摘要
针对现有的典型统计分布模型无法满足双基地雷达隐身飞机动态电磁散射分布特性的精度要求,提出一种改进的混合对数正态分布模型。该模型在典型对数正态分布模型的基础上,通过增加权重参数,构建混合对数正态分布模型,提高模型对复杂电磁散射分布特性的拟合精度。研究结果表明,双基地雷达隐身飞机动态RCS特性相对复杂,包括伪单基地电磁散射特性、双基地电磁散射特性和前向电磁散射特性。其动态RCS起伏分布特性也相对复杂,改进的混合对数正态分布模型对于起伏分布特性的拟合效果更好,且非参数检验结果降低至50%以下。
Aiming at the fact that the existing typical statistical distribution model cannot meet the accuracy requirements of the bistatic radar dynamic electromagnetic scattering distribution characteristics of stealth aircraft,an improved mixed log-normal distribution model was proposed.On the basis of the typical log-normal distribution model,the model constructed a mixed log-normal distribution model by adding weight parameters to improve the fitting accuracy of the model to the complex electromagnetic scattering distribution characteristics.The research results showed that the bistatic radar dynamic RCS characteristics of stealth aircraft were relatively complex,including pseudo-monostatic electromagnetic scattering characteristics,bistatic electromagnetic scattering characteristics and forward electromagnetic scattering characteristics.Its dynamic RCS fluctuation distribution characteristics were also relatively complicated.The improved mixed log-normal distribution model had a better fitting effect on the fluctuation distribution characteristics,and the non-parametric test results were reduced to less than 50%.
作者
马前阔
张小宽
宗彬锋
王阳
郑舒予
徐嘉华
MA Qiankuo;ZHANG Xiaokuan;ZONG Binfeng;WANG Yang;ZHENG Shuyu;XU Jiahua(The graduate school,Air Force Engineering University,Xi'an 710051,China;Air and Missile Defence College,Air Force Engineering University,Xi'an 710051,China;National University of Defense Technology,Changsha 410073,China)
出处
《探测与控制学报》
CSCD
北大核心
2022年第6期70-75,共6页
Journal of Detection & Control
基金
国家自然科学基金项目(61372033)
目标与环境电磁散射重点实验创新基金项目(STES2014-2)。
关键词
隐身飞机
双基地雷达
电磁散射特性
混合对数正态分布模型
stealth aircraft
bistatic radar
electromagnetic scattering characteristics
hybrid lognormal distribution model
