A Study for Optimum Survey Method of Underwater Structure Using the Dual Sonar Sensor

Table 6

Coefficient of effective factors.

	Effective factors
Towfish (L) (structure)	Depth	−0.308	−0.740	−3.966	0.001
	Distance	3.708	0.600	3.215	0.006
Towfish (L) (bed)	Depth	−1.089	−8.099	−2.706	0.016
	Distance	2.042	7.390	2.469	0.026
Towfish (R) (bed)	Depth	−0.637	−0.983	−9.245	0.000
	Distance	1.801	0.187	1.762	0.098