一种新的基于PRI的脉内调制信号分选算法

New algorithm for sorting intra-pulse modulated signals based on PRI

现有的基于正弦波抽取特性的分选算法,是利用脉内调制信号的时变矩在不同延时条件下转化为不同的正弦波,对不同种类的已调信号的分选有着明显的作用,但对于那些有着相同调制类型却有不同调制参数的信号是无效的。该文提出了一种基于正弦波抽取——脉冲重复间隔(PRI)的新算法。首先基于正弦波抽取特性算法来区分信号的调制类型,然后用PRI来进一步分选那些相同类型下不同参数的信号。仿真结果表明,该新方法是准确有效的。

The existing sorting algorithm based on the characteristics of the sine wave extraction is to use the time-varying matrix of the pulse modulated signals to convert into different sine waves under different delay conditions, which has the obvious effect on the sorting of different kinds of modulated signals, but is invalid for those with the same modulation type but different modulation parameters of the signals. A new algorithm based on the sine wave extraction and the pulse repetition interval（PRI） is proposed. Firstly, the sine wave extraction is used to separate signals with different modulation types, and then PRI is used to further sort the signals with the same modulation types but different modulation parameters. The simulation results show that the new method is accurate and effective.