摘要
提出了一种改进型的基于功放非线性特性的辐射源识别方法。在假定输入为窄带小功率信号下,通过对信号进行泰勒级数分析,提取只与泰勒级数系数有关的谐波特征,之后对其进行非线性变换,并将所得新的特征向量进行辐射源个体识别。通过对6部TBR-121A型电台1 200组数据进行的实验对比,结果表明文中所提的改进型方法在正确识别率方面比传统方法有较明显的提高,平均达到了90%以上。
An improved method based on nonlinearity character of power amplifiers for emitter identification is presented.Assumes that the input signal is narrowband and low-power,through the analysis of the signal based on Taylor series,we can get the harmonic characteristic which is only related to the Taylor series coefficients.Then,we change the characteristic with nonlinear function,and use the new characteristic what we get to identify the emitters.Finally,We do an contrastive experiment with six TBR-121A emitters which including 1 200 set of data.The experimental results show that the improved method what we present is better than the traditional method in the rate of correct identification,and the average correct rate is above 90％.
出处
《南京邮电大学学报（自然科学版）》
北大核心
2013年第6期54-58,共5页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
江苏省自然科学基金(BK2009059)资助项目
关键词
辐射源识别
功率放大器
非线性特性
谐波相对幅度
emitter identification
power amplifier
nonlinearity character
harmonic relative amplitude
