Scattering Characteristic Extraction and Recovery for Multiple Targets Based on Time Frequency Analysis

Authors

  • Xiangwei Liu School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China
  • Jianzhou Li School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China
  • Yi Zhu School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China l
  • Shengjun Zhang National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematical Beijing, 100076, China

Keywords:

Extraction and recovery, radar detection, scattering characteristic, time-frequency analysis

Abstract

The multi-target scattering field consists of the scattering fields of each target, but it is difficult to know the scattering characteristics of the specific target from the total scattering field. However, the scattering characteristics of single target embedded in the total scattered field have important research significance for target recognition and detection. In this paper, a method is proposed to extract and recover each target’s scattering characteristics from the total scattering field of multiple targets. The theoretical basis of the method is that the scattering echoes corresponding to different targets reach the receiver at different time. We acquire the total scattering field at first. Then, we perform the signal processing with time-frequency analysis to obtain the arrival time of different scattering echoes. According to the time slot difference, the time domain signal of each target can be extracted to recover its scattering field. Several examples validate the proposed method.

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Author Biographies

Xiangwei Liu, School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China

Xiang-Wei Liu is currently pursuing Master in Electromagnetic Fields and Microwave at Northwestern Polytechnical University. His current research direction is target electromagnetic scattering decomposition, target scattering characteristics evaluation and complex target modeling.

Jianzhou Li, School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China

Jian-Zhou Li is an Associate Professor in Northwestern Polytechnical University. He received the Ph.D. degree in 2005 in Northwestern Polytechnical University. He was a postdoctoral researcher at University of Surrey during 2008- 2009. His research interests focus on electromagnetic modeling and simulation.

Yi Zhu, School of Electronics and Information Northwestern Polytechnical University, Xi’an, 710129, China l

Yi Zhu is currently pursuing Master in Electromagnetic Fields and Microwave at Northwestern Polytechnical University. His current research direction is electromagnetic calculation of dielectric coating target and complex target modeling.

Shengjun Zhang, National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematical Beijing, 100076, China

Sheng-Jun Zhang is a Researcher in National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematical, and his research direction is target feature control technology.

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Published

2020-08-01

How to Cite

[1]
Xiangwei Liu, Jianzhou Li, Yi Zhu, and Shengjun Zhang, “Scattering Characteristic Extraction and Recovery for Multiple Targets Based on Time Frequency Analysis”, ACES Journal, vol. 35, no. 8, pp. 962–970, Aug. 2020.

Issue

2020: Vol 35 Iss 8

Section

Articles