Research on measurement of underwater vehicle noise with single vector hydrophone

This paper focuses on the error of measuring underwater vehicle radiation noise by using a single vector hydrophone based on the waveguide environment. Firstly, the underwater vehicle and ocean waveguide environment are simulated, and then, the effects of receiving distance, sound source depth and water depth on the measurement results are studied separately based on the waveguide environment. Studies have shown that when the underwater vehicle and measuring equipment are at different distances, the sound source level error will be within 1.5dB by using a single vector hydrophone to measure the noise of underwater vehicle in the simulated measurement environment; when the underwater vehicle is located at the different depths of water, the sound source level of the wideband signal radiated by underwater vehicle is quite different; when the range of water depth from 100m to 800m, the sound source level error measured by single vector hydrophone is less than 1dB.