A computational method for the inversion of wide-band GPR measurements

6th International Workshop on New Computational Methods for Inverse Problems

物理学;计算机科学

Salucci, M.^1,2 ; Tenuti, L.^2 ; Poli, L.^2 ; Oliveri, G.^1,2 ; Massa, A.^1,2

ELEDIA at L2S - Laboratoire des Signaux et Systémes, UMR8506 (CNRS - CS - UPS), 3 rue Joliot-Curie, Gif-sur-Yvette

91192, France^1

ELEDIA at UniTN - University of Trento, Via Sommarive 9, Trento

I-38123, Italy^2

关键词: Ground penetrating radar (GPR);    Innovative method;    Inverse scattering;    Multi frequency;    Multiscaling;    Numerical results;    Particle swarm optimizers;    Stochastic nature;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/756/1/012008/pdf
DOI  :  10.1088/1742-6596/756/1/012008

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

An innovative method for the inversion of ground penetrating radar (GPR) measurements is presented. The proposed inverse scattering (IS) approach is based on the exploitation of wide-band data according to a multi-frequency (MF) strategy, and integrates a customized particle swarm optimizer (PSO) within the iterative multi-scaling approach (IMSA) to counteract the high non-linearity of the optimized cost function. If from the one hand the IMSA provides a reduction of the ratio between problem unknowns and informative data, on the other hand the stochastic nature of the PSO solver allows to »escape» from the high density of false solutions of the MF-IS subsurface problem. A set of representative numerical results verifies the effectiveness of the developed approach, as well as its superiority with respect to a deterministic implementation.