Time-Domain Scattering Characteristics and Jamming Effectiveness in Corner Reflectors

Luo, Ying; Guo, Lixin; Zuo, Yanchun; Liu, Wei

doi:10.1109/access.2021.3053116

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…This property results in the corner reflector exhibiting a pronounced backward radar cross−section and the generation of a robust jamming signal [3]. Proper assignment of multiple corner reflectors can simulate false targets similar to ships, which will substantially enhance the interference effect [4][5][6]. Consequently, the array of corner reflectors has attracted greater interest [7,8].…”

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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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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show abstract

“…This theory was employed to establish the statistical model of Radar Cross Section (RCS) of the OR array, and this work found that the OR array has better omnidirectivity than single OR. Luo simulated the RCS of ORs with different geometric features through the Shooting and Bouncing Ray (SBR) [8] method, and the regular of its RCS versus angles and radius was summarised. Nevertheless, the above achievements are all based on the static condition, and there is still no research or report with regard to the dynamic properties of ACR.…”

Section: Introductionmentioning

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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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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“…Passive jamming uses angular reflectors and other devices to change the scattering mode of electromagnetic waves, demonstrating the qualities of cost-effectiveness and rapid response [10,11]. However, traditional passive devices possess a singular and fixed electromagnetic property after undergoing processing.…”

Section: Introductionmentioning

confidence: 99%

Phased Array Radar Resource Consumption Method Based on Phase-Switched Screen

Hao,

Feng,

Wang

et al. 2023

Electronics

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The consumption of phased array radar (PAR) resources affects the accuracy of its multi-target searching and tracking abilities. The jamming methods aimed at PAR involve deceptive jamming and comprehensive jamming strategies, but have the disadvantages of high cost and complexity. Given this context, this paper proposes a PAR resource consumption method based on phase-switched screen (PSS), and derives a relationship between the targets and the evaluation indicators. By implementing periodic modulation of PSS, a controlled number of deceptive multiple false targets can be generated, thereby enticing the radar system to engage in activities such as searching and tracking targets. When the quantity of false targets is increased, the number of beam requests becomes five times higher than compared to the scenario without false targets. This has also led the margin of time resources to exceed 50%, successfully achieving the objective of consuming radar resources. Furthermore, this method offers straightforward manipulation, flexibility, and the potential to significantly consume radar resources. The efficacy of the proposed method is confirmed with the simulation outcomes.

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Time-Domain Scattering Characteristics and Jamming Effectiveness in Corner Reflectors

Cited by 14 publications

References 4 publications

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

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

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

Phased Array Radar Resource Consumption Method Based on Phase-Switched Screen

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