I’m trying to make sense of the CIR output from the DW1000.
I am confused by two things:
Why does the leading edge always seems to output a value of ~740-750ns (FPhw) no matter what the distance between the transmitter and receiver?
When I move the Tx and Rx 30m apart there is no difference. Given the speed of light, this should cause a very noticeable ~100ns change.
Why is the leading edge so large? At 750ns, this is a distance of ~225m. This does not make sense especially when I place my Tx and Rx on the same tabletop. Even if I subtract out the antenna delay of ~510ns, this is a distance of ~70m, which also makes no sense.
I suspect there is something I’m misunderstanding here, can someone enlighten me?
Is there some way where I can normalize the output to get sensible numbers or have the leading path actually change given the distance between Tx and Rx?