Evidently, there is another motion to be concerned with and that is the propagation of the modulation envelope.

显然，还应当考虑另外一种运动，那就是调制包络的传播。

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Envelope detection and parameter estimation of each modulation component are the main parts in measurement of voltage fluctuations and flicker.

包络线的检出和调制分量参数估计是电压波动与闪变检测的主要内容。

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The offset quadrature phase-shift-keyed(OQPSK) is an effective digital constant envelope modulation for band-limited nonlinear channel.

偏移四相相移键控（OQPSK）是一种适用于在限带非线性信道中使用的高效恒包络数字调制技术。

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