Image and Signal Processing Methods

Approach for through-wall detection under unknown wall characteristics

[+] Author Affiliations
Fang-Fang Wang, Ye-Rong Zhang, Hua-Mei Zhang

Nanjing University of Posts and Telecommunications, School of Electronic Science and Engineering, Nanjing 210003, China

J. Appl. Remote Sens. 10(3), 035016 (Aug 15, 2016). doi:10.1117/1.JRS.10.035016
History: Received March 31, 2016; Accepted August 2, 2016
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Abstract.  The most challenging aspect of through-wall imaging is the presence of the wall, which suppresses the detection and localization to the obscured scatterers. Moreover, wall parameters are not known in practice; how to detect the target without prior knowledge of the wall is becoming important. Therefore, an approach is proposed to solve this problem in this paper. First, an effective clutter mitigation method based on singular value decomposition is proposed to achieve the target scattering fields. After a number of data pairs that consist of the target position and its scattering fields have been collected, the through-wall detection problem can be resolved by extracting a nonlinear relationship between them. In this way, the presence of the wall is automatically included in the nonlinear relationship, which is obtained through a training phase using a support vector machine. For a detection task, the position of the target can be estimated from this nonlinear relationship. The whole detection procedure does not require the prior knowledge of the wall. Also, it is shown that the proposed method is effective. Moreover, the impacts of training samples and signal-to-noise ratio on detection accuracy are analyzed.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Fang-Fang Wang ; Ye-Rong Zhang and Hua-Mei Zhang
"Approach for through-wall detection under unknown wall characteristics", J. Appl. Remote Sens. 10(3), 035016 (Aug 15, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.035016


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