| 基于电磁层析的地面目标内部结构图像重建 |
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| 引用本文： | 秦瑶,王其富,屈乐乐. 基于电磁层析的地面目标内部结构图像重建[J]. 电波科学学报, 2016, 31(1): 143-149. DOI: 10.13443/j.cjors.2015021101 |
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| 作者姓名： | 秦瑶 王其富 屈乐乐 |
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| 作者单位： | 1.河南工业大学信息科学与工程学院, 郑州 450001 |
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| 基金项目： | 国家自然科学基金(61201389;11201120)，河南省高等学校重点科研项目(16A510003)，粮食信息与控制部级重点实验室开放基金课题(KFJJ-2015-102)，粮食公益性行业科研专项(201413003)，河南省科技厅重点科技攻关项目(152102310083)，河南工业大学省属高校基本科研业务费专项资金(2014YWQQ11) |
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| 摘 要： | 针对电磁层析成像技术在工程物探中, 采用钻孔方式进行地下介质内部结构探测有损的不足, 为适应电磁层析成像技术无损探测的需求, 研究了对地面目标内部结构探测的电磁层析成像技术, 基于电磁层析的探测方式、联合成像方法和图像重建技术, 为弥补跨孔探测方法应用于地面目标探测时, 其边界条件与传统的地下目标探测不同, 会对初至波的判断造成影响的不足, 采用时域有限差分法仿真分析了波的传播状态, 确定了初至波的提取方法, 给出了初至零点的判定方法, 并采用以上方法进行实验证实了对地上目标进行电磁层析成像的可行性和有效性.
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| 关 键 词： | 电磁波 层析成像 初至波 图像重建 |
| 收稿时间： | 2015-02-11 |
Electromagnetic tomography technology to image internal structure of overground target |
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| Affiliation: | 1.College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China2.Key Laboratory of Grain Information Processing and Control, Henan University of Technology, Ministry of Education, Zhengzhou 450001, China3.Institute of Applied Physics Henan Academy of Sciences, Zhengzhou 450001, China4.Shenyang Aerospace University College of Electronic and Information Engineering, Shenyang 110136, China |
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| Abstract: | Electromagnetic wave tomography technology is widely used in geophysical prospecting. Drilling method is the common way to detect the inside structures of underground targets. To enlarge electromagnetic wave tomography application range and raise its universality, this paper aimed to do the study of electromagnetic wave tomography on overground targets. At first, discuss the detecting method and unite tomography imaging algorithm. Then, according to the different boundary conditions of overground targets detecting, this paper uses FDTD method to simulate and analyze the distributing stage of electro-magnetic wave, makes clear the extract method of primary wave, and also gives out zero point exact method of primary arrival wave. At last, experiment results verify the effectiveness of electromagnetic wave tomography technology aimed on overground target. |
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| Keywords: | electromagnetic wave tomography primary wave image reconstruction |
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