Method for reducing directivity fluctuation of arc array

A directivity and arc array technology, which is applied in the field of sonar emission array, can solve the problems of arc array directivity fluctuation and weak detection ability, and achieve the effect of improving directivity, reducing process difficulty, improving imaging quality and detection ability

Inactive Publication Date: 2019-05-21
HAIYING ENTERPRISE GROUP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reducing the directivity fluctuation of the arc

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  • Method for reducing directivity fluctuation of arc array
  • Method for reducing directivity fluctuation of arc array
  • Method for reducing directivity fluctuation of arc array

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Embodiment 1

[0019] The present invention provides a method for reducing the directivity fluctuation of the arc array, which includes setting the weight coefficients of primitives at both ends of the arc array to 0.3-0.5; preferably, the weight coefficient is set to 0.5. Specifically, the primitives that need to set weight coefficients are drawn in series in pairs, such as Figure 4 shown. It can be seen from the basic principle of the circuit that each primitive is assigned a weight coefficient of 0.5 when working, and the weighting is naturally realized.

[0020] Specifically, at both ends of the arc array, primitives with a weight coefficient of 0.3-0.5 respectively account for 3%-4% of the arc length of the arc array. that is Figure 4 Among them, at one end of the arc array, the primitives with a weight coefficient of 0.3 to 0.5 account for 3% to 4% of the arc length of the arc array; at the other end of the arc array, the primitives with a weight coefficient of 0.3 to 0.5 are also ...

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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...

Claims

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Application Information

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IPC IPC(8): G01S7/521
Inventor 李勤博王洪亮黄水兵唐燕民
Owner HAIYING ENTERPRISE GROUP
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