Hi! As we know, LDE algorithm scans ACC_MEM and detects FP. The ACC_MEM array has a timestep of 1ns, while LDE detector’s resolution is 64 times better, according to 0x15’th FP_INDEX register value:

The first path (or leading edge) is a sub-nanosecond quantity. Each tap in the accumulator

corresponds to a sample time, which is approximately 1 nanosecond (or 30 cm in terms of the

radio signal’s flight time through air). To report the position of the leading edge more

accurately than this 1 nanosecond step size, the index value consist of a whole part and a

fraction part. The 10 most significant bits of FP_INDEX represent the integer portion of the

number and the 6 least significant bits represent the fractional part.

So, where does the “hidden salt” reside? Can I calculate that resolution on my own, analyzing ACC_MEM?

Stan