| 摘要: |
| 针对无人机具有内部金属结构和薄介质外壳的特点，基于薄介质层金属表面积分方程的矩量法，仿真分析了ABS塑料、木材和玻璃钢三种典型介质材料作为机体外壳的无人机散射特性。基于其单站RCS仿真结果和典型入射方向的等效机体面电流分布情况，确定了强散射区。通过对强散射区涂覆雷达吸波材料，有效地降低了机体面电流分布。相比于全身雷达吸波材料涂覆，所提方法在实现良好的RCS减缩效果的同时，减少了涂覆成本，研究结果对无人机的隐身设计具有参考意义。 |
| 关键词: 无人机 强散射区 RCS减缩 雷达吸波材料 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.01.016 |
| 分类号:TN011；TN957 |
| 基金项目: |
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| Strong Scattering Region of Unmanned Aerial Vehicle with Metal and Dielectric Medium |
|
YU Jiaao，PENG Shirui，WANG Guangxue，WANG Xiaoyan
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|
Air Force Early Warning Academy，Wuhan 430019，China
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| Abstract: |
| According to the feature of UAV with metal structure and thin dielectric shell，based on the moment method of integral equation with thin dielectric and metal，the scattering characteristics of UAV with three typical dielectric coatings，such as ABS plastic，wood and FRP，are simulated respectively. The strong scattering region is determined by monostatic RCS and the equivalent surface current distribution under typical incident direction. The surface current distribution can be effectively reduced by coating the radar absorbing material on the strong scattering region. Compared to coating the radar absorbing material on the whole UAV，the proposed method achieves a good RCS reduction and cut the cost of absorber. The research results have reference significance for the stealth design of the UAV. |
| Key words: Strong Scattering Region of Unmanned Aerial Vehicle with Metal and Dielectric Medium |
