不同取向非相干箔条云对入射极化的敏感特性  

Sensitive Characteristics to Incident Wave Polarization of Non-Coherent Chaff Clouds of Different Spatial Distribution

作　　者：党晓江[1] 李政杰[1] 司文涛[1] 

机构地区：[1]空军工程大学防空反导学院,西安710051

出　　处：《中国电子科学研究院学报》2013年第4期407-412,共6页Journal of China Academy of Electronics and Information Technology

基　　金：陕西省自然科学基金(2010JQ8007)

摘　　要：箔条云对入射极化方式具有选择特性。基于竖直方向偶极子极化散射矩阵和非相干散射模型,建立了箔条云雷达视线方向非相干极化随机散射过程模型,给出了散射极化信息均值和方差的数值计算表达式,使用MATLAB软件采用数值计算方法研究分析了空间姿态服从不同均值正态分布、线形分布和球面均匀分布箔条云对入射极化的敏感特性。仿真结果显示,同分布箔条云在不同雷达视角下选择特性不同,不同分布箔条云在相同雷达视角下的选择特性也有差异。结论为干扰方设计箔条云和抗干扰方选择入射极化方式提供了理论指导。Chaff clouds are selective for incident wave polarization.Based on dipole polarimetric scattering matrix and non-coherent model in vertical direction,Non-coherent polarimetric randomized scattering procedure model in radar sight direction is constructed,numerical computation expressions of mean and variance of scattering polarimetric information are derived,and sensitive characteristics to incident wave of chaff clouds obeying gaussian distribution of different mean,linear distribution and uniform sphere distribution are investigated and analyzed numerically by using MATLAB.The simulations show that uniform distribution chaff has different sensitive characteristics in different radar sight direction,and that of chaff clouds of different distribution have also differences in the same radar sight direction.The conclusions are provided theoretical guide for the design of chaff clouds for jammer and selection of incidence polarization for anti-jammer.

关 键 词：箔条云 非相干 入射极化 敏感特性 空间取向分布 

分 类 号：TN957[电子电信—信号与信息处理]