I have been trying to implement the process to identify an antenna delay of a board as described in section “2.2 Reference Device Generation” of the APS014 document and wondered if the formula in Figure 5 (page 10) may be incorrect.
In the figure, it says
" tof_candidate = [2Del_chip1 + 2Del_chip2 _+ 4tof_measured] / 4. "
However, as far as I understand, the tof_measured variable is a measurement taken with antenna delays are set to zero and, therefore, I guess the formula should go like this
"tof_candidate = [4tof_measured - 2Del_chip1 - 2Del_chip2] / 4. "
To confirm my understanding, I used the sample data as given in the Table 3 of the document and it showed that the first formula will never give the results close to the given correct answer.
But when I used the second formula, it returns the results very close to the given answer right away.
Can anyone confirm if the formula given in the ASP014 is already correct?