METHOD OF MEASUREMENT OF SOUND PRESSURE LEVEL OF UNDERWATER ACOUSTIC SOURCE IN NATURAL WATER RESERVOIR AND REFERENCE SIGNAL TRANSDUCER FOR ITS IMPLEMENTATION Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: underwater acoustic signals re received simultaneously by array of hydrophones from reference signal transducer and from source under test. Levels of received signals are compared then and further processing of results is conducted. In process of comparison of values of levels of received signals distances from array of hydrophones to reference signal transducer L_r and to tested source L_t are measured. Value of level of sound pressure of tested source P_t is found from equation P_t=P_r·(U_rec·L_r/φ_rL_t), where P_r is relative level of sound pressure of reference signal transducer; U_r and U_t are effective values of electrical voltages at output of array of hydrophones corresponding to signals from reference signal transducer and from tested source. Design of reference signal transducer is specified in description of invention. EFFECT: improved accuracy of measurements. 6 cl, 6 dwg