Microwave Imaging of ideal Cylinder in Free Space

卿安永; 李敬; 任朗

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Microwave Imaging of ideal Cylinder in Free Space

更新时间：2025-12-08

- Microwave Imaging of ideal Cylinder in Free Space
- Acta Electronica Sinica Issue 12, (1997)
- 作者机构：
  
  西南交通大学电磁所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN015
- Published：1997
- 稿件说明：
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[1]卿安永,李敬,任朗.自由空间中理想介质柱的微波成像[J].电子学报,1997(12):25-29+44.

卿安永, 李敬, 任朗. Microwave Imaging of ideal Cylinder in Free Space[J]. Acta Electronica Sinica, 1997, (12).
[1]卿安永,李敬,任朗.自由空间中理想介质柱的微波成像[J].电子学报,1997(12):25-29+44. DOI：

卿安永, 李敬, 任朗. Microwave Imaging of ideal Cylinder in Free Space[J]. Acta Electronica Sinica, 1997, (12). DOI：

摘要

本文探讨自由空间中理想介质柱的微波成像．文中首先从体等效原理出发，得到一个积分方程组，该方程组将介质柱的介电常数与柱内总电场及柱外接收点上的散射场联系起来，用矩量法，由此方程组出发可求解散射问题．并对该方程组求变分，所得到的方程组化为矩阵方程，消去含总电场的项，得到反演方程．文中列举了几个典型反演实例，考察了本法的收敛速度、运行时间及对复杂目标的适应能力等因素，所得结果相当满意．为了尽量与实际探测接近，还讨论了本法抗随机噪声的能力，模拟表明，本法具有相当强的抗噪声性能．文中还就用接收到的不完备的散射场信息反演目标的问题进行了初步探讨．

Abstract

The computer simulation of microwave imaging of ideal dielectric cylinder was considered inthis paper. By volume equivalence princiPle

a system of integral equations was obtained. They link the media’spermittivity with scattering field and total field. The direct scattering problem can be solved from them. At thesame time

the inversion equation was got after taking variation on these integral equations. The inversion equation was transformed into a matrix equation after using the Moment Method. Some examples of inversion werepresented .The effect of random noise was also investigsted in this paper. What’s more

the inversion using incomplete scattering information was discussed.

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