基于时频滤波技术的时间相位信号检测方法

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.