估计残差功率度量下的UWB-SAR抑制RFI算法性能

Performance of RFI Suppression Algorithms in UWB-SAR Measured by Estimation Residual Power

在基于正弦波模型的UWB SAR抑制RFI框架下 ,提出了综合反映频率、幅度和相位估计误差的估计残差功率 (ERP)度量指标 ,并以此为准则比较了几种常用的正弦参数估计算法以及基于特征结构分析的最大似然方法的性能。分析结果对于选择和设计有效的UWB SAR抑制RFI算法具有重要的指导意义。仿真实验验证了所得结论的正确性。

The concept of estimation residual power (ERP) is proposed in the framework of sinusoidal-based RFI suppression in UWB-SAR,which incorporates the estimations errors of frequency, amplitude and phase. Under this criterion, the algorithms of several common parameter estimations and the eigenstructure-analysis-based maximum likelihood estimation are compared. The results have a great value to the selection and design of efficient RFI suppression algorithms in UWB-SAR. Computer simulations verify the validity of our conclusions.