Accuracy

AmbystomaLabs — Sat, 07 Apr 2018 16:15:57 GMT

I'm sorry I'm not getting into a flame war.

Next time respect the time people donate to this site and if you are coming from a professional background actually do some homework first before asking an obviously no-go solution.

It doesn't help the site and takes time away from other users who are not from a professional background.

RE: Round Trip Time measurement with nRF51-DK using Adv and scanner with 1-2m Accuracy

ssuresh — Sat, 07 Apr 2018 15:59:08 GMT

Thanks for your time in typing the response. First you need to be more respectful in responses. There are already commercial systems with BLE with < 2m accuracy and I have seen thesis with the same as well. Hence the question was posted. Regarding my credibility of physics and wireless, have successfully designed, developed and released wireless products in the market. Thanks again.

RE: Round Trip Time measurement with nRF51-DK using Adv and scanner with 1-2m Accuracy

AmbystomaLabs — Sat, 07 Apr 2018 15:52:07 GMT

This is impossible with the nRF. 1meter accuracy equates to 3.33nsec accuracy. The nRF is a 64 MHz processor. One clock cycle alone is nearly 5 times greater than that and we haven't even started considering clock jitter, frequency accuracy and radio protocol software latency.