A Review of Metasurface-Assisted RCS Reduction Techniques

Murugesan, Akila; Selvan, Krishnasamy T.; Iyer, Ashwin K.; Srivastava, Kumar Vaibhav; Alphones, A.

doi:10.2528/pierb21081401

Cited by 17 publications

(5 citation statements)

References 123 publications

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“…A plane wave illuminates the model along the −z-direction, with the electric field polarized in the +y-direction. The working frequency band is [2,18] GHz. Figures 5 and 6 exhibit the monostatic RCS and bistatic RCS of the honeycomb model and the equivalent model.…”

Section: Verification Of the Retrieval Methodsmentioning

confidence: 99%

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An efficient parameter-retrieval-based surrogate-assisted optimization of on-platform honeycomb absorbing structures

Yang,

Yu,

Cui

2024

J. Phys. D: Appl. Phys.

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An electromagnetic (EM) parameter-retrieval-based surrogate-assisted optimization (PSAO) algorithm is presented to reduce radar cross section (RCS) by optimizing the on-platform honeycomb absorbing structures. To facilitate the optimization process, the honeycomb structure is transformed to an anisotropic homogeneous slab, and the effective parameters of the slab are extracted by the retrieval algorithm. A multi-fidelity model is employed to reduce the computing-time consumption, in which a Gaussian process (GP) regression model is used as the substitute for the coarse model. The GP model establishes a relationship between the geometry of the honeycomb structure and the RCS response of the target coated with the equivalent slab. Finally, the optimization result of the fine model is achievedthrough a space mapping strategy. The accuracy of the parameter extraction algorithm is verified by analyzing the honeycomb absorbing structure. Subsequently, the proposed optimization method is applied to a metal plate and a metal cylinder, resulting in a 10dB reduction of RCS in broadband and wide-angle scenarios. This demonstrates the applicability of the proposed PSAO algorithm to both planar and conformal on-platform honeycomb absorbing structures. Furthermore, an NACA0015 oil is analyzed, showing an average RCS reduction of 10 dB and a minimum RCS reduction of 5dB in the X-band. These results indicate that the PSAO approach can effectively apply tocomplicated targets. Additionally, the proposed method exhibits significant advantages in terms of computational accuracy and efficiency compared to the traditional genetic algorithm.

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Section: Verification Of the Retrieval Methodsmentioning

confidence: 99%

“…In the past few years, radar cross section (RCS) reduction has become a highly researched topic in various fields, including civilian, industrial, and military stealth applications [1,2]. Two primary methods are employed to reduce RCS: with scatters and with absorbers.…”

Section: Introductionmentioning

confidence: 99%

An efficient parameter-retrieval-based surrogate-assisted optimization of on-platform honeycomb absorbing structures

Yang,

Yu,

Cui

2024

J. Phys. D: Appl. Phys.

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“…Metasurfaces can provide a reduction to the RCS through mechanisms similar to the ones commented on above: by scattering, when the spread of energy throughout different directions, polarizations, and frequencies avoids the radar to detect them, or by absorption. A comprehensive review on RCS reduction with metasurfaces is presented in [ 47 ].…”

Section: Methodsmentioning

confidence: 99%

Metasurfaces and Blinking Jamming: Convergent Study, Comparative Analysis, and Challenges

Mello

2023

Micromachines

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Blinking jamming is an active self-screening technique performed by at least two aircraft to tackle monopulse radars and all complexity related thereto. Nowadays, the technique can be performed with digital radiofrequency memories (DRFMs), which are cumbersome, complex, expensive, need a dedicated compartment and antenna, and introduce spurs in the signals. In this paper, we propose an alternative to the implementation of blinking jamming with DRFMs, namely with reconfigurable metasurfaces. By covering the aircraft parts that most contribute to the radar cross-section (RCS), reconfigurable metasurfaces can interchangeably absorb or amplify impinging waves, making the aircraft ‘blink’ from the radar perspective. To validate the feasibility, simulations accounting for realistic phenomena are conducted. It is seen that, if the aircraft RCS can be varied in a ratio of 10:1, either with absorptive or power-amplifying metasurfaces, a performance similar to that of the DRFM is achieved. Furthermore, a ratio of 2:1 is sufficient to make the radar antenna system movements exceed the angular range of the formation. We also anticipate our work to be a starting point for completely new ways of countering radars, e.g., with countless small drones performing passive or active stand-off blinking jamming.

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“…Probes with low RCS become the most concerning designs to improve the testing performance through suppressing multiple reflections between probes. Traditional methods for reducing RCS can be divided into two types including scattering and absorbing [76], the former includes shaping and metasurfaces, and the latter includes radar absorbing materials and absorptive metasurfaces. However, the performance of probes will be harmed if the above methods are adopted directly to the designing process.…”

Section: Traditional Probementioning

confidence: 99%

A Review of Over-the-Air Testing Methods for Performance Measurement of Antennas and Devices in Communication Systems

Duan,

Wang,

Tang

et al. 2024

International Journal of RF and Microwave Computer-Aided Engine

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With the fast development of communication techniques, over-the-air testing has developed into the main testing method for current communication systems due to its advantages including no cable connection, high measurement efficiency, and independence from environment. OTA testing has become almost the only solution for 5G system testing especially after the popularity of 5G massive multiple-input-multiple-output. In this paper, we summarize the three main methods of OTA testing including the reverberation chamber-based method, the radiation two-step method, and the multiprobe anechoic chamber- (MPAC-) based method, among which we focus on the MPAC method systematically. In the MPAC method, there are two main channel synthesis techniques that have been heavily studied, namely, prefaded signal synthesis and plane wave synthesis. We summarize the current main research based on these two techniques including probe configurations, probe selection algorithms, and probe design based on the PFS technique and the design of plane wave generators based on PWS technique. The main comparisons are made for the performance of different probe selection algorithms and the performance of different plane wave generators as well as the latest advances.

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A Review of Metasurface-Assisted RCS Reduction Techniques

Cited by 17 publications

References 123 publications

An efficient parameter-retrieval-based surrogate-assisted optimization of on-platform honeycomb absorbing structures

An efficient parameter-retrieval-based surrogate-assisted optimization of on-platform honeycomb absorbing structures

Metasurfaces and Blinking Jamming: Convergent Study, Comparative Analysis, and Challenges

A Review of Over-the-Air Testing Methods for Performance Measurement of Antennas and Devices in Communication Systems

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