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。
Most of the modern modulation techniques are jin use of a non-constant envelope modulation, which has a large difference between peak and average.
大多数的现代的调制技术都运用了非恒包络调制方式，并且峰值和平均值相差较大。
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。
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。
Compared with in vitro AM modulation modes, the demodulator adopts the diode peak envelope detector for demodulation.
相对于体外的AM调制方式，解调器采用二极管峰值包络检波进行解调。
And a theoretical model is established to expound the variation of pulse duration and the modulation on the pulse envelope similar to the diffraction characteristics in spatial domain.
通过与光束的空间传输特性类比解析了光栏宽度变化引起的脉宽变化以及脉冲轮廓出现时间衍射调制现象；
Modulation in the Q switched envelope was found and an explanation was given.
观察到了调q脉冲包络中的调制现象并给出了合理的解释。
Modulation in the Q switched envelope was found and an explanation was given.
观察到了调q脉冲包络中的调制现象并给出了合理的解释。
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