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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Ultrawideband Time-Reversal Imaging With Frequency Domain Sampling
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Ultrawideband Time-Reversal Imaging With Frequency Domain Sampling

机译：具有频域采样的超宽带时间反转成像

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摘要

A new ultrawideband (UWB) time-reversal imaging method based on the unconventional utilization of UWB frequency data is introduced. First, a set of monostatic antennas is used to acquire the scattering data for a given scenario. Then, a corresponding multistatic data matrix is formed by casting the fine and coarse frequency samples of the scattering information into matrix form. The resulting frequency–frequency monostatic matrix is later fed into the adapted DORT (French acronym for decomposition of the time-reversal operator) and MUSIC (Multiple-Signal Classification) algorithms. The performance of the proposed method is investigated numerically by applying it to discrete scatterers embedded in homogeneous and continuously random inhomogeneous media. The effect of frequency bandwidth on image resolution is studied. It is observed that wider frequency bandwidths yield to better focusing resolutions.
机译：介绍了一种基于超常规频率数据非常规利用的超宽带时间反转成像方法。首先，使用一组单基地天线来获取给定场景的散射数据。然后，通过将散射信息的精细和粗糙频率样本转换为矩阵形式来形成相应的多静态数据矩阵。所产生的频率-频率单静态矩阵随后被馈入经过调整的DORT（时间反转算符的法语首字母缩写）和MUSIC（多信号分类）算法。通过将其应用于嵌入均匀且连续随机的非均匀介质中的离散散射体，对所提出方法的性能进行了数值研究。研究了频率带宽对图像分辨率的影响。可以看出，较宽的频率带宽可产生更好的聚焦分辨率。

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