【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。更多还原

【Abstract】 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.更多还原