High-frequency backscattering properties of quasi-omnidirectional corner reflector: The great-icosahedral-like reflector

Wu, Lingang; Jiang-hu, XU; Hu, Shengliang; Liu, Zhong

doi:10.1063/5.0123981

Cited by 5 publications

(4 citation statements)

References 28 publications

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“…However, electromagnetic wave is regarded as ray in GO method, hence the polarization effect of wave is ignored. In a previous research [21], we proposed a full-polarized RCS estimation method improved from GO, which is applicable to various complex corner reflectors, but the calculation process of this method is intricacy. For the specific OR structure, this paper modifies the response calculation of single reflection and double reflection to achieve a simple and fast full-polarized RCS estimation.…”

Section: Fast Methods Of Rcs Estimation For Ormentioning

confidence: 99%

“…As a premise, according to the relationship of polarization direction with the incident wave, parallel is defined as co‐polarization and orthogonal is defined as cross‐polarization. From the research [21] we have found that, in the case of single or triple reflection, the backscattering is completely co‐polarized. However, in the case of double reflection, it is possible that both co‐polarized response and cross‐polarized response would occur in backscattering, depending on the concrete aspect angles.…”

Section: Dynamic Sequential Rcs Calculation For Acr Arraymentioning

confidence: 99%

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Dynamic sequential radar cross section properties of airborne corner reflector in array

Jiang-hu

et al. 2023

IET Radar Sonar & Navi

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With the spread of airborne corner reflector (ACR) in the field of shipborne equipment, radar guided anti‐ship missile is facing new challenges. In order to achieve the mastery of the jamming principle of this apparatus, the paper studied its motion properties and sequential Radar Cross Section (RCS) properties. Firstly, the motion model of the ACR was obtained under certain constraints, by deriving the centroid dynamics equation and rotation dynamics equation according to the theoretical mechanics. Then, the dynamic sequential RCS model of ACR array was established by combining the motion model with the modified geometric optics method and coherent synthesis method. Through the simulation and analysis of the motion model, it was found that the flight process of the ACR can be divided into two stages: fast falling and steady falling. In the fast falling stage, the variables of the ACR system change rapidly, while the ACR rotates slowly and falls smoothly in the steady falling stage. From simulation of dynamic sequential RCS model, the results showed that the obvious depolarisation effect is occur in the fast falling stage. Further statistical analysis showed that, the omnidirectivity of single ACR is well from the dynamic perspective, meanwhile array placement can effectively enhance RCS amplitude and improve the probability density distribution.

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Section: Fast Methods Of Rcs Estimation For Ormentioning

confidence: 99%

Section: Dynamic Sequential Rcs Calculation For Acr Arraymentioning

confidence: 99%

Dynamic sequential radar cross section properties of airborne corner reflector in array

Jiang-hu

et al. 2023

IET Radar Sonar & Navi

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“…This requirement has been already investigated in many other radar studies. As a matter of fact, different structures able to backscatter the radar signal in many directions both in azimuth and in elevation have been produced and/or only simulated [14][15][16] . In the present study, three types of artificial reflectors (AR) with an effective target detectability in many directions have been investigated (Figure 4 RCS performances of the selected passive radar reflectors have been simulated considering different azimuth (φ) angles of incidence radar waves.…”

Section: Investigated Passive Radar Reflectors and Rcs Simulationsmentioning

confidence: 99%

Investigating radar cross sections of passive radar reflectors for C-band and X-band SAR satellite missions

Parisi,

Nitti,

Nutricato

et al. 2023

Microwave Remote Sensing: Data Processing and Applications II

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The lack of stable and coherent natural targets can threat the effectiveness of Interferometric Synthetic Aperture Radar (InSAR) applications. To overcome this issue, active and passive radar reflectors are designed. Thanks to their low cost of construction and maintenance, passive radar reflectors are even more employed as coherent targets to assess potential displacement measurements of land, buildings, and infrastructures. In the present study, different types of passive radar reflectors are investigated by simulating their backscattering characteristics through a 3D electromagnetic software and by calculating their radar cross sections at different azimuth and incidence angles. Simulation results have been examined by considering the characteristics of current SAR satellite missions orbiting on different planes (Sun-Synchronous Orbit/Mid-Inclination Orbit) and considering both passes (Ascending/Descending), as well as by analyzing different orientations of SAR antenna (i.e., Right/Left look sides and incidence angles). Advantages and disadvantages of the investigated passive radar reflectors are highlighted in terms of their visibility on multiple Line Of Sights (LOS). Two carrier frequencies have been selected, that are close to those of operational SAR satellites: 5.405 GHz (C-band) and 9.66 GHz (X-band).

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“…In addition, corner reflector exhibits a number of advantageous properties with regard to scattering characteristics, spectral characteristics, polarization properties, and resistance to the technique of coherent accumulation. In recent years, the continuous advancement of structure and surface reflection materials has led to significant improvements in the performance metrics of corner reflectors, including coverage frequency bands, omnidirectionality, and the cost−effectiveness ratio of interference [2]. Consequently, many countries have devoted greater attention to the development of corner reflectors and deployed them in a variety of scenarios where they are used to counter the radar detection.…”

Section: Introductionmentioning

confidence: 99%

An Identification Method of Corner Reflector Array Based on Mismatched Filter through Changing the Frequency Modulation Slope

Xia,

Wang,

Pang

et al. 2024

Remote Sensing

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The corner reflector is an effective means of interference for radar seekers due to its high jamming intensity, wide frequency band, and combat effectiveness ratio. Properly arranging multiple corner reflectors in an array can form dilution jamming that resembles ships, substantially enhancing the interference effect. This results in a significant decline in the precision attack efficiency of radar seekers. Hence, it is critical to accurately identify corner reflector array. The common recognition methods involve extracting features on the high-resolution range profile (HRRP) and polarization domain. However, the former is constrained by the number of corner reflectors, while the latter is affected by the accuracy of polarization measurement, both of which have limited performance on the identification of corner reflector array. In terms of the evident variations in physical structures, there must be differences in their scattering characteristics. To highlight the differences, this paper proposes a new method based on the concept of mismatched filtering, which involves changing the frequency modulation slope of the chirp signal in the filter. Then, the variance of width and intervals within a specific scope are extracted as features to characterize these differences, and an identification process is designed in combination with the support vector machine. The simulation experiments demonstrate that the proposed method exhibits stable discriminative performance and can effectively combat dilution jamming. Its accuracy rate exceeds 0.86 when the signal-to-noise ratio is greater than 0 dB. Compared to the HRRP methods, the recognition accuracy of the proposed algorithm improves 15% in relation to variations in the quantity of corner reflectors.

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High-frequency backscattering properties of quasi-omnidirectional corner reflector: The great-icosahedral-like reflector

Cited by 5 publications

References 28 publications

Dynamic sequential radar cross section properties of airborne corner reflector in array

Dynamic sequential radar cross section properties of airborne corner reflector in array

Investigating radar cross sections of passive radar reflectors for C-band and X-band SAR satellite missions

An Identification Method of Corner Reflector Array Based on Mismatched Filter through Changing the Frequency Modulation Slope

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