Hydrophone linear array and deployment method thereof

Abstract

The invention discloses a hydrophone linear array and a deployment method thereof. The hydrophone linear array comprises a support member and hydrophones; the hydrophones are embedded in the support member; the axis of the support member is perpendicular to the cross section of every hydrophone; the hydrophones are paired; each pair of hydrophones has a distance half the waveform; each pair of hydrophones is parallelly connected with any one other pair of hydrophones; the hydrophones in each pair are serially connected; the pairs of hydrophones are deployed on the support member according to radiation law of combined sound sources. theoretical and experimental results show that the pairs of hydrophones deployed in the deployment manner described in the technical scheme are better in antijamming capability than the prior art, the adverse effect of the end-fire directional noise upon receiving performance of the hydrophone linear array can be decreased and even eliminated, and output directionality is better.

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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