一种多分量LFM信号参数估计的快速仿真算法  

A simulation fast algorithm for parameters estimation of the multicomponent LFM signals

作　　者：侯维娜[1] 欧国建[2] 陈玲珑[1] 何俞璟[1] 

机构地区：[1]重庆邮电大学光电工程学院,重庆400065 [2]重庆大学通信工程学院,重庆400030

出　　处：《重庆邮电大学学报（自然科学版）》2013年第4期459-463,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：重庆市教委项目(KJ100501);重庆邮电大学自然科学基金(A2011-15)~~

摘　　要：通过对Wigner-Ville分布(WVD)和Radon变换的详细分析,提出了一种基于Radon-Wigner变换的参数估计仿真算法,这种算法通过对信号WVD所得二维函数矩阵的行列按一定比例扩展,再对扩展后的矩阵进行Radon变换,从而实现了线性调频信号(linear frequency modulation,LFM)信号的Radon-Wigner变换。该算法具有快速性、精确性好的特点,对多分量的LFM信号进行详细的仿真分析,仿真结果表明,该算法与解线调方式得到的仿真算法对比,速度有较大幅度的提高。A simulation algorithm of parameter estimation based on Radon-Wigner transform is presented by analyzing WVD and Radon transform in detail.The algorithm accomplishes the Radon-Wigner transform of LFM signal by Radon transform of an expanded matrix with rows and lines of the two dimension matrix obtained by WVD,which are expanded with a certain proportion.The algorithm enhances the performance in terms of speed and accuracy.By simulation analysis of multicomponent LFM signals,the results revealed the speed of simulation has been improved more significantly than obtained by dechiping.

关 键 词：RADON-WIGNER变换 行列扩展 解线调 参数估计 仿真算法 

分 类 号：TN911.7[电子电信—通信与信息系统]