WifiRtt Measurements

[TTong77]

When I compared the software with the google release wifirttscan synchronization, I found that the latter's measurement accuracy is quite small and stable, what is the reason for this difference? Could it be that the two are not using the same measurement principle?

[seijikun]

Hey, sorry for the late response.
The code we use to handle ftm is mostly cloned from the Wifirttscan app back when it was still open-source.

How does the frequency between both apps differ? Like: How often does the Wifirttscan app produce a measurement vs ours. The only thing I could think of is that the Wifirttscan app is simply doing a long-term average to smooth out the measurements. This should e.g. manifest itself, in the WifiRTTscan app responding more slowly when you quickly move the receiving unit away from the sending one.

Because in all our experiments, Wifi FTM just has proven to be terribly unreliable.