通用特征基函数法结合MBPE计算目标宽带RCS  

Calculation of Wide-band RCS of Objects Using General Characteristic Basis Function Method and Model Based Parameter Estimation

作　　者：王仲根[1] 唐晓菀 聂文艳 WANG Zhong-gen;TANG Xiao-wan;NIE Wen-yan(College of Electrical and hffornlation Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,Chi na;College of Mechanical and Electrical Engineering,Huainan Normal University,Huainan Anhui 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001 [2]淮南师范学院机械与电气工程学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2018年第3期20-23,共4页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(61401003);安徽省高校优秀青年人才支持计划资助项目(gxyq2017060);计算智能与信号处理教育部重点实验室开放基金资助项目(KF201401);安徽理工大学博士启动基金资助项目(CY507)

摘　　要：通用特征基函数法是分析目标宽带电磁散射特性的有效方法之一,但传统通用特征基函数法在计算目标宽带雷达散射截面时,需要在每个频率点重新构造缩减矩阵,十分耗时。提出一种通用特征基函数法结合模型参数估计技术快速计算目标宽带RCS的有效数值方法。该方法在最高频率点建模,生成通用特征基函数,在应用模型参数估计技术计算目标整个宽带RCS时,每个采样频率点的特征基函数直接复用通用特征基函数,大大节省了每个采样点的计算时间。与传统方法相比,该方法显著提高了计算效率。数值结果证明了该方法的有效性和精确性。The general characteristic basis function method（ GCBFM） is an efficient approach to analyze the wide-band electromagnetic scattering problems,but the traditional GCBFM needs to reconstruct the reduced matrix at each frequency point when calculating the wide-band radar cross section（ RCS） of the objects,which is very time-consuming. An efficient numerical approach was proposed to calculate the wide-band RCS of objects by using the general characteristic basis function method and model based parameter estimation. When using the model-based parameter estimation to calculate the wide-band RCS of objects,the general characteristic basis functions derived at the highest frequency point could be reused for each sampling point which would greatly save the calculation time of each sampling point. The efficiency was improved significantly with this method compared with the traditional method,numerical results demonstrate that the proposed method was efficient and accurate.

关 键 词：特征基函数法 模型参数估计 矩量法 雷达散射截面 

分 类 号：TN011[电子电信—物理电子学]