Hi, I’m using a RTLS based on asymmetric two way ranging, with 1 Tag and different anchors. I’m using 850k data rate. I read on this forum that anchor responses have not to be sent at the same moment since the RX of Tag has to re-enable every time a frame is received. Anchors timing for responding to Tag is based on anchor ID, so that every anchor triggers the one with subsequent ID, starting from the ID 0. My aim is to reach up to 40-50 Hz update rate by working with 4-6 anchors, but I have different issues:
- sequential anchors responses, due to delay to re-enable tag RX, worsen a lot update rate. Therefore I switched to 6Mb data rate that works fine with MAXIMUM 2 anchors (update rate reaches up to 300Hz). With 3 or more anchors there’s a stuck of the whole system.
- sequential anchors responses based on ID results problematic when some anchor does not respond or misses. In that case the anchors respond basing on a delay that is proportional to own ID, and this event generates a lot of latency. This case is likely to happen when there are lot of anchors that are placed in different or big areas. Is there any strategy for anchor sequential responses NOT based on ID?
I thought the best thing to do is to use a TDOA approach, but for my application it is unfeasible. Any suggestion for solving these issues?