A Cylindrical Small Target Detection Sonar Array with Optional Horizontal Coverage

Abstract

The invention discloses a cylindrical small target detection sonar base array with optional horizontal coverage, which includes an electronic chamber shell, a transmitting transducer base array, a receiving transducer base array, a transmitting transformer and the like. Wherein, the transmitting transducer base array is composed of at least two circular arc array channels, and each circular arc array channel is evenly distributed in the circumferential direction of the transmitting transducer base array, and all the circular arc array channels jointly cover the horizontal 360-degree direction, Each channel of the circular arc array is connected to a transmission transformer and is driven by the corresponding transmission transformer. The present invention can select all or part of the circular arc array channels to work according to the working environment. When selecting part of the circular arc array channels to work, generally select adjacent consecutive circular arc array channels to form a large circular arc array for work, which is convenient Carry out follow-up signal processing such as beamforming, so that when working in a near-shore port environment, the circular arc array channel facing the shore can choose not to emit acoustic signals, effectively suppressing the reverberation interference from the shore.

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...

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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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