Analysis of Directivity of Adriatic Coastal Noise

The analysis of the directivity of sea was made applying one the methods for investigating noise directivity by simultaneous measuring of sound pressure in one axis by means of directional and omnidirectional hydrophones. The results of the investigation of sea noise directivity was investigated in the frequency range above 20 kHz, and the hydrophones were set to the depth of 30 m and 100 m. The paper represents a contribution to sea noise directivity investigation and optimisation of signal / noise underwater detection systems.