基于序列时延相关性的PRI变换改进算法

An Improved Algorithm for PRI Transform Based on Coherence of Time Delay Sequence

针对PRI变换法面对参差PRI形式信号分选效果不佳的问题,提出了一种基于序列时延相关性的PRI变换改进算法。在PRI变换法的基础上引入脉冲序列时延自相关,通过分析定义的自相关函数产生的峰值谱线,确定参差PRI序列的骨架周期,并将分析结果引入PRI谱线图中配合分选。最终完成对所有信号的分选。该算法结构简单,既保留了PRI变换法自身抑制谐波以及分选复杂形式PRI信号的优势,又能对参差PRI序列有效地检测分选算法,仿真实验验证了算法的实用性。

Aimed at the deficiency of the PRI transform algorithm in stagger PRI sorting,an improved algorithm for PRI transform based on the coherence of the time delay sequence is proposed.The pulse autocorrelation of time delay is introduced into the algorithm on the basis of PRI transform.It ultimately ensures the stagger PRI with spectral line created by the coherence of time delay sequence,and introduces the spectral line of autocorrelation into PRI spectrum.The algorithm is simple in structure and can detect both stagger PRI and other complex forms of PRI.The simulation experiments prove that the proposed algorithm is feasible.