相移

One channel of the DS-QPSK signal could be simplified by the high correlation orthogonality of PN code, and then phase error detection was implemented through the reference of detecting phase error for BPSK signal with arc tangent function.

PN码具有很好的相关特性，可以简化DS-QPSK信号中的一路信号，进而借鉴二相相移键控信号的反正切鉴相方式完成鉴相。

It has been shown that when the theoretical phase shifts are used the poor accuracy in the determination of the interatomic distance is due to the use of the plane-wave rather than the spherical-wave approximation in the EXAFS scattering theory.

研究结果证明：（1）在EXAFS测定C（2×2）S/Ni（100）金属吸附表面结构的数据处理中所发现的理论相移相对实验相移存在的较大误差来自于EXAFS散射理论中所采用的平面波近似。

The simulative results verify theoretic analysis is proper. lensless Fourier holography ; off-axis ;3D reconstruction ; phase distortion

目前，主要有采用同轴记录光路结合相移技术的同轴相移数字全息川，和采用离轴记录光路结

A formula was derived and given to calculate the Shupe effect in the quadrupolar winding including the effects of the midpoint deviation and the fiber diameter. This formula, compared with that considering only the ideal situation, can not only be used to account the thermally induced nonreciprocal phase shift under different midpoint deviations and fiber diameters, but also indicate the effects of the fiber coil's structure when there exist nonideal factors.

本文分析了中点偏差、光纤直径尺寸对四极性绕法中相向传输光对称性的破坏，推导给出了包括中点偏差和光纤直径尺寸影响的四极性绕法热致非互易相移的计算公式，该公式相对于只考虑理想情况的计算公式，不仅能计算不同中点偏差和光纤直径情况下的热致非互易相移，而且揭示了存在非理想因素时，光纤环结构对热致非互易性的影响。

In the experiment, 40 Gb/s DPSK signal was demodulated successfully, and the extinction of the demodulated signal is 14.5 dB.

实验中实现了40 Gb/s差分相移键控信号的解调，解调信号消光比为14.5 dB，温度控制实现了输出结果的长时间稳定，并可在相长干涉和相消干涉之间转换。

The bandwidth using correspondence letter way for the sake of better land utilization also make signal can transmission larger of distance, in the numeral carry the wave the correspondence, we adoption three kinds of solution adjust a way: Move key to control Pin to move key to control with mutually move key to control.

为了更好地利用通信信道的带宽并使信号能够传送更大的距离，在数字载波通信中，我们采用了三种解调方式：幅移键控频移键控和相移键控。

Some circuits use resonant, quasi-resonant, and/or multi-resonant techniques. However, voltage or current stresses in these converters are higher and require the devices of higher VA rating. Some circuits use passive snubbers or active clamp techniques. However these converters become more complicate. Phase-shift ZVS technique has been used in bidirectional DC/DC converters since it can realize ZVS for all switches without auxiliary switches.

谐振、准谐振或多谐振技术方案，变换器的电压电流应力较高，变频控制增加了滤波器设计的难度；能量缓冲吸收电路或有源钳位电路方案，由于需要增加多个额外辅助元件，增加了变换器的复杂性；全桥相移技术方案，由于主电路无需增加额外元件，只需利用相移控制，即可实现软开关，因此引起关注。

Phase noise mainly comes from laser linewidth,laser phase offset,in/quadrature phase mismatch,90° hybrid phase imbalance,fiber channel and component in optical quadrature phase shift keyed transmission system.

在光四相相移键控系统中，相位噪声主要源于激光器的线宽、激光器的相位偏移、同相支路和正交支路相位不匹配、90°混频器的相位不平衡以及光纤和器件等引起的相位变化。

By demonstrating the feasibility of time stepping quadrature phase shifting method, we successfully remove the phase shifting device from the system and basically eliminated the errors induced by the inaccurate phase modulation.

在演算法方面，藉由证实时进正交相移法之可行性，将光路中的相移装置移除，终於使得因为相位调制方法不精准所造成的误差得到彻底的改善。

A method for use in a DPC includes: receiving ( 400 ) a control signal based on a desired output signal that identifies a first output tap on the delay line; based on the control signal, selecting ( 410 ) at least two output taps on the delay line for receiving at least two different phase-shifted clock signals; and generating ( 420 ) an output signal based on the control signal and the received phase-shifted clock signals that is substantially the desired output signal.

在DPC内使用的方法包括：基于期望的输出信号接收(400)用于识别该延迟线上的第一输出抽头的控制信号；根据该控制信号，在该延迟线上至少选择(410)两个输出抽头，以至少接收两个不同相移时钟信号；以及根据该控制信号和收到的基本上是期望的输出信号的相移时钟信号，产生(420)输出信号。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。