Assessment of Own Noise of Underwater Glider Equipped with Combined Receivers

The problem of detecting low-noise sound sources against the background of interference in the marine environment is significantly complicated when the receiving system operates in shallow waters in the lower sound and infrasound frequency ranges. This problem is successfully solved using combined hydroacoustic receivers that measure pressure and components of the particle velocity vector. When using hydroacoustic receiving systems on board a moving carrier, it is necessary to ensure protection of the receiving system from the carrier's own noise. Such noise, called structural interference, includes flow noise and vibration-type noise, as well as noise caused by the operation of the buoyancy control system and horizontal thrusters. The paper investigates the effect of structural interference on the operation of combined receivers placed on board an underwater glider.