• Based on the characteristics of Domestic frequency shift key track signal, this paper presents a kind of appropriate detection method for our national train signal — Time-frequency analysis.

    根据轨道信号特点本文提出了适合我国铁路信号的检测方法——时分析的方法。

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  • The key factors of the Relayed frequency shift jamming to it's quality are it's frequency shift amount and the time delay between the jamming pulse and the jammed signal.

    决定转发脉冲干扰品质信号脉冲相对延迟时间

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  • In movement state, the technology of synchronization is the key of overcoming Doppler frequency shift in the communication, and the performance of communication has influenced.

    运动状态同步技术通信领域克服多普勒关键技术直接影响通信系统的性能

    youdao

  • About GPS receiver, the research importance is high-dynamic receiver. The key is to solve the Doppler frequency shift caused by the high-speed movement of carrier.

    GPS接收机中,目前研究重点高动态环境下的接收机,关键解决载体高速运动给GPS接收机附加多普勒问题。

    youdao

  • In a mobile environment, ICI is mainly caused by Doppler frequency shift. While, when combined with CDMA, Multiple Access Interference (mai) is another key factor affecting system performance.

    移动环境下ICI的产生主要多普勒引起同时CDMA结合,CD MA系统本身的干扰(MAI)也是影响系统性能的关键因素

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  • An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.

    采用DSP软件方法,研制了一套基于MFSK调制非相干能量检测水声调制解调系统

    youdao

  • An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.

    采用DSP软件方法,研制了一套基于MFSK调制非相干能量检测水声调制解调系统

    youdao

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