Parametric Scattering Center Modeling for a Conducting Deep Cavity

Guang Liang Xiao; Kun Yi Guo; Xin Qing Sheng

doi:10.1109/LAWP.2021.3085008

Parametric Scattering Center Modeling for a Conducting Deep Cavity

Guang Liang Xiao, Kun Yi Guo^*, Xin Qing Sheng

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A conducting deep cavity is an essentially geometric structure, e.g., the inlet duct and the tail nozzle, of air vehicles and is a dominant scattering source of radar echoes. The scattering centers (SCs) induced by multiple reflections inside deep cavities are different from general SCs. Few references have studied the SC model for deep cavities. Therefore, a concise SC model is presented in this letter. In this model, an analytical expression for the projection distances of SCs along the line-of-sight (LOS) in deep cavities is derived by using the ray- tracing method. Rectangular cavities, cylindrical cavities, and a cavity composed of two cylindrical structures are investigated in this letter. The presented SC models are validated by a comparison between the radar images simulated by the model and those computed by a full-wave numerical method.

Original language	English
Article number	9444632
Pages (from-to)	1419-1423
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	20
Issue number	8
DOIs	https://doi.org/10.1109/LAWP.2021.3085008
Publication status	Published - Aug 2021

Keywords

Deep cavity
Full-wave numerical method
Multiple reflection
Scattering center (SC)

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10.1109/LAWP.2021.3085008

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title = "Parametric Scattering Center Modeling for a Conducting Deep Cavity",

abstract = "A conducting deep cavity is an essentially geometric structure, e.g., the inlet duct and the tail nozzle, of air vehicles and is a dominant scattering source of radar echoes. The scattering centers (SCs) induced by multiple reflections inside deep cavities are different from general SCs. Few references have studied the SC model for deep cavities. Therefore, a concise SC model is presented in this letter. In this model, an analytical expression for the projection distances of SCs along the line-of-sight (LOS) in deep cavities is derived by using the ray- tracing method. Rectangular cavities, cylindrical cavities, and a cavity composed of two cylindrical structures are investigated in this letter. The presented SC models are validated by a comparison between the radar images simulated by the model and those computed by a full-wave numerical method.",

keywords = "Deep cavity, Full-wave numerical method, Multiple reflection, Scattering center (SC)",

author = "Xiao, {Guang Liang} and Guo, {Kun Yi} and Sheng, {Xin Qing}",

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AU - Xiao, Guang Liang

AU - Guo, Kun Yi

AU - Sheng, Xin Qing

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N2 - A conducting deep cavity is an essentially geometric structure, e.g., the inlet duct and the tail nozzle, of air vehicles and is a dominant scattering source of radar echoes. The scattering centers (SCs) induced by multiple reflections inside deep cavities are different from general SCs. Few references have studied the SC model for deep cavities. Therefore, a concise SC model is presented in this letter. In this model, an analytical expression for the projection distances of SCs along the line-of-sight (LOS) in deep cavities is derived by using the ray- tracing method. Rectangular cavities, cylindrical cavities, and a cavity composed of two cylindrical structures are investigated in this letter. The presented SC models are validated by a comparison between the radar images simulated by the model and those computed by a full-wave numerical method.

AB - A conducting deep cavity is an essentially geometric structure, e.g., the inlet duct and the tail nozzle, of air vehicles and is a dominant scattering source of radar echoes. The scattering centers (SCs) induced by multiple reflections inside deep cavities are different from general SCs. Few references have studied the SC model for deep cavities. Therefore, a concise SC model is presented in this letter. In this model, an analytical expression for the projection distances of SCs along the line-of-sight (LOS) in deep cavities is derived by using the ray- tracing method. Rectangular cavities, cylindrical cavities, and a cavity composed of two cylindrical structures are investigated in this letter. The presented SC models are validated by a comparison between the radar images simulated by the model and those computed by a full-wave numerical method.

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KW - Multiple reflection

KW - Scattering center (SC)

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Parametric Scattering Center Modeling for a Conducting Deep Cavity

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Keywords

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