A line array of hydrophones and its deployment method

Abstract

The invention discloses a line array of hydrophones and a laying method thereof. The line array of hydrophones comprises: a support and a hydrophone; wherein, the hydrophone is embedded in the support, and the axis of the support is vertical On the cross-section of each hydrophone, the hydrophones appear in pairs, and the interval between the two hydrophones in each pair of hydrophones is half of the wavelength. Each pair of hydrophones is connected to any other pair of hydrophones. The earphones are connected in parallel, and the two hydrophones in each pair of hydrophones are connected in series, and each pair of hydrophones is arranged on the support according to the law of radiation of the combined sound source. Theoretical and experimental results show that when each pair of hydrophones in the hydrophone line array is deployed according to the deployment method in the technical solution of the present invention, compared with the prior art, it has good anti-interference ability, and can reduce or even Eliminate the adverse effects of noise in the end-fire direction on the receiving performance of the hydrophone line array, and obtain good output directivity.

Description

technical field [0001] The invention relates to the technical field of acoustic signal processing, in particular to a line array of hydrophones and an arrangement method thereof. Background technique [0002] A hydrophone, also known as an underwater microphone, is a transducer that converts underwater acoustic signals into electrical signals. The hydrophone array refers to a sensor array in which multiple hydrophones are placed in different spatial positions in a certain way to form a fixed formation. In the fields of underwater navigation, underwater acoustic measurement, ocean exploration and development, hydrophone arrays have important applications. The hydrophone line array, as the basic form of the hydrophone array, plays a very important role in the hydrophone array, and its characteristic is that multiple hydrophones are arranged in a straight line in a certain way. Therefore, the research on the hydrophone line array is of great significance. [0003] There are ...

AI Technical Summary

Problems solved by technology

Among them, the significance of the existence of side lobes is: when there are side lobes, if there is noise in the end-fire direction of the hydrophone line array, it will affect the receiving performance of the hydrophone line array, and the directivity of the hydrophone line array is not good. it is good

However, the three hydrophone line arrays in the prior art have side lobes in the end-fire direction, that is, when there is noise in the end-fire direction, the output directivity of the hydrophone line array in the prior art is not good.

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