Parameter Estimation and Performance Analysis of Coherent Polarization Attributed Scattering Center Model  

作　　者：XU Shaokun WEI Xizhang LI Xiang GUO Guirong 

机构地区：[1]School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [2]Unit 63880 of PLA, Luoyang 471003, China

出　　处：《Chinese Journal of Electronics》2013年第1期195-201,共7页电子学报（英文版）

基　　金：This work is supported by the National Science Fund for Distinguished Young Scholars of China （No.61025006）; the National Natural Science Foundation of China （No.61271442）.

摘　　要：Both scattering center and polarimetric in-formation are of great significance for radar target recog-nition and classification. Firstly, a Coherent polarization attributed （CPA） scattering center model is established to provide a relatively complete description of the tar-get physical structure. Then, an effective parameter es-timation method is proposed, where the full-polarizatlon echoes are used for imaging to enhance the target＇s fea- tures, thereafter, the parameters of the CPA model are es-timated via image segmentation and an Approximate maxi-mum likelihood （AML） method. Particularly, the Cramer-Rao bounds （CRBs） for parameter estimation of the CPA model are derived. Experiments with the measured data in anechoic chamber validate the performance of the pro-posed method.

关 键 词：Coherent polarization attributed（CPA） model Parameter estimation Cramer-Rao bounds（CRBs） Performance analysis. 

分 类 号：TN957.52[电子电信—信号与信息处理] TP13[电子电信—信息与通信工程]