A Bistatic Scattering Evaluation Method of the Chaff Cloud in Airflow Based on VRT

Zuo, Yanchun; Guo, Lixin; Liu, Wei; Liu, Songhua

doi:10.1109/tap.2021.3090813

Cited by 10 publications

(10 citation statements)

References 68 publications

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“…Therefore, looking for an upper bound, the classic QR factorization with Householder reflections for dense matrices is considered. This involves 4𝑛 3 /3 FLOPs, where 𝑛 here is the number of rows or columns of a square matrix [37], and, in our setting, this number of FLOPs traduces to 4 3 (2𝑁 𝐿 𝑚𝑁 𝐶 ) 3 (84)…”

Section: Discussionmentioning

confidence: 99%

“…The real number of FLOPs will be significantly lower in practice. The computation of this upper bound is reported in the Appendix A, where it can be seen that the dominant term is the one containing 𝑁 𝐶 3 𝑁 𝐿 3 , leading to an asymptotic arithmetic complexity 𝑂(𝑁 𝐶 3 𝑁 𝐿 3 ). However, this is due to the hypothetical adoption of the classic QR factorization for dense matrices, as explained in the Appendix A.…”

Section: F Computational Propertiesmentioning

confidence: 99%

“…HE THEORY of vector radiative transfer (VRT) [1], [2] is a precious tool for a multitude of scientific scopes, such as atmospheric propagation for telecommunication and remote sensing [3]- [14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved Chebyshev Spectral Method Modeling for Vector Radiative Transfer in Atmospheric Propagation

Tavanti,

Caviglia,

Randazzo

2024

IEEE Trans. Antennas Propagat.

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An improved spectral coefficient method based on Chebyshev polynomials of the second kind is employed to solve the vector radiative transfer equation under the assumption of parallel-plane atmosphere and Rayleigh scattering. The solver is extended to consider a Lambertian surface at the bottom of the atmosphere. The computational properties of the proposed algorithm are analyzed and the validity of the implemented method is tested against a publicly available benchmark dataset.

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Section: Discussionmentioning

confidence: 99%

Section: F Computational Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Improved Chebyshev Spectral Method Modeling for Vector Radiative Transfer in Atmospheric Propagation

Tavanti,

Caviglia,

Randazzo

2024

IEEE Trans. Antennas Propagat.

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“…This lightweight and efficient passive jamming material has the capability to influence radar echo signals. However, this material possesses certain limitations, such as being recognized easily by new radar systems and requiring a high interference spatial location [1].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Anisotropic Passive Jamming Clouds in Bistatic Scattering by the Physical Optics Method

Gong,

Cai,

Rao

et al. 2024

Preprint

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In this paper, an efficient method for analyzing the electromagnetic(EM) scattering behavior of the anisotropic passive jamming clouds in bistatic radar. The electromagnetic scattering characteristics of the anisotropic passive jamming clouds are described in tensor permittivity, which can increase the difficulty of calculation, and both reflection and transmission coefficients are included in the efficient calculation of radar cross section (RCS). Therefore, the relationship between electric and magnetic fields in anisotropic media is obtained by substituting the tensor permittivity into Maxwell's equation. Meanwhile, combining the electromagnetic field expressions and boundary conditions in different regions, the reflection coefficient matrix and the transmission coefficient matrix can be presented. Furthermore, the bistatic RCS of anisotropic passive jamming clouds can be calculated efficiently by the physical optics (PO) method. Moreover, the reflection and transmission coefficients are substituted into Maxwell's equations for the electromagnetic field in space, and the bistatic RCS of anisotropic passive jamming clouds can be solved. In order to verify the accuracy and efficiency of the proposed algorithm in this paper, the results of the proposed method are compared with the finite element method (FEM) in detail. The results fully prove the excellent performance of this algorithm. Hence, the reflection coefficient and the transmission coefficient combined with the PO method are suitable for analyzing the EM scatting characteristics of anisotropic passive jamming clouds.

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“…Direct numerical simulation of compressible turbulence in counter flow channel configuration, in which two streams of fluid are brought together from opposite directions is discussed in (5) . Bistatic scattering evaluation method for chaff cloud in airflow is presented in (6) . In (7) , discrete electromagnetic model for the evaluation of Wideband Bistatic Scattering Responses and statistics of chaff cloud is reported.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Turbulence on Dynamic Radar Cross Section of Chaff Clouds

Bajpai¹,

Kaur²,

Kumar³

et al. 2022

IJST

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Objective: This research reports the effect of turbulence on the dynamic Radar Cross Section (RCS) of chaff cloud. In the era of modern warfare technologies, most efficacious electronic countermeasure employed by the armed forces of various major powers is the Chaff. Chaff is based on the expulsion of numerous electrical dipoles of different length to cover the broad spectrum of radar frequency. This mechanism helps in deceiving the enemy missile by producing the required RCS. RCS of chaff cloud is a dynamic entity and rely on several aerodynamic factors. Methodology: Effects of turbulence on dynamic RCS are studied using Ansys Fluent for aerodynamic blooming simulation and Ansys HFSS for simulation of RCS of the bloomed chaff cloud. Findings: The subject of the paper corresponds to the significant effect of turbulence on the expeditious blooming of chaff cloud. The RCS of turbulent flow was higher by 1.5dBsm to 2.5dBsm for 50msec. The turbulence effect has reduced the blooming time of chaff filaments in the range of 25msec -50msec. Novelty: Turbulence plays important role in faster blooming of chaff cloud and achieving minimum threshold RCS required for deception of RF seeker missiles.

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A Bistatic Scattering Evaluation Method of the Chaff Cloud in Airflow Based on VRT

Cited by 10 publications

References 68 publications

Improved Chebyshev Spectral Method Modeling for Vector Radiative Transfer in Atmospheric Propagation

Improved Chebyshev Spectral Method Modeling for Vector Radiative Transfer in Atmospheric Propagation

Analysis of the Anisotropic Passive Jamming Clouds in Bistatic Scattering by the Physical Optics Method

The Effect of Turbulence on Dynamic Radar Cross Section of Chaff Clouds

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