An signal noise ratio( SNR) adaptive sorting algorithm using the time-frequency( TF)sparsity of frequency-hopping( FH) signal is proposed in this paper. Firstly,the Gabor transformation is used as TF transformat...An signal noise ratio( SNR) adaptive sorting algorithm using the time-frequency( TF)sparsity of frequency-hopping( FH) signal is proposed in this paper. Firstly,the Gabor transformation is used as TF transformation in the system and a sorting model is established under undetermined condition; then the SNR adaptive pivot threshold setting method is used to find the TF single source. The mixed matrix is estimated according to the TF matrix of single source. Lastly,signal sorting is realized through improved subspace projection combined with relative power deviation of source. Theoretical analysis and simulation results showthat this algorithm has good effectiveness and performance.展开更多
为解决信号分选中的"漏批"问题,提出了一种基于相参雷达信号自相关函数的分选新方法。该方法利用相参信号的瞬时自相关函数,建立了峰值比判决模型,并对该模型进行分选仿真应用。仿真结果表明,在信噪比高于5 d B时,方法能够解...为解决信号分选中的"漏批"问题,提出了一种基于相参雷达信号自相关函数的分选新方法。该方法利用相参信号的瞬时自相关函数,建立了峰值比判决模型,并对该模型进行分选仿真应用。仿真结果表明,在信噪比高于5 d B时,方法能够解决单频、线性调频、非线性调频脉冲串信号一次分选过程中的"漏批"问题,验证了所提出方法的有效性。展开更多
基金Supported by the National Natural Science Foundation of China(64601500)
文摘An signal noise ratio( SNR) adaptive sorting algorithm using the time-frequency( TF)sparsity of frequency-hopping( FH) signal is proposed in this paper. Firstly,the Gabor transformation is used as TF transformation in the system and a sorting model is established under undetermined condition; then the SNR adaptive pivot threshold setting method is used to find the TF single source. The mixed matrix is estimated according to the TF matrix of single source. Lastly,signal sorting is realized through improved subspace projection combined with relative power deviation of source. Theoretical analysis and simulation results showthat this algorithm has good effectiveness and performance.
文摘为解决信号分选中的"漏批"问题,提出了一种基于相参雷达信号自相关函数的分选新方法。该方法利用相参信号的瞬时自相关函数,建立了峰值比判决模型,并对该模型进行分选仿真应用。仿真结果表明,在信噪比高于5 d B时,方法能够解决单频、线性调频、非线性调频脉冲串信号一次分选过程中的"漏批"问题,验证了所提出方法的有效性。