Cylindrical small target detection sonar array with selectable horizontal coverage range

Abstract

The invention discloses a cylindrical small target detection sonar array with a selectable horizontal coverage range. The cylindrical small target detection sonar array comprises an electronic bin shell, a transmitting transducer array, a receiving transducer array, a transmitting transformer and the like, wherein the transmitting transducer array is composed of at least two arc array channels, all the arc array channels are evenly distributed in the circumferential direction of the transmitting transducer array, all the arc array channels jointly cover the horizontal 360-degree direction, and each arc array channel is connected with one transmitting transformer and driven by the corresponding transmitting transformer. All or part of arc array channels can be selected to work according to the working environment condition, when part of arc array channels are selected to work, several adjacent continuous arc array channels are generally selected to form a large arc array to work, subsequent signal processing such as beam forming is facilitated, and therefore when the antenna works in the near-shore port environment, the arc array channels directly facing the shoreside can choose not to emit sound wave signals, and reverberation interference from the shoreside is effectively restrained.

Description

technical field [0001] The invention belongs to the technical field of underwater small target detection, in particular to a cylindrical small target detection sonar base array with optional horizontal coverage. Background technique [0002] Small target detection sonar is an important means to protect ports and surface ships from underwater slow-moving targets with small physical size such as frogmen and UUVs. It was gradually developed under the guidance of the maritime strategic guidelines of western developed countries. In the past, the United States and NATO pursued "blue water naval warfare". The objects of maritime detection and defense were mainly large targets such as ships and submarines. The protection of military and commercial ports was mostly limited to the air, and the demand for underwater defense was not high. Moreover, at that time, almost no country had developed small and quiet underwater vehicles suitable for diving into ports and transporting frogmen, a...

AI Technical Summary

Problems solved by technology

[0007] At present, the cylindrical transducer matrix commonly used in domestic and foreign small target detection sonars adopts omnidirectional 360-degree horizontal emission and reception to realize the detection and tracking of underwater slow and small targets; however, in the future When the cylindrical transducer matrix is ​​deployed in nearshore ports for underwater security, the small target detection sonar uses 360-degree omnidirectional emission of sound waves, and the reverberation interference brought by the shore will seriously affect the detection effect of the sonar

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