柱坐标下的Crank-Nicolson时域有限差分法及其在水下未爆弹探测与分类中的应用

2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) Pub Date : 2018-09-01 DOI:10.1109/DIPED.2018.8543126

Tornike Shubitidze, B. Barrowes, Evan Chapman, Mikheil Prishvin, K. O'Neill, F. Shubitidze

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引用次数: 1

摘要

提出了圆柱坐标系下求解水下电磁感应问题的无条件曲克-尼科尔森时域有限差分(CN-FDTD)格式方法。首先给出了CN-FDTD的一般公式，然后对导电多层结构中环形电流源激励的数值结果进行了验证。对CN-FDTD方法与传统FDTD方法进行了比较。研究结果证明了该算法在时域上对水下电磁干扰感应问题进行建模的准确性和能力。

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The Crank-Nicolson FDTD Method in Cylindrical Coordinates and Its Application to Underwater UXO Detection and Classification Problems

This paper presents the unconditional Crank -Nicolson finite-difference time-domain (CN-FDTD) scheme method in the cylindrical coordinate for solving underwater electromagnetic induction problems. First, a general CN-FDTD formulation is given, and then numerical results are demonstrated for a loop current source excitation in a conducting multilayer structure. The comparisons between CN-FDTD and traditional FDTD methods are given. The studies demonstrate the accuracy and capability of the proposed algorithm for modeling underwater EMI induction problems in the time domain.

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来源期刊

2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)

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