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介绍了敌方隐身目标的威胁、P波段反隐身的基本原理及该频段电磁散射特性的研究现状,分析了基于快速多极子技术的全波数值仿真方法在隐身目标散射特性精确求解中的独特作用;阐释了基于快速多极子技术的全波数值仿真方案实施的矩量法原理、快速多极子技术、预处理算法及高效迭代求解技术,通过与标准体的测量结果对比,验证了仿真方案的可靠性及精度;利用文中提出的仿真框架对几种典型的隐身目标进行数值仿真,讨论了隐身目标在P波段的电磁散射特性。
This paper introduces the threats of stealth targets, the basic principle of P-band anti-stealth and the research status of the electromagnetic scattering characteristics in this band. The uniqueness of the full-wave numerical simulation method based on the fast multipole technique in the accurate solution of stealth target scattering characteristics is analyzed The principle of moment method, fast multipole technique, pretreatment algorithm and efficient iterative solution technique based on fast multipole technique are explained. The simulation results are compared with those of standard body The reliability and accuracy of the scheme are discussed. Several typical stealth targets are numerically simulated by using the simulation framework proposed in this paper. The electromagnetic scattering characteristics of stealthy targets in the P-band are discussed.