Simulation Study on Image Characteristics of Typical GPR Targets in Water Conservancy Projects

Table 7

Error analysis table of radar detection test for PVC pipes with different depths.

Target parameter	Actual depth (cm)	Two-way travel time (ns)	Detecting; depth (cm)	Buried depth error (cm)	Relative error (%)
PVC pipe on the south side with a buried depth of 10 cm	10.5	1.4444	10.833	0.333	3.2
PVC pipe on the north side with a buried depth of 10 cm	10	1.2939	9.704	-0.296	-3.0
PVC pipe on the south side with a buried depth of 20 cm	20	2.5532	19.149	-0.851	-4.3
PVC pipe on the north side with a buried depth of 20 cm	21	2.8535	21.401	0.401	1.9
PVC pipe on the south side with a buried depth of 30 cm	30	4.1451	31.088	1.088	3.6
PVC pipe on the north side with a buried depth of 30 cm	30	4.1095	30.821	0.821	2.7