K 空间 Prony 方法生成多高斯波束模型的基函数。
K-space Prony's method for generating the basis functions of multi-Gaussian beam models.
机构信息
Center for NDE and the Dept. of Aerospace Engineering, Iowa State University, Ames, Iowa 50011, USA.
出版信息
Ultrasonics. 2010 May;50(6):600-5. doi: 10.1016/j.ultras.2009.12.005. Epub 2010 Jan 7.
The expansion coefficients of a multi-Gaussian ultrasonic beam model are obtained by a new approach that applies Prony s method in a K-space domain. This method allows the fitting of the Gaussian beam directly at the face of the transducer with very high computational efficiency. It is demonstrated that the K-space Prony's method can be used to accurately model the transducer field of planar and focused piston transducers, as well as probes that do not act as pistons. The choice of parameters appearing in the method and their influence on performance are discussed.
多高斯超声束模型的扩展系数通过一种新方法获得，该方法在 K 空间域中应用 Prony 方法。这种方法允许在换能器表面直接拟合高斯束，具有非常高的计算效率。结果表明，K 空间 Prony 方法可用于准确模拟平面和聚焦活塞换能器以及不作为活塞的探头的换能器场。讨论了方法中出现的参数选择及其对性能的影响。
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