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arXiv 2602.24147math.NAcs.NA
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用于求解反散射问题的神经算子框架

A neural operator framework for solving inverse scattering problems

Inria, ENSTA Paris, UMA, Institut Polytechnique de Paris(法国国家数字与工程科学研究所、巴黎国立高等先进技术学院、应用数学系、巴黎理工学院)

Victor Chenu, Houssem Haddar, Hadrien Montanelli

AI总结:

本文提出了一种基于DeepONet的神经算子框架,用于解决反散射问题,通过神经切线核分析和正则化参数优化,实现高效的逆散射重建。

摘要:

我们提出了一种神经算子框架,用于求解反散射问题。神经算子产生散射体的初步指示函数,该函数经过适当缩放后,用作线性采样法中的正则化参数以验证初始重建。神经算子被实现为具有固定径向基函数主干的DeepONet,而所需的噪声水平用于缩放是通过专用神经网络估计的。神经切线核分析指导了架构设计,将网络调优减少到一个可根据波长调整的离散参数。二维数值实验展示了该方法的有效性,并提供了一个Python工具包以确保可重复性。

英文摘要:

We present a neural operator framework for solving inverse scattering problems. A neural operator produces a preliminary indicator function for the scatterer, which, after appropriate rescaling, is used as a regularization parameter within the Linear Sampling Method to validate the initial reconstruction. The neural operator is implemented as a DeepONet with a fixed radial-basis-function trunk, while the noise level required for rescaling is estimated using a dedicated neural network. A neural tangent kernel analysis guides the architectural design, reducing the network tuning to a single discretization parameter, adjustable according to the wavelength. Two-dimensional numerical experiments demonstrate the method's effectiveness, with a Python toolbox provided for reproducibility.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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