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Originally Posted by Dr.Sid
Direction of incoming sound is derived from time delay of signal on individual hydrophones. If rear hydrophones receive the sound before front ones, the sound source is behind the array. If the time delay is distance between hydrophones divided by speed of sound it means the target is exactly behind the array. If the delay is shorter by sin(45)=0.707 it means the target is 45 degrees from the array axis, if the delay is 0 it means the target is 90 degrees and so on.
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Thank you, Dr. Sid, for your answer. It makes sense to me.
In other words, with 4 constants which are the distance between each receptors, the time-lag between each receptor's receiving the signal, the speed of sound, and the TA's aligment, we could determine 2 possible directions of the sound source?
And if all receptors receives the signal at the same time, we could tell that the source is either 90 degrees to the left or the right?