给出了调制畸变的实验结果。
The experimental results of modulation pattern effects are given.
数值计算结果表明，功率(能量)集中度与光阑的遮拦比、光束截断参数以及振幅调制和位要畸变参数等有关。
Numerical calculation results show the dependence of the power (energy) focusability on the obstruction ratio, truncation parameter, the amplitude modulation and phase fluctuation parameters.
为了补偿数字电视发射机的频谱畸变与相位失真，以得到最佳的VSB频谱特性，可以在调制器中加入预均衡网络对频谱进行预畸变。
To minimize the frequency and phase distortion in a DTV transmitter in order to achieve best VSB frequency performance, a pre equalizer can be inserted into the modulator.
然后，选取调制对比度描述灰度畸变的剧烈程度，分析了引起对比度变化的因素。
Then, the modulation contrast was selected to describe the intensity of grayscale distortion, and the factors of the contrast change were analyzed.
研究了液晶波前校正器位相调制曲线非线性的校正以及液晶自适应闭环对畸变波前的校正。
The correction of the nonlinearity of the liquid crystal wavefront corrector and the closed loop correction were investigated.
研究结果表明，群速度失配会导致二倍频光脉冲宽度的增大和转换效率的降低，非线性相位调制使二倍频光脉冲形状发生畸变，降低转换效率。
The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.
研究结果表明，群速度失配会导致二倍频光脉冲宽度的增大和转换效率的降低，非线性相位调制使二倍频光脉冲形状发生畸变，降低转换效率。
The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.
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