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

Figure 2

Indoor test and data.

(a) Indoor test

(b) Concept of indoor test

(c) Case  1 (distance 3 m)

(d) Case  2 (distance)

(e) Case  3 (degree L 20°)

(f) Case  4 (degree L 30°)