摘要
基于地下电波法,采用面向对象模块化设计思想开发了地下三维金属目标电磁散射仿真软件。首先,介绍了该仿真软件所采用的数值计算方法:①根据海伦积分方程求解对称天线上电流分布,进一步求其辐射场;②基于电场积分方程求解散射体的感应电流,计算出散射场与总场。然后,从基本结构、功能方面,整体介绍该仿真软件设计思想与结构;并按功能分为主控模块、工程管理模块、输入模块、分析计算模块,分模块介绍该软件的具体设计与实现。最后,通过一个仿真实例验证该软件的性能。仿真结果表明,本软件的仿真结果与测试数据基本吻合,故该软件具有可靠性与有效性。因此,该仿真软件对地下目标散射特性分析及对地下物探深层介质中异物体的探测等具有直接指导意义。
Based on the underground EM wave method, the electromagnetic scattering emulation software for 3D metal target in a lossy medium is developed with the methodology of modularization and the paradigm of object-oriented design. Firstly, the numerical method of the simulation software is as follows. （1） Hallen integral equation is solved to analyze the antenna＇s currents; （2） based on the Electric Field Integral Equation （EFIE）, the surface currents of the metal target is calculated, to obtain the scattering field and the total field. The basic structure and functions of the software are as follows. It is composed of control module, project management module, input module, analysis and calculation modules. The specific design and implementation of the software are described in this paper by modules. The new algorithm is verified by a simulating instance. It is shown that the emulation results agree well with the experiment results, which indicates the reliability and the validity of the software. The software can be used for analysis of scattering characteristics of underground targets and the different objects detection in geophysical exploration in the deep underground medium.
出处
《科技导报》
CAS
CSCD
北大核心
2010年第1期90-93,共4页
Science & Technology Review
基金
中国高技术研究发展计划(863计划)项目(2006AA06Z136)
关键词
地下电波法
电磁散射
海伦积分方程
电场积分方程
underground EM wave method
electromagnetic scattering
Hallen integral equation
electric field integral equation
