针对传统的PRI分选算法难以有效识别PRI变化复杂的重点雷达信号的问题，提出基于晶振特征的重点雷达信号快速靶向识别的方法。该方法避开常规PRI分选算法的分选流程,利用PRI之间的相关性对脉冲信号进行分选，可以对多目标同时识别。从PRI产生的原理着手考虑，PRI变化是否复杂对识别效果几乎没有影响。通过仿真与对比，验证该算法能够快速识别出重点雷达信号的脉冲序列，且对PRI变化复杂的雷达信号的识别效果较好。

To solve the problem that the traditional PRI sorting algorithm has difficulty in effectively identifying the key radar signals with complex PRI changes, a method of fast target recognition of key radar signals based on the characteristics of crystal oscillation is proposed. This method avoids the sorting procedures of the conventional PRI sorting algorithms, and uses the correlation between the PRIs to sort the pulse signal. This method can identify multiple targets simultaneously. According to the principle of PRI generation, whether the PRI change is complex or not has little effect on the recognition result.Through simulations and comparison, it is proved that the proposed algorithm can rapidly identify the pulse sequence of the key radar signal, and get a better recognition result of the radar signal with complex PRI changes.