【摘要】 阐述了DTMF调频信号的产生和检测原理,分析了锯齿波扫频信号的特点,仿真了DTMF调频信号在锯齿波扫频信号干扰时的解码情况,得出了在特定信号检测方法条件下,无线通信系统采用DTMF调频信号进行远程控制时的抗干扰能力,对于分析和改善系统性能具有一定的参考意义。更多还原

【Abstract】 The transmission and detection principle of DTMF(Dual Tone Multi Frequency) frequency modulated signal is explained and the characteristics of sawtooth wave sweep signal are analyzed.Decode capability of DTMF frequency modulate signal under sawtooth wave sweep signal jamming environment have been simulated,which demonstrates the anti jamming ability of a remote wireless control system that employs DTMF frequency modulate signal.The results would be useful for analyzing and improving related wireless communication system performance.更多还原