论文部分内容阅读
为了提高时相调制(TPM)信号S变换的时频聚集性能,将广义S变换(GST)应用于TPM信号的时频分析中.GST在标准S变换窗函数的基础上,增加了可控参量,利用优化新增参量的算法,优化时频域各频率点处的时窗宽度,从而达到提高时频聚集性能的目的.仿真结果表明,广义S变换方法与标准S变换相比,能有效提高TPM信号的时频聚集性能,同时保持了TPM信号用于携带信息相位突变的特性,有利于下一步的信号检测.
In order to improve the time-frequency aggregation performance of time-domain modulation (TPM) signal S, the generalized S transform (GST) is applied to the time-frequency analysis of TPM signal.GST adds the controllable parameters , And the algorithm of optimizing the new parameters is used to optimize the time window width at each frequency point in the time-frequency domain so as to improve the performance of time-frequency aggregation. The simulation results show that the generalized S transform method can effectively improve TPM signal time-frequency aggregation performance, while maintaining the characteristics of TPM signal for carrying information mutation, is conducive to the next signal detection.