全极化散射中心提取与参数估计:P-ESPRIT方法

Full-Polarization Scattering Center Extraction and Parameter Estimation: P-ESPRIT Algorithm

该文提出了一种新的全极化散射中心提取与参数估计方法:P-ESPRIT方法。该方法是一种极化和超分辨联合处理方法,不仅实现了对各极化通道散射中心的数目、位置、强度以及归一化极化散射矩阵等参量的同时估计,而且充分利用了目标全极化信息,提高了散射中心提取与参数估计的精度。与MUSIC,ML等超分辨方法相比,P-ESPRIT不需要进行搜索,因此它还具有实时性高的优点。基于仿真和实测数据的实验结果证实了该方法的有效性。

A novel method which is called polarimetric-ESPRIT （P-ESPRIT） algorithm is presented for full-polarization scattering center extraction and parameter estimation. The P-ESPRIT algorithm is a joint processing of polarization and super-resolution. It is able to estimate the number, positions, intensities and normalized scattering matrices of scattering centers instantaneously rather than the one which extracts parameters from each channel separately, and its performance is better than the latter because the fully-polarized information is used. It has computational advantage over other methods like MUSIC and ML because it needn＇t search. The validity is proved by the experimental results based on simulated and real data.