Multipath Analysis and Exploitation for MIMO Through-the-Wall Imaging Radar
IEEE journal of selected topics in applied earth observations and remote sensing(2018)
摘要
This paper considers the multipath modeling and exploitation problems for multiple input multiple output through-the-wall imaging radar. A multipath propagation model referring to two parallel walls is established, and the position distribution characteristics of the multipath ghosts in radar image are analyzed by means of geometric approximation. Therein, we find a feature that the locations of the walls can be obtained using the geometric relationship between the true target and its multipath ghosts. After utilizing constant false alarm rate technique and clustering approach, the coordinates of the multipath ghosts and the concealed target are achieved, and the positions of the two walls are obtained. Finally, simulation and experimental results validate the correctness of the multipath model and the validity of the multipath-exploitation-based wall localization method.
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关键词
Multipath analysis,multipath exploitation,multiple input multiple output (MIMO),through-the-wall imaging radar (TWIR)
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