摘要
为了充分考虑舰船目标的多次散射及其与海面的耦合散射,首先采用高频混合方法研究海面与舰船目标的复合散射,即用物理光学方法近似仿真海面的电磁散射,用弹跳射线方法估算目标本身的电磁散射及其与海面的耦合电磁散射。然后,选取了不同结构的两种舰船模型进行仿真,计算了不同雷达参数下舰船模型及其与海面复合模型的电磁散射情况。仿真结果表明,该方法可估算目标复杂结构之间的耦合散射,与单纯的物理光学方法相比,仿真结果更可靠,可为后续基于机器学习进行舰船目标分类识别的研究提供大量可靠的训练数据。
In order to give full consideration to multiple scattering of ship target and its coupling with the surface scattering,this paper uses the high frequency mixing method to study the composite scattering of the sea and the ship target by adopting the physical optics method to approximately simulate the electromagnetic scattering of sea surface,and by using the shooting and bouncing ray method to estimate the target electromagnetic scattering and its coupling with the electromagnetic scattering of sea surface.In this paper,two ship models with different structures are selected as simulation examples,and the electromagnetic scattering results of the ship models and their composite models with see surface under different radar parameters are calculated.The simulation results show that this method can estimate the coupling scattering between complex structures of targets,and the simulation results are more reliable than the simple physical optics method.And the scattering results can provide a lot of reliable training data for the future research of ship target classification and recognition based on machine learning.
作者
何之媛
王蕊
王谷
崔闪
郭立新
HE Zhiyuan;WANG Rui;WANG Gu;CUI Shan;GUO Lixin(Research Institute of Radio Science of Xidian University,Xi’an 202006,Shaanxi,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)
出处
《空天防御》
2020年第3期78-82,共5页
Air & Space Defense
基金
国家自然科学基金(62071348,62071353)
上海航天科技创新基金(SAST2018-012)。
关键词
电磁散射
弹跳射线法
复杂目标
高频混合
electromagnetic scattering
shooting and bouncing ray method
complex target
high frequency mixing
