电子学报2011，Vol.39Issue(12)：2755-2760,6.
基于CP-GTD模型的三维散射中心参数估计
Parameter Estimation of 3D Scattering Centers Based on CP-GTD Model
摘要
Abstract
As a basic characteristic of radar target in high frequency domain, scattering centers can characterize its elaborate physical structure.Using the weak coupling property between the type and position parameters of a scattering center, the three-dimensional (3D) position parameters were estimated via an ESPRIT method based on the foundation of 3D Coherent Polarimetric GTD (CP-GTD) model.Then the types of scattering centers were estimated on the orthogonality between the signal subspace and noise subspace, while the least square method was used to calculate the coherent polarimetric scattering matrices.Compared to existing estimation methods based on the mono-polarization model, the proposed method provides better estimation performance and stronger noise resistance,and can estimate the coherent scattering matrices of scattering centers directly. Simulation results show its effectiveness and robustness.关键词
CP-GTD模型/三维散射中心/参数估计/相干散射矩阵Key words
coherent polarimetric GTD model/3D scattering center/parameter estimation/coherent scattering matrix分类
信息技术与安全科学引用本文复制引用
徐少坤,刘记红,魏玺章,黎湘..基于CP-GTD模型的三维散射中心参数估计[J].电子学报,2011,39(12):2755-2760,6.基金项目
国家自然科学基金委杰出青年基金(No.61025006) （No.61025006）
国家自然科学基金(No.60402032) （No.60402032）
