I see there is a comment in PDoA node source code:
/* For best PDoA performance the clock offset between PDoA node and the tag
- should be >2ppm.
- In case Tag’s crystal is very off, it also will be trimmed to stay in the [2 … 4]ppm range,
- as defined below:
so my question is : why we need at least 2ppm clock offset between tag & node to get a good PDoA performance?
I thought the clock offset should be as small as possible.
DW Remark : this product is now known as Phase Difference of Arrival (PDoA). The end result is the same as it gives the relative position of the tag using the node as a reference.