基于时频滤波技术的时间相位信号检测方法  

Time Phase Detection Method of Time-frequency Filter Technique

作　　者：张丹[1] 余义德[1] 王红萍[1] 

机构地区：[1]中国人民解放军91550部队

出　　处：《无线电工程》2016年第12期31-34,42,共5页Radio Engineering

摘　　要：针对时间相位调制信号检测困难的问题,从信号时频分析技术入手,提出了基于Choi-Williams分布的TPM信号检测方法。建立了TPM信号的Choi-Williams分布检测模型,对经过Choi-Williams分布后TPM信号的理论表达式进行了推导,在Matlab仿真环境中对该方法进行了验证。仿真结果表明,Choi-Williams分布检测方法有效提高了系统的误码率性能。To solve the problem of difficult detection of time phase modulated signals,the method of TPM signal detection based on Choi-Williams distribution is proposed on the basis of signal time-frequency analysis.The Choi-Williams distribution detection model is built for TPM signals,then,the theoretical expression for TPM signals after Choi-Williams distribution is deduced.The method is sim- ulated in the Matlab environment.The simulation results prove that the Choi-Williams distribution method greatly improves the system BER performance.

关 键 词：时间相位调制 Choi-Williams分布 时频分析 滤波器 

分 类 号：TN911.7[电子电信—通信与信息系统]