基于脉冲样本图和相对熵的辐射源威胁评估

Emitter Threat Assessment Based on Pulse Sequence Pattern and Relative Entropy Evaluation Method

针对日益复杂的电磁环境以及信号样本空间大和信号特征维数高的问题,在机载电子对抗情报分析离线处理可以不受计算资源的限制的基础上,提出了基于脉冲样本图和组合赋权相对熵排序法的机载电子对抗情报分析中的辐射源威胁评估方法。首先引入脉冲样本图这种新的雷达信号表述方式,据此建立了新的辐射源数据库,最后采用组合赋权的相对熵排序法对TOPSIS法进行改进并定量描述辐射源威胁等级。仿真实验结果表明:所提方法客观合理,可实现对辐射源威胁程度的准确评估。

Aiming at the problem of radar signal representation formulating method of traditional emitter database and considering the off line processing characteristic of airborne EW information analysis,a new emitter threat assessment method of airborne EW information analysis based on pulse sequence pattern and combination weight relative entropy evaluation method was proposed.A new emitter database based on pulse sequence pattern was established,and then a new threat assessment system was established,finally combination weight relative entropy evaluation method was adopted to improve the TOPSIS method and quantitatively describe the threat level of the radiation source.The simulation results show that the proposed algorithm is objective and reasonable,and can achieve a good evaluation of the threat grade of the emitter.