Scattering Studies for Two-Dimensional Exponential Correlation Textured Rough Surfaces Using Small-Slope Approximation Method

The existing technologies to reduce radar cross sections (RCSs) face numerous challenges in bandwidth expansion, and hence they have a long way to achieve full-band stealth. Additionally, the control mechanism of RCS reduction level is deficient. Here, we explore the root of problem to cause the bandwidth blind zones and propose a mathematical model to establish a mapping relation between the array factor (AF) in spatial domain and the RCS reduction in frequency domain. The mathematical model of full-band stealth for general oblique incidence is also constructed, which guides to design a diffuse artificial meta-structure (AMS) to validate the proposed model. Then we build a mathematical model based on the Chebyshev polynomial for RCS reductions with RdB equal-amplitude in controlling the scattering fields. As proof of principle, a diffuse AMS is designed, fabricated, and measured to reach the RCS reductions with preseted 21 dB equal-amplitude. The simulated and measured results are in good agreement, proving that the proposed theoretical models provide a cornerstone of the future advanced stealth technologies.

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Scattering Studies for Two-Dimensional Exponential Correlation Textured Rough Surfaces Using Small-Slope Approximation Method

Cited by 4 publications

References 26 publications

Numerical calculation of light scattering from metal and dielectric randomly rough Gaussian surfaces using microfacet slope probability density function based method

Numerical calculation of light scattering from metal and dielectric randomly rough Gaussian surfaces using microfacet slope probability density function based method

Research on the Microwave Scattering from Bare Land Based on IEM

Full-band Electromagnetic Stealth

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