The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.

该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。

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It is the ability it gives a few large firms to control the market for short periods of time, sucking investors into positions, or driving them out, not based on careful thought or analysis, but in emotional reaction to a sudden temporary intraday rally created by a wave of buy programs, or a sudden intraday decline created by a wave of sell programs.

FORBES: Program Trading Needs To Be Banned