I posted this query sometime back but the issue still remains.
As a simple test to check tag accuracy, I repeatedly read the location for a static tag, it fluctuates a lot and the error sometimes goes beyond 50 cms. I have ensured that the tag is in the middle with perfect LoS with all 4 anchors. In the Android App, I could clearly see the tag location dancing randomly.
JFYI, I have accurately measured the anchor positions manually and configured them.
I am using MDEK1001 (connected to raspberry through USB) and calling dwm_pos_get to get location info.
Any pointer to understand this behavior and possible accuracy improvement suggestions would be highly appreciated.
Four anchors are placed in a rectangular area of dimension 8 x 2.5 m (each of them occupying a corner). Height is about 2.2 m.
The fluctuation in the tag position I observed is instantaneous reading (no averaging). It was evident to see this behavior in Android App’s Grid view. When I use multiple tags to understand better, the behavior seems to be more position dependent though all the tag positions were well inside the coverage area.