R半径DFT在系统盲辨识中的应用

针对通信侦察中系统盲辨识的实际应用要求,提出一种基于R半径DFT技术粗略检测全盲系统零极点的方法。构造系统输出信号的含有R半径参数的辅助信号,通过计算辅助信号的DFT实现对原信号不同半径上傅里叶变换的DFT采样,检测R-DFT平面的极值点得到线性系统零极点的粗辨识。该方法无需系统的任何先验信息,有利于通信侦察方的技术实现。仿真实验验证了算法的有效性和可行性。

Application of the R-Radius DFT in System's Blind Identification

Aiming at the real application of the system's blind identification in the communication reconnaissance,a method based on the R-radius DFT is proposed for roughly detecting the zeros and poles of a blind system.An auxiliary signal of the system's output signal is constructed with the parameter,radius R;the Fourier transform of the original signal is DFT-sampled among various radiuses by calculating the auxiliary signal's DFT;and the extreme points of the R-DFT surface are the linear system's zeros and poles...