文中就利用剪切干涉仪测量激光大气传输相位畸变的问题进行了探讨。
We have analytically investigated the beam quality by assuming the phase aberrations as Gaussian random variables.
应用信标技术可以降低大气湍流对光学系统的影响，人造信标是主动校正大气造成的波面相位畸变的重要手段。
Wavefront aberration caused by atmospheric turbulence weakens the capability of imaging optical system. Artificial beacon is used to correct the aberration successfully.
运用严格的光栅衍射耦合波理论分析光栅的衍射特性，发现该方案不会引入相位畸变。
The rigorous coupled-wave theory is used to analyze the characteristics of grating diffraction, and the results indicate that this method produces no phase distortion.
分析误差传递因子相角等因素对有限差分波动方程偏移造成的相位畸变问题，找到相应规律。
Cut-error that made from the finite difference mirgation, phase angle of error transfer function and factors that determine their values are discussed.
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.
在使用了光纤相位共轭镜的四通放大技术后，很好地补偿了由板条放大器热效应造成的光斑畸变。
Due to the using of fiber phase conjugating mirror, the deformation formed by the thermal effect from the slab amplifier has been compensated after four passing.
在高功率激光系统，激光束小尺度相位畸变波前探测是实现激光束中频段波前补偿与控制的重要前提。
In high power laser system, a small size phase-distortion wavefront measure is necessary to compensate and control the wavefront of laser beam with intermediate frequency.
这里须滤去由电抗器相位控制引起的谐波电流以避免不能接受的输电母线电压畸变。
These may be required where harmonic currents caused by the thyristor phase control of the reactor current must be filtered to prevent unacceptable transmission bus voltage distortion.
异常形式主要表现为水位升降，水位固体潮形态畸变和相位错动以及典型的“临震回跳”等。
The anomaly pattern is mainly expressed as the elevation and subsidence of water level, distortion and phase disturbance of solid tide form of water level, and typical 'impending rebound "and so on."
相位共轭光腔能消除腔内的波前畸变和介质扰动，从而能提高输出激光束的性能和质量。
Phase conjugate resonators offer the potential to increase laser output and improve beam quality by virtue of their ability to correct for severe intracavity aberrations.
本文对产生输入电流过零畸变的各种原因进行了定量分析，指出电感和输入电流与输入电压间的相位差是影响高频输入下输入电流过零畸变严重的根本原因。
This thesis analyzes the zero-crossing distortion, and points out that the major causes are the inductor and the phase displacement between the input current and the input voltage.
相位变更（PD）方法是一种基于两个或多个不同离焦面图像来恢复光瞳畸变波前相位的光学波前传感技术。
Phase diversity(PD)is a kind of wavefront sensing technique based on the measurement of two or more object images.
随偏移量的增大，相位畸变严重，远场传输能力下降。
When the misalignments increase, the phase distribution of BCAR output field is twisted more severely.
对于TM模式，相位受三维畸变影响较小，视电阻率较大，所以二维反演中可适当加大相位的权；
In TM mode, the distortion of phase is less than apparent resistivity, so the weight of phase in inversion can be increased.
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.
通过计算各相位角畸变波前的平均值，并将其共轭波前作为相应时刻的校正信号应用于畸变波前的自适应校正。
By computing the time-averaged wavefront, the adaptive conjugate correction wavefronts are achieved. Then the conjugate wavefronts are applied to correct the corresponding aberration wavefronts.
通过计算各相位角畸变波前的平均值，并将其共轭波前作为相应时刻的校正信号应用于畸变波前的自适应校正。
By computing the time-averaged wavefront, the adaptive conjugate correction wavefronts are achieved. Then the conjugate wavefronts are applied to correct the corresponding aberration wavefronts.
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