Rapid prediction and verification of radar cross section for weak-scattering slots in aircraft skin design

Li Jiayang; Dang Peng; Feng Xiaoshuang; Yang Lanqing; Tian Lin

doi:10.11884/HPLPB202638.250283

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Article Navigation > High Power Laser and Particle Beams > 2026 > Accepted Manuscript

Li Jiayang, Dang Peng, Feng Xiaoshuang, et al. Rapid prediction and verification of radar cross section for weak-scattering slots in aircraft skin design[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250283

Citation:

Li Jiayang, Dang Peng, Feng Xiaoshuang, et al. Rapid prediction and verification of radar cross section for weak-scattering slots in aircraft skin design[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250283

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Rapid prediction and verification of radar cross section for weak-scattering slots in aircraft skin design

doi: 10.11884/HPLPB202638.250283

China Chengdu Tianao Technology Development Co, Ltd, Chengdu 610036, China

Received Date: 2025-09-05
Accepted Date: 2025-11-08
Rev Recd Date: 2025-11-25

Available Online: 2025-12-02

Abstract

Abstract

Background
Slots are critical weak scattering sources in stealth aircraft design, significantly influencing Radar Cross Section (RCS). Existing simulation and measurement models often fail to capture true weak scattering behavior, as it is difficult to isolate slot scattering from the low-RCS background.
Purpose
This study aims to accurately quantify the RCS contribution of weak slots by separating their scattering effect from the background structure, establish relationships between slot dimensions and RCS, and develop a fast estimation method for various slot configurations.
Methods
Using the electric field vector superposition principle, a cancellation technique was applied to extract slot scattering from the background. A fast multi-target scatterer accumulation method was developed to predict scattering from single straight slots, arrays, and bent slots. Simulations and experiments were conducted for validation.
Results
The cancellation technique effectively isolated slot scattering, revealing clear RCS-dimension correlations. The fast estimation method agreed well with detailed simulations and experimental measurements across different slot types.
Conclusions
The proposed approach offers an effective tool for designing and optimizing aircraft structures such as skin joints and apertures. It enables efficient RCS evaluation of weak scattering sources, enhancing stealth performance assessment capability.
- slots,
- electromagnetic scattering,
- weak scattering source,
- vector accumulation,
- fast estimation method

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References(17)

References

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