Radar Target Complex High-Resolution Range Profile Modulation by External Time Coding Metasurface

In this article, we propose a method based on time coding metasurface (TCM) to modulate the characteristics of radar targets in complex high-resolution range profiles (HRRPs). Unlike the existing works where metasurfaces are typically attached to target surfaces, in our work, the metasurface and con...

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Published inIEEE transactions on microwave theory and techniques Vol. 72; no. 10; pp. 6083 - 6093
Main Authors Yu, Shijian, Guan, Dongfang, Gu, Ziyang, Guo, Jinxing, Liu, Zhen, Liu, Yongxiang
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Coding
Complex high-resolution range profile (HRRP)
Electronic countermeasures
electronic countermeasures (ECM)
Encoding
High resolution
High-resolution imaging
Image enhancement
Metasurfaces
Modulation
Radar imaging
Radar scattering
radar target characteristic modulation
Radar targets
Scattering
scattering enhancement and weakening
Target recognition
time coding metasurface (TCM)
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Abstract In this article, we propose a method based on time coding metasurface (TCM) to modulate the characteristics of radar targets in complex high-resolution range profiles (HRRPs). Unlike the existing works where metasurfaces are typically attached to target surfaces, in our work, the metasurface and controlled target are separable, making modulation more flexible. The proposed method involves controlling the equivalent scattering phase of distance offset false targets within the HRRP, which are generated through TCM by adjusting the modulation parameters. The scattering characteristics of the false target and the controlled target are combined within the same distance unit to create a superimposed scattering feature vector. By taking into account the influence of interference effect, we are able to modulate the scattering characteristics of radar targets within the complex HRRP. The proposed method was validated through theoretical analysis, simulation experiments, and actual experiments conducted in various scenarios. The experimental results demonstrate that the false targets generated by the external TCM can be used to enhance or weaken the scattering intensity of the original target in HRRP, thereby changing the overall image characteristics and posing challenges to target recognition. This method can achieve the modulation of radar target image characteristics under noncoverage conditions, expanding the application scenarios of metasurfaces in the field of radar electronic countermeasures (ECM).
AbstractList In this article, we propose a method based on time coding metasurface (TCM) to modulate the characteristics of radar targets in complex high-resolution range profiles (HRRPs). Unlike the existing works where metasurfaces are typically attached to target surfaces, in our work, the metasurface and controlled target are separable, making modulation more flexible. The proposed method involves controlling the equivalent scattering phase of distance offset false targets within the HRRP, which are generated through TCM by adjusting the modulation parameters. The scattering characteristics of the false target and the controlled target are combined within the same distance unit to create a superimposed scattering feature vector. By taking into account the influence of interference effect, we are able to modulate the scattering characteristics of radar targets within the complex HRRP. The proposed method was validated through theoretical analysis, simulation experiments, and actual experiments conducted in various scenarios. The experimental results demonstrate that the false targets generated by the external TCM can be used to enhance or weaken the scattering intensity of the original target in HRRP, thereby changing the overall image characteristics and posing challenges to target recognition. This method can achieve the modulation of radar target image characteristics under noncoverage conditions, expanding the application scenarios of metasurfaces in the field of radar electronic countermeasures (ECM).
Author Yu, Shijian
Liu, Yongxiang
Liu, Zhen
Guan, Dongfang
Gu, Ziyang
Guo, Jinxing
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Snippet In this article, we propose a method based on time coding metasurface (TCM) to modulate the characteristics of radar targets in complex high-resolution range...
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SubjectTerms Coding
Complex high-resolution range profile (HRRP)
Electronic countermeasures
electronic countermeasures (ECM)
Encoding
High resolution
High-resolution imaging
Image enhancement
Metasurfaces
Modulation
Radar imaging
Radar scattering
radar target characteristic modulation
Radar targets
Scattering
scattering enhancement and weakening
Target recognition
time coding metasurface (TCM)
Title Radar Target Complex High-Resolution Range Profile Modulation by External Time Coding Metasurface
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