超电大目标与分形海面复合散射研究  

Study on Compound Scattering of Extremely Large Electric Size Target and Fractal Sea Surface

作　　者：吴家珣 王友成 陈士举 余泽太[1] 杨河林[1] WU Jia-xun;WANG You-cheng;CHEN Shi-ju;YU Ze-tai;YANG He-lin(College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China;Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory,Beijing 100074,China)

机构地区：[1]华中师范大学物理科学与技术学院,武汉430079 [2]复杂系统控制与智能协同技术重点实验室,北京100074

出　　处：《微波学报》2021年第5期39-45,共7页Journal of Microwaves

基　　金：中央高校基本科研基金(CCNU20GF006)。

摘　　要：舰船与海面构成复合目标,其雷达散射截面(RCS)的研究一直是电磁计算领域中的重点和难点。文中建立了Weierstrass分形海面和目标三角面元的几何模型以及基于物理光学法(PO)和弹跳射线法(SBR)的海面目标的电磁散射模型。采用OpenGL图形编程技术与C++多线程处理技术设计了一款可视化目标电磁散射预估系统(ESEE)V1.0,对比典型目标体RCS与商业软件FEKO的计算结果,验证了ESEE的可靠性。通过计算不同海况的海面RCS及超电大尺寸舰船与海面复合散射RCS,分析了海面散射以及超电大目标与海面复合散射特性。The research of radar cross section(RCS) about composite target between ship and sea surface has always been an important and difficult point in the field of electromagnetic computation. In this paper, the sea surface models based on Weierstrass fractal sea surface, the triangular surface element models of target and the electromagnetic scattering models of sea surface target based on physical optics method(PO) and shooting and bouncing rays(SBR) method are set up. A visual electromagnetic scattering estimation system(ESEE) V1.0 is designed by using OpenGL graphic programming technology and C++ multithreading processing technology. Comparing the calculation results of typical target far-field RCS with the commercial software FEKO, the reliability of ESEE is verified. By calculating the RCS of the sea surface under different sea conditions and the composite RCS between the extremely large electric size ship and sea surface, the scattering characteristics of sea surface and the composite targets are analyzed.

关 键 词：雷达散射截面 分形海面 超电大尺寸 弹跳射线法 物理光学法 

分 类 号：U674.70[交通运输工程—船舶及航道工程] TN95[交通运输工程—船舶与海洋工程]