Optimization of the Nonuniform Matrix Phased Array Layout for Efficient Volumetric Ultrasonic Imaging; Russian Journal of Nondestructive Testing; Vol. 62, iss. 4
| Parent link: | Russian Journal of Nondestructive Testing=Дефектоскопия.— .— New York: Pleiades Publishing, Ltd. Vol. 62, iss. 4.— 2026.— P. 419-426 |
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| Summary: | Title screen Implementing volumetric ultrasonic imaging based on the synthetic aperture focusing technique (SAFT) requires processing a large volume of ultrasonic signals and imposes high requirements on the ultrasonic transducers and multichannel ultrasonic electronics used. One promising approach to overcoming these challenges is to use non-uniform matrix phased arrays. Unlike conventional (uniform) matrix phased arrays, such probes enable a significant reduction in the number of active elements without a corresponding decrease in imaging quality. The layout of these probes is a key factor in determining their performance. Therefore, the array configuration must be chosen with respect to the ultrasonic imaging conditions. This paper proposes an algorithm for determining the optimal configuration of a non-uniform matrix phased array with active elements arranged in the form of a Fermat spiral. The algorithm is based on simulated annealing, which enables the effective solution of multi-parameter optimization problems. The developed algorithm was used to search for the optimal configuration under specific ultrasonic imaging conditions. Analysis showed that, under the considered inspection conditions, the obtained configuration has a point spread function that is narrow in the main lobe while having a low side lobe level. Furthermore, this non-uniform matrix phased array configuration reduces the number of elements by 9-fold compared to a uniform array, while maintaining the same aperture size. Experimental verification has confirmed that the proposed configuration provides high spatial resolution and a high signal-to-noise ratio in the restored acoustic images Текстовый файл AM_Agreement |
| Language: | English |
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2026
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| Online Access: | https://doi.org/10.1134/S1061830926600863 Статья на русском языке |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=688607 |
| Summary: | Title screen Implementing volumetric ultrasonic imaging based on the synthetic aperture focusing technique (SAFT) requires processing a large volume of ultrasonic signals and imposes high requirements on the ultrasonic transducers and multichannel ultrasonic electronics used. One promising approach to overcoming these challenges is to use non-uniform matrix phased arrays. Unlike conventional (uniform) matrix phased arrays, such probes enable a significant reduction in the number of active elements without a corresponding decrease in imaging quality. The layout of these probes is a key factor in determining their performance. Therefore, the array configuration must be chosen with respect to the ultrasonic imaging conditions. This paper proposes an algorithm for determining the optimal configuration of a non-uniform matrix phased array with active elements arranged in the form of a Fermat spiral. The algorithm is based on simulated annealing, which enables the effective solution of multi-parameter optimization problems. The developed algorithm was used to search for the optimal configuration under specific ultrasonic imaging conditions. Analysis showed that, under the considered inspection conditions, the obtained configuration has a point spread function that is narrow in the main lobe while having a low side lobe level. Furthermore, this non-uniform matrix phased array configuration reduces the number of elements by 9-fold compared to a uniform array, while maintaining the same aperture size. Experimental verification has confirmed that the proposed configuration provides high spatial resolution and a high signal-to-noise ratio in the restored acoustic images Текстовый файл AM_Agreement |
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| DOI: | 10.1134/S1061830926600863 |