Quantitative microwave imaging with a 2.45-GHz planar microwave camera
Quantitative microwave imaging with a 2.45-GHz planar microwave camera
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DOI：
10.1109/42.730400
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发表时间：
1998-08-01
影响因子：
10.6
通讯作者：
Bolomey, JC
中科院分区：
文献类型：
--
作者：
Franchois, A;Joisel, A;Bolomey, JC
本文提出了微波层析重建的复介电常数的有耗介质物体浸在水中的实验多视图近场数据获得的2.45 GHz的平面有源微波相机。采用基于Levenherg-Marquardt方法的迭代重建算法求解了将矩量法应用于电场积分表示时产生的非线性矩阵方程。通过对合成数据的重建，说明了外部介质复介电常数、成像系统几何形状和目标位置处入射场等实验参数的不确定性对重建的影响，其中入射场的不确定性对重建影响最大。接收机校准程序已经实施，并已评估了一些方法来访问在对象位置的入射场。
This paper presents microwave tomographic reconstructions of the complex permittivity of lossy dielectric objects immersed in water from experimental multiview near-field data obtained with a 2.45-GHz planar active microwave camera. An iterative reconstruction algorithm based on the Levenherg-Marquardt method was used to solve the nonlinear matrix equation which results when applying a moment method to the electric field integral representation. The effects of uncertainties in experimental parameters such as the exterior medium complex permittivity, the imaging system geometry and the incident field at the object location are illustrated by means of reconstructions from synthetic data, It appears that the uncertainties in the incident field have the strongest impact on the reconstructions. A receiver calibration procedure has been implemented and some ways to access to the incident field at the object location have been assessed.