METHOD OF MEASURING DIRECTIONAL CHARACTERISTIC OF HYDROACOUSTIC AERIAL Russian patent published in 1995 - IPC

FIELD: hydroacoustics. SUBSTANCE: underwater acoustic irradiator which has known directional characteristic K_t(α) is moved straight at the circumference of tested underwater acoustic aerial; output signal U_L of the aerial and values of distances L between the irradiator and the aerial are measured simultaneously. Directional characteristic K(K(α)) is determined from the relation given in the description of the invention ; , where U_b is stress at output of underwater acoustic aerial when it is disposed at beam distance L_b from the irradiator. EFFECT: improved precision. 3 cl, 3 dwg