摘要
提出了基于舰船强散射场减缩的有源对消方法。用多层快速多级子算法(MLFMA)分析了舰船的散射特性并对数据作平滑处理,直接从散射场中提取强散射源点的幅值、相位和极化信息,避免了估计散射中心的误差。分析了空间电磁信号的干涉特性,通过对消信号同回波信号在半空间的相干抵消实现了舰船隐身。仿真表明:对消后向散射场可以有效地降低单站雷达对舰船的探测能力,对消其它方向峰值散射场可以有效地降低舰船的总散射场。所提方法可为舰船有源对消隐身的工程实现提供重要的参考。
A kind of active cancellation method based on reduction of the strong scattering field of warship was proposed. Scattering properties of warship were analyzed through multi-level fast multi-pole algorithm （MLFMA） and the data was disposed by soothing processing. Amplitude, phase and polarization of the strong scattering point were extracted from the scattering field. The coherent cancellation characteristic between cancellation signal and echo signal was analyzed and applied to realize stealth of warship in half-space. Simulation results show that capability of mono-static radar to detect warship can be reduced effectively through canceling backscattering field, and total scattering field of warship can be reduced through canceling peak scattering field in the other orientations. The proposed method can also provide reference for warship＇s active stealth in project realization.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2013年第1期104-110,共7页
Journal of System Simulation
关键词
隐身技术
有源对消
舰船
雷达截面
极化
stealth technology
active cancellation
warship
RCS
polarization
