A novel method to design sparse linear arrays for ultrasonic phased array

被引：28

作者：

Yang, Ping ^{[1
]}

Chen, Bin ^{[1
]}

Shi, Ke-Ren ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mech Engn, NDT Lab, Beijing 100084, Peoples R China

来源：

ULTRASONICS | 2006年 / 44卷

关键词：

ultrasonic phased array; sparse array; genetic algorithm; minimum redundancy linear array;

D O I：

10.1016/j.ultras.2006.05.131

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In ultrasonic phased array testing, a sparse array can increase the resolution by enlarging the aperture without adding system complexity. Designing a sparse array involves choosing the best or a better configuration from a large number of candidate arrays. We firstly designed sparse arrays by using a genetic algorithm, but found that the arrays have poor performance and poor consistency. So, a method based on the Minimum Redundancy Linear Array was then adopted. Some elements are determined by the minimum-redundancy array firstly in order to ensure spatial resolution and then a genetic algorithm is used to optimize the remaining elements. Sparse arrays designed by this method have much better performance and consistency compared to the arrays designed only by a genetic algorithm. Both simulation and experiment confirm the effectiveness. (c) 2006 Elsevier B. V. All rights reserved.

引用

页码：E717 / E721

页数：5

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