| 摘要: |
| 目标雷达散射截面积（Radar Cross Section, RCS）计算在隐身设计、电子对抗、目标探测、识别和成像等方面具有重要的研究价值，是目标电磁散射特性的重点研究方向。针对复杂目标RCS估计问题，基于属性散射中心模型的单一方法在估计大角度范围的目标RCS时会产生较大误差，而物理光学方法需要在每个观察角度对目标表面的面元进行遮挡判别才能准确得到目标RCS，计算量大。因此，本文提出一种联合属性散射中心模型和物理光学的处理方法，在部分观察角度通过物理光学方法分析确定目标的属性参数集，再通过属性散射中心模型分析快速估计任意观察角度、不同频率下的目标RCS，获得在大角度范围的结果更加准确、计算量更小。最后采用FEKO软件仿真验证了所提方法的有效性。 |
| 关键词: 雷达散射截面积 属性散射中心模型 物理光学 目标电磁散射特性 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.02.009 |
| 分类号:TN957 |
| 基金项目: |
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| RCS Estimation Method for Complex Targets Based on Joint Processing |
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SUN Jiaxing， YAO Huijing
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1. Chinese Flight Test Establishment, Xi'an 710089, China;2. AVIC Xi'an Aircraft Industry (Group) Company LTD, Xi'an 710089, China
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| Abstract: |
| Radar cross section (RCS) calculation has important research value in the regions of stealth design, electronic countermeasures, target detection, recognition and imaging, which is the key research direction of target electromagnetic scattering characteristics. For the RCS estimation of complex targets, the attribute scattering center (ASC) model produces large errors in a wide angle, while the physical optics (PO) method needs to perform occlusion discrimination on the surface element of the target surface at each observation angle to accurately obtain the target RCS, which requires a large amount of calculation. Therefore, this paper proposes a joint processing method that combines both advantages of ASC and PO, which analyzes and determines the attribute parameter set of the target through the physical optics method at some observation angles and then quickly estimate the target RCS at any observation angle and different frequencies by ASC model. The proposed method has more accurate results and less calculation compared with traditional ASC and PO. Finally, the FEKO software simulation is used to verify the effectiveness of the proposed method. |
| Key words: radar cross section (RCS) attribute scattering center (ASC) physical optics (PO) target electromagneticscattering characteristics |
