不同极化参数下非线性极化变换的描述  

Expression of Nonlinear Polarization-Vector Translation by Different Polarization Parameters

作　　者：张国毅[1] 邓维波[1] 林力[1] 刘永坦[1] 

机构地区：[1]哈尔滨工业大学,150001

出　　处：《系统工程与电子技术》2001年第6期82-86,共5页Systems Engineering and Electronics

摘　　要：A J Poelman等人提出了以极化椭圆的几何极化参数即椭圆率和椭圆倾角表示的非线性极化变换方法 ,有效地减少了多凹口极化滤波器凹口的数目 ,使多凹口滤波器的实时处理成为可能。为了拓展其应用 ,推导了用电场矢量的电极化参数即幅度极化参数和相位极化参数表示的非线性极化变换的表达式 ,并论证了两种参数下非线性极化变换之间的关系。理论证明电参数下的非线性极化变换具有椭圆极化参数下非线性极化变换的全部特性 ,适用于雷达中杂波和干扰的极化抑制。还利用该方法对高频地波雷达中天波干扰的极化抑制进行了仿真 。The nonlinear polarization-vector translation method proposed by A.J. Poelman can effectively decrease the number of notches of multinotch polarization filter, which makes the real-time processing of the multinotch polarization filter possible. But the algorithm is only described by geometrical parameters-ellipticity ratio and orientation angle that define the polarization ellipse. For its application in other situations, expression of the nonlinear PVT by electric parameters-amplitude polarization parameter and phase polarization parameter that define the electric field components is analyzed. This expression has all properties of the nonlinear PVT expressed by geometrical parameters and can be used in the suppression of interference and clutter in radar system. A simulation of sky- wave interference suppression in HF ground wave radar system is realized to explain its application in reality.

关 键 词：雷达 滤波器 非线性极化变换 极化参数 

分 类 号：TN957[电子电信—信号与信息处理]