IEEE Trans Ultrason Ferroelectr Freq Control. 2020 Oct;67(10):2095-2102. doi: 10.1109/TUFFC.2020.2993583. Epub 2020 May 11.
In the medical fields, ultrasound detection is often performed with piezoelectric arrays that enable one to simultaneously map the acoustic fields at several positions. In this work, we develop a novel method for transforming a single-element ultrasound detector into an effective detection array by spatially filtering the incoming acoustic fields using a binary acoustic mask coded with cyclic Hadamard patterns. By scanning the mask in front of the detector, we obtain a multiplexed measurement data set from which a map of the acoustic field is analytically constructed. We experimentally demonstrate our method by transforming a single-element ultrasound detector into 1-D arrays with up to 59 elements.
在医学领域，通常使用压电阵列进行超声检测，这使得人们能够同时在多个位置映射声场。在这项工作中，我们开发了一种新方法，通过使用编码有循环 Hadamard 模式的二进制声掩模对入射声场进行空间滤波，将单个超声探测器转换为有效的检测阵列。通过在探测器前扫描掩模，我们从其中获得了声场的分析构建的复用测量数据集。我们通过将单个超声探测器转换为具有多达 59 个元件的 1-D 阵列来实验证明我们的方法。
