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Synthetic algorithm for deinterleaving radar signals in a complex environment
IET Radar Sonar and Navigation ( IF 1.7 ) Pub Date : 2020-11-30 , DOI: 10.1049/iet-rsn.2020.0251
Zhang Chunjie 1 , Liu Yuchen 1 , Si Weijian 1
Affiliation  

The electronic support measure has a pivotal role in electronic warfare. Radar signal deinterleaving achieves complex radar pulse streams to deinterleave by analysing the intercepted radar emitter signals and estimating the pulse repetition interval (PRI) values. At present, most of the deinterleaving algorithms use the classical model of pre-sorting combined with the PRI deinterleaving algorithm, which is challenging to adapt to the current radar environment. The agility of pulse parameters increases the error rate; the existence of PRI jitter and pulse missing leads to the sub-harmonic problem and low estimation accuracy; the overall algorithm real time is mediocre. To overcome these disadvantages, the authors propose a synthetic algorithm incorporating the statistical histogram into pre-sorting, combining the improved sequence difference histogram algorithm with the multi-width PRI transform in PRI deinterleaving. The simulation results show that the algorithm can accurately estimate the PRI values in a short time and detect various radar signals. C language experiments validate the algorithm in real time.

中文翻译:

复杂环境中雷达信号解交织的合成算法

电子支持措施在电子战中具有举足轻重的作用。雷达信号解交织通过分析拦截的雷达发射器信号并估算脉冲重复间隔(PRI)值,实现复杂的雷达脉冲流解交织。当前,大多数解交织算法使用经典的预分类模型与PRI解交织算法相结合,这对适应当前的雷达环境提出了挑战。脉冲参数的敏捷性增加了错误率;PRI抖动和脉冲丢失的存在导致了次谐波问题和较低的估计精度。总体算法实时性中等。为了克服这些缺点,作者提出了一种将统计直方图纳入预排序的综合算法,将改进的序列差异直方图算法与PRI解交织中的多宽度PRI变换相结合。仿真结果表明,该算法能在短时间内准确估计PRI值并检测各种雷达信号。C语言实验实时验证了该算法。
更新日期:2020-12-01
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