基于自激振荡器模型的辐射源个体识别方法

A Specific Emitter Identification Method Based on Self-Excitation Oscillator Model

辐射源指纹识别也称为特定辐射源识别(SEI),是指通过对接收信号进行特征测量,确定产生信号的辐射源个体,是电子战、电磁环境监视等领域的关键技术之一。本文针对自激振荡类型的发射机,从射频振荡器的等效电路模型出发。提出了一种模型化的辐射源个体识别方法。仿真结果表明,该模型化方法扩展了传统的特征定义,集成信号瞬时频率、瞬时带宽的相关信息,具有良好的分类能力。在调制电压发生较大变化时,该方法能弥补传统上升沿、下降沿时延测量方法的不足。

Specific Emitter Identification （SEI） technology by which we can determine an emitter＇ s individual from it＇ s signal feature is a key technology of ESM and electromagnetic environment monitor. Here, a new SEI method based on equivalent circuit model of a RF self-excitation device is proposed. The model-based characterizing definitions,which expand the traditional features, at the same time integrate the relationship of signal＇s instantaneous frequency and instantaneous band information,have good performance in signal classification, especially when the modulation envelop varies between pulses. The simulation shows that.