基带信号的脉内特征分析算法研究  

A study on the algorithm of in-pulse feature analysis of baseband signals

作　　者：吕新正[1] 柳桃荣[1] 王明[1] 

机构地区：[1]华东电子工程研究所,安徽合肥230031

出　　处：《雷达与对抗》2008年第4期15-19,共5页Radar & ECM

摘　　要：通过提高基带信号相位的直流分量和计算相位的高阶差分来提取信号的瞬时频率,然后利用瞬时频率及其差分实现信号的自动识别和参数估计。理论分析了算法的实现过程,并给出了算法流程图。仿真结果表明,本文的算法在SNR≥10dB下可以实现基带信号的自动识别和调制参数的高精度估计。The instantaneous frequency of baseband signals is extracted by improvmg the DE component and computing the high-order difference of the phase, and the instantaneous frequency and its difference are used to recognize the signals automatically and estimate the parameter. The implementation process of the algorithm is analyzed theoretically, and the flow chart is given. The simulation results show that the algorithm can recognize the signals automatically and estimate modulation parameter with high precision at SNR ≥ 10dB.

关 键 词：相位差分 调制参数 自动识别 瞬时频率 

分 类 号：TN911.7[电子电信—通信与信息系统]