一种有效的脉内调制信号识别方法

An Effectual Approach of Intra-pulse Modulated Signal Recognition

文章在相位重构的基础上分析了各种常见脉内调制信号相位差分序列的特征,并给出了它们的识别方法。采用多重相位差分改善了算法对低信噪比环境的适应能力。本文还根据分析给出了脉内识别的系统框图,最后仿真验证了文中分析结论,给出了不同信噪比下各种调制信号的正确识别率。

The phase difference sequences＇ character of LFM,DLFM,BPSK and QPSK are analyzed in the paper. Based on the analysis of the normalized phase difference, a approach which can automatically recognize those signals is come out. The paper also display a frame of the intra-pulse modulation character recognize system. Simulation results demonstrate the efficiency of the modulation recognition approach, and achieved the recognition rate at different SNR.