Underwater acoustic measuring device for large-depth broad lake surface

Abstract

The invention, which belongs to the technical field of vibration noise control measurement, particular relates to an underwater acoustic measuring device for a large-depth broad lake surface. According to the measuring device, when a GPS positioning system arranged at an unmanned aerial vehicle arrives at a designated water area, an anchoring effect is realized. During the testing process, a buoyancy tank is taken away from the water surface by using the unmanned aerial vehicle and a stabilizer is installed at the side of a self-contained hydrophone, so that the influences by the lake surfacewind flow and underwater ocean current are reduced. With the measuring device, anchoring of the self-contained hydrophone on a large-depth broad lake surface is realized and the influences by the lakesurface wind flow and underwater ocean current are reduced. Moreover, the measuring device has characteristics of simple structure, great easiness in implementation, high reliability, great convenience in mounting, and high environmental adaptability.

Description

technical field [0001] The invention specifically relates to a hydroacoustic measurement device capable of anchoring on a large-depth open lake surface and resisting wind flow on the lake surface, and belongs to the technical field of vibration and noise control measurement. Background technique [0002] Hydrodynamic noise is an important source of radiated noise when underwater vehicles run at high speeds. The floating test method can effectively separate the influence of mechanical noise and propeller noise. This method is also the most effective hydrodynamic noise test method. Floating tests are generally carried out on large-deep open lakes. The traditional test method is to directly tie a self-contained hydrophone and a floating ball, and throw it on the lake to provide independent power for collection; or set up a hydroacoustic measurement device on a barge. If the self-contained hydrophone is directly thrown on the lake, the hydrophone will easily drift away with the...

AI Technical Summary

Problems solved by technology

If the self-contained hydrophone is directly thrown on the lake, the hydrophone will easily drift away with the wind on the lake. However, due to the open lake, the depth of the lake is very large, and the underwater situation is not clear, shore anchoring and lake bottom anchoring are used. way to fix very difficult

The underwater acoustic measurement device is installed on the barge. Due to safety reasons, the barge cannot be too close, and the accuracy of the underwater acoustic measurement is difficult to guarantee.

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