I'm trying to learn about the Sonar Equation and how to apply it. Can anyone assist with the following problem?
The questions below will require your use of the sonar equation:
Given the following:
Two way depth = 120m
IR (intensity received) = 143dB
SL (signal loss) = 192dB
TL (transmission loss) = 42dB
IT (intensity at target) = 150dB
ReRI (re-radiated intensity) = 150 + TS
1) Draw up a sonar equation.
2) What is the range between the source and target?
3) Calculate a (absorption coefficient).
4) What is the ration between transmission loss due to spreading and the loss due to absorption?
On the seabed we've installed a transponder. The SL of the transponder at a range of 2,000m from the vessel is
195dB. The absorption coefficient is 5dB/Km. The truster noise is 110dB and the distance between the truster and
transducer is is 100m. The SNR is 21dB.
1) What is the intensity received at the transducer?
2) Can the signal be detected by the transducer?