Figure 4.

(a) Heat map of the normalized tag time delay ${(\tilde{\mathrm{\Delta }}\tau )}_{\mathit{mn}}={(\mathrm{\Delta }\tau )}_{\mathit{mn}}/{(\mathrm{\Delta }\tau )}_{18}$ for $m=1,8$ and $n=1,8$. (b) Inter tag spacing in the normalized unit where $d_{18}=1.0$. The normalized tag time delays are proportional to the normalized spacing distances validate the accuracy of Method I. (c) Table contains the actual tag positions and normalized inter-spacing distances.