The delay & sum algorithm applied to microphone array measurements: Numerical analysis and experimental validation 来自 Semantic Scholar 喜欢 0 阅读量: 129 作者:A Cigada,F Ripamonti,M Vanali 摘要: The experimental validation of the beamforming technique applied to microphone array measurements is ...
从每一个来看,grating lobe就是栅瓣: 二、Delay and sum DSB核心的思想就是延迟相加,对于栅瓣的DOA估计需要解模糊。假设估计出DOA,进行补偿之后(delay)通过叠加(sum)就可以实现目标信号的增强: 关于delay的操作,可以在时域进行也可以在频域进行,本质上是小数延迟的问题(fractional delays).例如对于下面的dual-channel...
这篇文章主要有两点特色: 1)在Frost’s algorithm基础上,进行了理论扩展; 2)论述了基于麦克风阵列的GSC框架.一、理论回顾 假设噪声为加性: 其中s是desired signal,n 是noise.m为第m个麦克风,m∈[1 双麦克风语音增强之ANF 自适应零点形成 概述ANF(Adaptive Null-Forming,自适应零点形成)是双麦克风阵列处理中实现...
Improved real-time delay-multiply-and-sum beamforming with coherence factor Delay-and-sum (DAS) beamforming is the most commonly used algorithm to form photoacoustic (PA) and ultrasound (US) images because of its simple implementation. However, it has several drawbacks such as low image resolutio...
Echo state networks (ESNs) are a novel approach to recurrent neural network training with the advantage of a very simple and linear learning algorithm. It has been demonstrated that ESNs outperform other methods on a number of benchmark tasks. Although the approach is appealing, there are still...
Here, we describe double-stage delay-multiply-and-sum (DS-DMAS) to improve image quality collected on a LED-based scanner. DS-DMAS was evaluated experimentally using point targets (in different laterals and depths) as well as a hair and a rabbit eye. This algorithm can compensate for the ...
Performance enhancement in blockchain based IoT data sharing using lightweight consensus algorithm ArticleOpen access04 November 2024 Blockchain-based energy consumption approaches in IoT ArticleOpen access15 November 2024 A scalable blockchain based framework for efficient IoT data management using lightweig...
The performance of the proposed algorithm was compared with two established algorithms, i.e., normalized cross-correlation (NCC) and sum of squared differences (SSD), using metrics such as statistical analysis and computational time. All simulated ultrasound echo signals were generated using ultrasound...
This paper also investigates the experimental data that prove the enhanced performance of the algorithm. 展开 关键词: breast imaging compressed sensing delay multiply and sum iterative correction microwave imaging DOI: 10.3390/diagnostics11030470 年份: 2021 ...
Twitter Google Share on Facebook delay release sinker A sinker which holds a moored mine on the sea-bed for a predetermined time after laying. Dictionary of Military and Associated Terms. US Department of Defense 2005. Want to thank TFD for its existence?Tell a friend about us, add a link...