Research Article

Enhancement of Cross-Borehole Pulse Radar Signature on a Partially Water-Filled Tunnel

Table 2

The fastest TOP () and the fastest TOA () for 6 different height ratios of water in a tunnel () by considering the low and high dielectric properties of granite.

High dielectric graniteLow dielectric granite
(ns) (ns) (ns) (ns)

0.012.365316.88536.13079.0401
0.110.962516.83345.35148.9882
0.29.819516.52174.72798.6764
0.38.884316.10604.41628.3647
0.48.208915.58654.00057.8451
0.57.377614.80723.48107.2217