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	Optimal design of random sparse 2-D arrays based on genetic algorithm
	Huo Jian ; Yang Ping ; Shi Keren ; Zhang Wei
	2010-05-10 ; 2010-05-10
关键词	Practical Theoretical or Mathematical/ genetic algorithms ultrasonic imaging ultrasonic transducer arrays/ 3D ultrasound imaging 2D random sparse arrays 2D phased array optimal design genetic algorithm aperture size sparse ratio array reference continuous wave theory pulse ultrasound field model spatial impulse response grating lobes/ A4335 Ultrasonics, quantum acoustics, and physical effects of sound A4388 Transduction devices for the generation and reproduction of sound
中文摘要	In order to limit complexity of the 2D phased array and its 3D ultrasound imaging system, an optimal design method of random sparse 2D arrays based on genetic algorithm is developed. Firstly, the aperture size and the element weights of the array reference is pre-determined according to spatial resolution. Secondly, the sparse ratio is determined according to contrast resolution and the sparse array is designed by randomly removing a fraction of the original set of elements from the 2D array reference. Consequently, the distribution of the reserved element is optimized by the use of the genetic algorithm to achieve acceptable acoustic properties. The acoustic characteristic of the sparse arrays is analyzed through continuous wave theory and pulse ultrasound field model based on the spatial impulse response. Results show that sparse arrays based on genetic algorithm have a good overall performance. The main-lobe is practically unaffected by the random removal of elements, and grating lobes are avoided in these arrays, but the average side-lobe level increases a little. However, it can satisfy the needs for the high-quality ultrasound imaging when the sparse array is optimized using the genetic algorithm.
语种	中文 ; 中文
出版者	Inst. Acoust. Acad. Sinica ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24041]
专题	清华大学
推荐引用方式 GB/T 7714	Huo Jian,Yang Ping,Shi Keren,et al. Optimal design of random sparse 2-D arrays based on genetic algorithm[J],2010, 2010.
APA	Huo Jian,Yang Ping,Shi Keren,&Zhang Wei.(2010).Optimal design of random sparse 2-D arrays based on genetic algorithm..
MLA	Huo Jian,et al."Optimal design of random sparse 2-D arrays based on genetic algorithm".(2010).

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