一种脉冲重复间隔复杂调制雷达信号分选方法
doi: 10.3724/SP.J.1146.2013.00060
A Method of Signal Sorting for Radar Signal of Pulse Repetition Interval Complex Modulated
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摘要: 雷达辐射源分选是电子战系统的关键技术之一。为了解决传统的基于脉冲重复间隔(PRI)的分选方法不能有效分选PRI复杂调制雷达信号的问题，该文提出一种利用脉冲到达时间与雷达帧周期的对应关系构成的2维特征向量来提取脉冲序列中PRI的变化规律，进而实现PRI复杂调制雷达信号分选的新方法。该方法可以在脉冲丢失严重且存在噪声脉冲的情况下获得满意的分选结果，并利用模拟仿真验证了方法的有效性。Abstract: Sorting of radar emitters is a vital technology of the radar countermeasure system. To solve the problem that the traditional methods which are based on the Pulse Repetition Interval (PRI) can not sort the signal of PRI complex modulated effectively, this paper introduces a new method which use two-dimensional feature vector that consists of Time Of Arrived (TOA) with frame period to sort radar signals of PRI complex modulated. Even in noisy environment it can get appropriate accuracy of sorting. Extensive Monte Carlo simulation results indicate the effectiveness of the method.
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