基于时频分析的相位编码信号检测及识别方法研究

说明：  低信噪比条件下( 0 dB) 对相位编码信号的检测及识别是当前脉内特征分析中的重点和难点, 基于这种原因, 提出了一种基于时频分析( 短时傅里叶变换) 方法对信号脉冲进行检测, 然后, 重点论述了低信噪比条件下( 0 dB) 对 相位编码信号的调制类型识别及参数估计, 根据对信号时频特征的分析, 建立对信号进行检测及识别的算法模型, 并给出了算法的理论依据, 通过计算机仿真实验证明了该方法的有效性。(The detection and recognition of the phase coded signal under the condition of low signal-to-noise ratio (0 dB) is the key and difficult point in the analysis of intra pulse characteristics, In this paper, a method based on time-frequency analysis (short time Fourier transform) is proposed to detect the signal pulse, and then (0 dB) is emphasized in the condition of low SNR Based on the analysis of the time-frequency characteristics of the signal, the algorithm model of signal detection and recognition is established, The theoretical basis of the algorithm is given, and the effectiveness of the method is proved by computer simulation.)

基于时频分析的相位编码信号检测及识别方法研究.pdf, 628809 , 2020-06-18