[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 基于一维散射中心模型的RCS频率全角度外推-RCS Frequency Full Angle Extrapolation Based on One dimensional Scattering Center Model
文章摘要
郑舒予1,张小宽1,刘铭2,徐嘉华1,赵唯辰3.基于一维散射中心模型的RCS频率全角度外推[J].空军工程大学学报:自然科学版,2019,20(6):79-83
基于一维散射中心模型的RCS频率全角度外推
RCS Frequency Full Angle Extrapolation Based on One dimensional Scattering Center Model
  
DOI:
中文关键词: 散射中心  参数提取  FEKO  RCS频率全角度外推
英文关键词: scattering centers  parameter extraction  FEKO  RCS frequency full angle extrapolation
基金项目:国家自然科学基金(61372033)
作者单位
郑舒予1,张小宽1,刘铭2,徐嘉华1,赵唯辰3 1.空军工程大学防空反导学院西安710051
2.空军工程大学装备管理与无人机工程学院西安710051
 3.长春理工大学长春130022 
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中文摘要:
      目标RCS频率外推是减小目标RCS数据存储的有效手段之一。利用FEKO电磁仿真软件得到目标回波数据,结合经典谱估计算法,提出了一种基于GTD散射中心模型的目标RCS频率全角度外推方法。以弹头目标为例,首先利用1~2 GHz频率后向电磁散射数据,提取GTD散射中心模型参数;其次利用RCS频率全角度外推方法,实现了弹头目标在3 GHz、4 GHz频率上的RCS全角度外推;最后通过将外推数据与FEKO仿真数据进行对比,验证了外推方法的准确性与可靠性。仿真实验表明,外推结果与FEKO的仿真结果在整体趋势及强散射点对应的位置上具有较高的吻合度,可有效描述雷达目标的散射特性。
英文摘要:
      Target RCS fitting extrapolation is one of the effective means to save storage space of target RCS database. In this paper, based on the target echo data obtained by FEKO and the classical spectral estimation algorithm, a frequency full angle extrapolation of RCS of a typical missile warhead target is performed. First, based on the simulation data of 1~2 GHz, the parameters of the GTD (geometric theory of diffraction) scattering center model is extracted. Secondly, the RCS of the warhead target at 3 GHz and 4 GHz is extrapolated by using the proposed method. Finally, the extrapolated data are compared with the data obtained by FEKO, and the accuracy and the reliability of the extrapolation method proposed are verified. The simulation results show that the extrapolation results and the simulation results of FEKO are a highly similarity on the overall trend and at the strong scattering points, which can also be used to effectively describe the scattering characteristics of radar targets. The proposed method provides a theoretical support for RCS frequency full angle extrapolation and has a wide application in military.
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