FSK/PSK混合调制信号多参数估计  

Multi-Parameter Estimation for Hybrid Modulated FSK/PSK Signals

作　　者：雷雪梅[1,2] 吕镜清[2] 杨万麟[1] 付海涛[1,2] 

机构地区：[1]电子科技大学电子工程学院,成都610054 [2]信息综合控制国家重点实验室,成都610036

出　　处：《电子信息对抗技术》2009年第6期9-13,共5页Electronic Information Warfare Technology

摘　　要：通过对FSK/PSK混合调制雷达信号脉内特征的分析,提出了一种FSK/PSK混合调制信号多参数估计方法。利用快速四阶循环累积量算法、时频脊线分析与小波变换相结合的方法,实现了跳频频率和码速率等参数的高精度估计。仿真表明,该方法可在较低信噪比下得到该混合调制信号的多参数高精度估计,具有较高的工程应用价值。A method of multi-parameter estimation for hybrid modulated FSK/PSK radar signal is proposed based on the analysis on the intra-pulse characteristics of hybrid modulated signal. They are used to yield accurate estimation for the hop frequencies and hop rate, which are fast 4th-order cyclic cumulants algorithm, time-frequency backbone curve analysis, and wavelet transform. The simulations show that multi-parameter of the hybrid modulated signals can be estimated accurately at low SNR, and the method has high practicability to engineering.

关 键 词：FSK/PSK信号 循环累积量 时频脊线 小波变换 

分 类 号：TN971.1[电子电信—信号与信息处理]