| 摘要 |
FIELD: measuring technique. ^ SUBSTANCE: method comprises using hydroacoustic measuring system that is made of combined receiver mounted on the sea bottom. The combined receiver simultaneously measures hydroacoustic pressure P, Pa and vertical component of velocity variation Z, m/s in the frequency band, and the level of sound pressure G, db is determined from equation G = 20log10(W0.5/P0), where P0 = 20 muPa and W = a(P)2 + b (Zrhoc)2 + dP(Zrhoc) under condition that the mean value W for the vertically upward direction is equal to the mean value of value (P)2 and d2 <> 4ab, where rho is the water density, kg/m3, c is the sound velocity in water, m/s, and a, b, d are the constant dimensionless coefficients. ^ EFFECT: simplified method and enhanced accuracy of measurements. ^ 1 cl, 1 dwg |
