Method for reducing directivity fluctuation of arc array

Abstract

The invention, which belongs to the technical field of sonar emitter array, discloses a method for reducing the directivity fluctuation of an arc array. The method comprises: setting weight coefficients of base elements at both ends of an arc array to be 0.3 to 0.5. The elements needing weighting and the weight coefficient are found out; the voltage dividing effect is obtained based on element series connection, so that the needed weight coefficient is obtained; the directivity of the arc array is improved; the process difficulty is reduced; and the sonar imaging imaging quality and detectioncapability are enhanced.

Description

technical field [0001] The invention relates to the technical field of sonar emission arrays, in particular to a method for reducing directivity fluctuations of arc arrays. Background technique [0002] The launch array of high-frequency image sonar generally adopts an arc array, which is different from a linear array. The characteristic of an arc array is that its size is not limited by the opening angle. For such as figure 1 The larger arc array shown must use cuboid piezoelectric ceramic particles 1 to splice into the required arc, such as figure 2 shown as figure 1 A partially enlarged schematic diagram of the piezoelectric ceramic particle 1 is also called a primitive, and its size should be as small as possible. In fact, this arc array is a polygonal array. In theory, when the size of the piezoelectric ceramic particles 1 is small enough, the directivity pattern of this polygonal array is no different from that of the arc array. Such as image 3 , so this polygon...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reducing the directivity fluctuation of the arc array, so as to solve the problems of large directivity fluctuation and weak detection ability of the existing arc array

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