摘要
提出一种基于谱特征分析的雷达辐射源信号自动识别新方案。首先研究了几种常见雷达辐射源信号的频谱特征,给出了频谱函数的详细的数学表示和仿真图像;其次通过对信号频谱、二次方谱、四次方谱峰值特性分析,根据谱峰数目不同的特征提出一种快速自动识别方案;最后设计了识别流程图并仿真验证了该方案。仿真结果证明,该方法能够有效识别常规脉冲信号、频率编码信号、相位编码信号,且具有很好的低信噪比适应能力。
A novel fast automatic recognition scheme of radar signal based on the spectrum analy- sis is proposed. The spectrum characteristics of general pulse signal, FSK, BPSK and QPSK are analyzed in the paper. The number of signal peak value of spectrum, second power spectrum, and fourth power spectrum can be used as a fast recognition case. Simulation results show that general pulse signal, FSK, BPSK and QPSK could be recoganized effectively, and can be ex- tracted well and truly at low SNR.
出处
《电子信息对抗技术》
2015年第2期16-20,66,共6页
Electronic Information Warfare Technology
关键词
频谱分析
谱峰检测
自动识别
frequency spectrum analysis
peak value detective
automatic recognition
