测量区域划分优化用于声学断层扫描 速度 场重建在一个圆形区域
Yixiao Chen1, Xinzhi Zhou1, Jialiang Zhu1,2
1College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China.
Sensors (Basel, Switzerland)
|March 28, 2024
概括
本研究介绍了一种优化的声学断层扫描方法,用于在圆形区域中重建速度场. 这种新的方法提高了复杂流域的精度和实时测量.
科学领域:
- 流体动力学 流体动力学
- 声学断层扫描仪声学断层扫描仪声学断层扫描仪
- 信号处理 信号处理
背景情况:
- 声学断层扫描 (AT) 是一种非侵入性技术,用于准确的实时速度场测量.
- 现有的AT方法主要集中在矩形区域,由于传感器布局和路径选择,在循环领域的应用中面临挑战.
- 在圆形区域中重建速度场仍然是流体动力学研究中的重大挑战.
研究的目的:
- 开发一个优化的测量区分算法,用于圆形领域的声学断层扫描.
- 为了提高循环区域的速度场重建的准确性和稳定性.
- 解决现有的AT技术在非矩形几何形状中的局限性.
主要方法:
- 使用马尔科夫函数和奇数值分解 (MK-SVD) 重建算法.
- 设计了一种多路径声道分布,以克服传感器发射角度的限制.
- 开发了基于多个子目标的测量面积划分的自适应优化算法,包括条件数和路径分布均性,以变化系数 (CV) 权衡,并使用粒子群优化 (PSO) 进行优化.
主要成果:
- 成功提出并实施了一个优化的区域划分算法,用于循环区域速度场的重建.
- 使用开发的AT方法证明了有效的速度场重建.
- 通过模型和模拟速度现场实验验验证了算法的性能和反干扰能力.
结论:
- 拟议的自适应优化算法显著增强声学断层扫描用于循环区域的速度场重建.
- 该方法为复杂几何形状提供了强大的解决方案,克服了以前的局限性.
- 这一进步为非侵入性流量测量应用提供了更好的准确性和可靠性.
更多相关视频
10:13Non-Destructive Evaluation of Regional Cell Density Within Tumor Aggregates Following Drug Treatment
Published on: June 21, 2022
2.2K
07:53Author Spotlight: Advancing 3D Modeling for Enhanced Diagnosis and Treatment of Pulmonary Nodules in Early-Stage Lung Cancer
Published on: October 13, 2023
1.4K
相关概念视频
01:10Computed Tomography
7.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
7.6K
01:24Area Computation by the Alternative Coordinate Method
866
The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
866
01:24Finding Volume Using Cross-Sectional Area
280
For solids whose cross-sectional areas vary in a predictable way, volume can be determined by integrating these areas along an axis perpendicular to the slices. This approach is particularly useful for polyhedral solids, where classical geometric formulas may not be immediately applicable. A tetrahedron provides a clear example of how cross-sectional integration can be applied to a three-dimensional object with continuously changing geometry.Consider a tetrahedron with height h and a base that...
280