Grating Lobe Suppression Through Novel, Sparse Laser Induced Phased Array Design
Grating Lobe Suppression Through Novel, Sparse Laser Induced Phased Array Design
复制标题
通过新颖的稀疏激光诱导相控阵设计抑制光栅瓣
DOI：
10.1109/ius54386.2022.9958020
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Lukacs P
中科院分区：
文献类型：
--
作者：
Lukacs P
激光感应相控阵（利帕）是一种非接触、无耦合剂的检测技术，可提供高质量的超声成像。LIPA使用激光器进行超声生成和检测：超声波束形成在后处理中使用延迟和求和算法进行，而数据采集则通过扫描两个激光器来完成，从而在阵列设计中提供了独特的灵活性，这是目前传统的基于换能器的相控阵列无法实现的。当合成2D利帕时，可以实现3D成像。然而，由于机械扫描和2D阵列所需的大量元件，LIPA采集是耗时的，限制了该技术的潜力。克服这种限制的一种方法是减少阵列元件的数量，然而这可能导致栅瓣的产生，从而导致成像伪影。光栅瓣可以通过仔细的利帕设计来抑制，这在本研究中进行了探讨。快速阵列原型合成3阵列设计，使用相同的实验装置。
Laser Induced Phased Array (LIPA) is a non-contact, couplant-free inspection technique providing high quality ultrasonic imaging. LIPAs use lasers for ultrasound generation and detection: ultrasonic beam forming is performed in post processing, using delay-and-sum algorithms, while the data acquisition is done by scanning the two lasers, offering a unique flexibility in array designs that are currently impossible to achieve with conventional transducer based phased arrays. When synthesizing a 2D LIPA, 3D imaging can be achieved. However, due to the mechanical scanning and the large number of elements required for 2D arrays, LIPAs acquisition is time consuming, limiting the potential of the technique. One approach to overcome this limitation is to reduce the number of array elements, however this can lead to the production of grating lobes, resulting in imaging artefacts. Grating lobes can be suppressed through careful LIPA design and this is explored in this study. Rapid array prototyping is demonstrated for synthesizing 3 arrays designs using the same experimental setup.
影响因子：
2.4
作者：
Wooh, SC;Shi, YJ
通讯作者：
Shi, YJ
用于超声成像的非周期性和确定性二维相控阵结构
DOI：
--
发表时间：
2009
期刊：
2009 IEEE International Ultrasonics Symposium
影响因子：
--
作者：
A. Tweedie;V. Murray;G. Hayward
通讯作者：
G. Hayward