The number of anchors you need to cover the tracking area heavily depends on the environment of the area, as conditions are rarely ideal. Therefore, we cannot guarantee any one-size-fits-all rule. The best way to find out the approximate number of anchors needed for your tracking area is to contact our RTLS experts and provide them with the floorplan of the area and some pictures if possible. The preliminary setup for tracking can then be drafted based on the information provided.
In general, for 2D positioning, the minimum number of anchors needed is 3. However, we recommend 4 anchors for additional reliability and optimal precision. For 3D positioning, at least 4 anchors are required. With 4 anchors you can cover about 50×50 m (~2500 m2) in ideal conditions. In a difficult non-line-of-sight (nLoS) situation you need more anchors to provide the best precision possible.
If your layout does not allow a standard easy setup, contact us for guidance.