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针对相干情形特征极化理论未涉及目标参数变化对特征极化的影响,结合同极化功率密度图详细研究了这一问题.首先对极化散射矩阵进行变极化基处理使其对角化;然后定义了矩阵幅度、绝对相位、幅度比及相位差等4个目标参数,将该对角阵参数化;在此基础上研究了4个目标参数变化对同极化通道目标特征极化的影响,包括其在功率密度图上的个数、位置及极性;最后利用Poincare极化球表征了这些特征极化,并得出了6点结论.实际目标特征极化求解的实验结果验证了理论分析的正确性.
According to the fact that the characteristic polarization theory of the coherent situation does not involve the influence of the target parameter variation on the characteristic polarization, this problem is studied in detail with the co-polarization power density diagram.Firstly, the polarization polarization matrix is transformed into the polarization Then the four target parameters of matrix amplitude, absolute phase, amplitude ratio and phase difference are defined, and the diagonal matrix is parameterized. Based on the above, four target parameters are changed to polarize the target polarization Including its number, position and polarity on the power density map. Finally, Poincare polarization sphere is used to characterize these characteristic polarizations and the conclusions of the six-point conclusion are obtained. The experimental results of the actual target characteristic polarization verify Correctness of theoretical analysis.