Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band

doi:10.1088/1674-1056/ac474b

中国物理B ›› 2022, Vol. 31 ›› Issue (6): 68703-068703.doi: 10.1088/1674-1056/ac474b

Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band

Shuang Pang(逄爽), Yang Zeng(曾旸)^†, Qi Yang(杨琪), Bin Deng(邓彬), and Hong-Qiang Wang(王宏强)

College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China

收稿日期:2021-10-26 修回日期:2021-12-17 接受日期:2021-12-31 出版日期:2022-05-17 发布日期:2022-05-31
通讯作者: Yang Zeng E-mail:zengyang@nudt.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61871386, 61971427, 62035014, and 61921001) and the Natural Science Fund for Distinguished Young Scholars of Hunan Province, China (Grant No. 2019JJ20022).

Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band

Shuang Pang(逄爽), Yang Zeng(曾旸)^†, Qi Yang(杨琪), Bin Deng(邓彬), and Hong-Qiang Wang(王宏强)

College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China

Received:2021-10-26 Revised:2021-12-17 Accepted:2021-12-31 Online:2022-05-17 Published:2022-05-31
Contact: Yang Zeng E-mail:zengyang@nudt.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61871386, 61971427, 62035014, and 61921001) and the Natural Science Fund for Distinguished Young Scholars of Hunan Province, China (Grant No. 2019JJ20022).

摘要/Abstract

摘要： In the terahertz band, the dispersive characteristic of dielectric material is one of the major problems in the scaled radar cross section (RCS) measurement, which is inconsistent with the electrodynamics similitude deducted according to the Maxwell's equations. Based on the high-frequency estimation method of physical optics (PO), a scaled RCS measurement method for lossy objects is proposed through dynamically matching the reflection coefficients according to the distribution of the object facets. Simulations of the model of SLICY are conducted, and the inversed RCS of the lossy prototype is obtained using the proposed method. Comparing the inversed RCS with the calculated results, the validity of the proposed method is demonstrated. The proposed method provides an effective solution to the scaled RCS measurement for lossy objects in the THz band.

关键词: scaled measurement method, radar cross section, lossy targets, terahertz

Abstract: In the terahertz band, the dispersive characteristic of dielectric material is one of the major problems in the scaled radar cross section (RCS) measurement, which is inconsistent with the electrodynamics similitude deducted according to the Maxwell's equations. Based on the high-frequency estimation method of physical optics (PO), a scaled RCS measurement method for lossy objects is proposed through dynamically matching the reflection coefficients according to the distribution of the object facets. Simulations of the model of SLICY are conducted, and the inversed RCS of the lossy prototype is obtained using the proposed method. Comparing the inversed RCS with the calculated results, the validity of the proposed method is demonstrated. The proposed method provides an effective solution to the scaled RCS measurement for lossy objects in the THz band.

Key words: scaled measurement method, radar cross section, lossy targets, terahertz

中图分类号:

87.50.U-

84.40.Xb (Telemetry: remote control, remote sensing; radar) 94.30.Tz (Electromagnetic wave propagation)

Shuang Pang(逄爽), Yang Zeng(曾旸), Qi Yang(杨琪), Bin Deng(邓彬), and Hong-Qiang Wang(王宏强). Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band[J]. 中国物理B, 2022, 31(6): 68703-068703.

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Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band

Scaled radar cross section measurement method for lossy targets via dynamically matching reflection coefficients in THz band

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