基于调频指数特征的通信辐射源个体识别

Specific Emitter Identification Based on Modulation Index

该文首次研究了通信辐射源个体特征对工作频率变化的鲁棒性。针对一类导频静噪的调频FM辐射源,提取调频指数Mf作为识别辐射源个体身份的特征。对4个实际调频辐射源信号样本的实验表明:在工作频率不变的条件下,Mf的精确估计值可以有效地对辐射源个体身份进行识别;在不同工作频率下,同一个辐射源的Mf值会发生较大变化,从而在一定程度上限制了该特征的应用。

The robustnessof emitter fingerprint With different ＇carrier frequencies is studied for the first time.According to FM e ted as fingerprint. mitters which use pilot single tone for noise-squelching, the modulation index Mf is By experiment based on data from four real FM emitters, it is proved that the accura mate of Mf can be used to identify the unique emitter on the identical frequency, but Mf of the same can changes obviously on different frequencies to limit the effect of the fingerprint.