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

作　　者：郑舒予 张小宽[1] 刘铭[2] 徐嘉华 赵唯辰 ZHENG Shuyu;ZHANG Xiaokuan;LIU Ming;XU Jiahua;ZHAO Weichen(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China;Equipment Managenent and UAV Engineering College,Air Force Engineering University,Xi’an 710051,China;Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[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

出　　处：《空军工程大学学报（自然科学版）》2019年第6期79-83,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金(61372033)

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。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.

关 键 词：散射中心 参数提取 FEKO RCS频率全角度外推 

分 类 号：TN957[电子电信—信号与信息处理]