I have a question about TWR strategy.
I have a network with 30 anchors and 1 tag and I save the location data in a .csv log file to be able to make some statistics and retrieve the trajectory offline.
In some cases I observe that in the log files there are “holes” in the trajectory, meaning that for a certain period of about 15 seconds the calculated locations of the tag are always (0, 0, 0).
What could be the problem? The anchors are spaced about 20 meters from each other and in LOS as adviced in the documentation…
In section 4.9 Tag’s TWR strategy the document DWM1001 System Overview and Performance, version 2.0 says “(if it does not know its position it will use 0, 0, 0)”.What does it mean? Why the tag does not know its position? In some cases the tag receive the positions from just 2 anchors but in that cases in the log file i see the repetition of the last position known… Maybe there can be another reason?
Thanks for reply,