基于稀疏成份分析的几何绕射模型参数估计

Parameter Estimation of GTD Model Based on Sparse Component Analysis

雷达目标散射中心的参数估计对目标特性分析和目标识别有重要意义。该文以几何绕射模型为基础,综合利用多频段的频域测量数据,给出了散射中心位置、幅度和散射类型参数的融合估计方法。数值仿真结果表明, 该方法能有效地挖掘模型信息,具有超分辨能力,给超宽带雷达信号处理提供了新的途径。

Parameter estimation of radar target scatterer plays an important role in the process of target characteristics analysis and target recognition. Based on the GTD（Geometrical Theory of Diffraction） parametric model, this paper presents a novel method which can synthetically apply the multi-band measurements in frequency domain and effectively estimate the parameters of scatterers, including location, amplitude and scattering type. The numeric results indicate that the method can effectively mine the information hidden in the model and hold the ability of supper-resolution, which provides a new way to ultra-wide-band signal processing of radar.