摘要
雷达信号分选是雷达对抗研究的重点问题,其性能直接影响雷达对抗系统的效能.脉冲重复间隔(pulse repetition interval,PRI)变换分选算法是一种经典的雷达信号分选算法,其对PRI抖动和脉冲缺失有良好的适应性,但存在计算量大,无法满足实时计算的需求以及无法分选PRI值相同或相近的脉冲序列的问题.本文提出一种高效的雷达信号综合分选算法有效解决了上述问题.算法首先利用基于聚类的直方图算法估计出潜在PRI值集合,然后采用PRI识别准则筛选潜在PRI值,进一步利用PRI变换算法估计真实的PRI值,最后采用改进的序列检索算法完成脉冲序列的分离.仿真实验表明,在PRI抖动率为±10%、脉冲缺失率为10%时,算法能正确分选同时到达的四部雷达信号,验证了所提分选算法的有效性与先进性.
Radar signal de-interleaving is an essential issue in radar countermeasure research,and its performance directly affects the effectiveness of radar countermeasure systems.The pulse repetition interval(PRI)transform deinterleaving algorithm is a classic radar signal de-interleaving algorithm.This algorithm has good adaptability to PRI jitter and pulse loss,but it has an extensive calculation and cannot meet real-time requirements and the inability to deinterleaving pulse sequences with the same or similar PRI values.This paper proposes an efficient radar signal comprehensive de-interleaving algorithm to effectively solve the above problems.The algorithm first uses a clusterbased histogram algorithm to estimate the set of potential PRI values and then uses period identification criteria to filter the potential PRI value.Further,the PRI transform algorithm is used to estimate the actual PRI value,and finally,an improved sequence retrieval algorithm is used to complete the separation of the pulse sequence.Simulation experiments show that when the PRI jitter rate is±10%and the pulse missing rate is 10%,the algorithm can correctly de-interleave the four radar signals arriving at the same time.Simulation experiments verify the effectiveness and advancement of the proposed de-interleaving algorithm.
作者
成文海
卢伟
刘毅
晁坤
张群英
CHENG Wenhai;LU Wei;LIU Yi;CHAO Kun;ZHANG Qunying(Aerospace Informatory Research Institute,Chinese Academy of Sciences,Beijing 100000,China;Key Laboratory of Electromagnetic Radiation and Sensing Technology,Beijing 100000,China;School of Electronic Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100000,China;China Research Institute of Radiowave Propagation,Qingdao 266107,China)
出处
《电波科学学报》
CSCD
北大核心
2023年第2期298-305,共8页
Chinese Journal of Radio Science
基金
中国电波传播研究所稳定支持科研经费(A132003W02)。
关键词
雷达信号分选
脉冲重复间隔(PRI)变换
PRI识别准则
序列检索
radar signal de-interleaving
pulse repetition interval(PRI)transformation
PRI identification criteria
sequence retrieval
