Theory and Testing of Electromagnetic Wave Polarization Phenomena for Improving Ground Penetrating Radar Subsurfacing Imaging

9818137丹尼尔斯该奖项支持的研究涉及利用电磁能量的矢量特性(通常称为极化)，在三维空间中利用多分量探地雷达(GPR)测量显著提高对埋藏物体的识别和清晰度。在这一支持下进行的实验旨在解决与探地雷达极化有关的下列问题：1)确定被设计为线性电偶极子的极化探地雷达电场的性质；2)开发根据简单几何物体(球体、平面和圆柱体)的实验测量来确定天线方向图的基本方法；3)开发测量、处理、显示和解释多分量极化测量的手段；以及4)建立一些常见目标的散射矩阵库。测试将使用俄亥俄州立大学的物理模型和有限差分时间域计算机建模软件进行。这些研究的结果将用于提高探地雷达数据三维显示的分辨率和清晰度。*

9818137DanielsThis award supports research that is concerned with significantly improving the recognition and definition of buried objects with multi-component ground penetrating radar (GPR) measurements in three dimensional space by utilizing the vector properties of electromagnetic energy, which is generally referred to as polarization. The experiments conducted with this support are designed to address the following problems related to GPR polarization: 1) determine the nature of the polarized GPR electric field from anennas that are designed as linear electric dipoles, 2)develop the basic methodology for determining antenna patterns from experimental measurements on simple geometric objects (sphere, plane and cylinder), 3) develop the means to measure, process, display and interpret multi-component polarization measurements, and 4) establish a library of scattering matrices for some common targets. The testing will be conducted using physical models located at the Ohio State University, and a finite difference time domain computer modeling software. Results of these studies will be used to improve the resolution and definition of three dimensional displays of GPR data.***