63
Reflection Loss (dB)
Frequency (kHz)
Reflection Loss (dB)
Frequency (kHz)
Reflection Loss
(Mackerel No.1)
Reflection Loss
(Mackerel No.2)
Species
Sardine
Bonito
Horse Mackerel
Sea Bream
Turbot
Average
Incident Direction of Ultrasonic Wave
Back Side Head
1 2 0.13
120.5
0.8-1.2 1.4-2.2 0.4-0.6
0.9 3 0.45
2
120.4