Geolocation Application with RAK7243

Hello to all.

I have a question regarding the implementation of geolocation applications with RAK7243. So RAK7243 has a GPS that, according to datasheet, provides accuracy of less than 30ns (RMS) and less than 60ns (99% of the times).

I haven’t read so far about the clock accuracy to implement TDoA. So, processing the received packets needs accurate GPS clock reference. If it is needed, is there any other hardware like Rak2245 that contains a more accurate GPS?

How about TDoA geolocation using lorawan with the rak7243, do you see it feasible given that clock accuracy?

I will appreciate any commets on these issues