相位

The relationship between the accuracy of OAF algorithm and phase shifter errors is given.

给出了这种方法的相位复原精度与移相器的位移误差之间的关系式，从关系式中可见，OAF算法大大地减小由于移相器的位移误差而引起相位复原误差。

The theory of phase measurement is applied to determining the object distance in order to guarantee traffic safety.

文章将相位测距法用于解决汽车安全领域里的物体距离测量，对基于相位测距原理的雷达进行了理论分析。

First, we calculate out the zero point in a simple numeral method, then we get the phase according to the fact that the symbol of phase changed is opposite in the positive-slope and the negative-slope of triangle wave. This method has the following characteristics: easy to calculate, simple to realize and high precision.

首先用简单的数值方法较准确的计算出零点时刻；进而根据三角波扫频时正程和逆程相位变化符号相反的特性，巧妙的完成了相位计算，该方法具有计算简单、实现方便、准确度高等特点。

It is found out that the different titling directions of moving mirror affect the system error independently, at the same time they can be added. The original phase of the interferogram is changed slowly or rapidly with the optical path difference changed, and the phase error is different too.

在动镜的运动中，左右方向的倾斜和俯仰方向的倾斜对系统的影响彼此具有独立性，又具有叠加性；干涉图中初相位因子随光程差改变缓慢变化或快速变化，对相位误差的影响也不全相同。

This method decomposes wave-front phase to a linear combination of orthonormal basis functions, According to the covariance of weight coefficient, a random wave-front phase is realized.

协方差冲激函数产生法对连续波前相位进行冲激函数正交分解，根据正交分解系数的协方差模拟平行光通过大气后的瞬时波前相位。

The pulse overflow DDS,in which the overflow signal of the phase accumulator is used for the pulse output,can be easily implemented by using FPGA.

脉冲溢出型DDS利用相位累加器的溢出信号作为输出信号，很容易用FPGA器件实现，但它输出的脉冲信号存在相位抖动的缺点。

The pulse overflow DDS, in which the overflow signal of the phase accumulator is used for the pulse output, can be easily implemented by using FPGA. But its pulse output has the drawback of the phase jitter.

脉冲溢出型DDS利用相位累加器的溢出信号作为输出信号，很容易用FPGA器件实现，但它输出的脉冲信号存在相位抖动的缺点。

OBMorph adopted a paraboloidal mirror to vary the incident angle, the wave-plates to modulate phase retardation, a reference optical path to stabilize the optical source, and a flow-injection system to drive bio-sample into the bio-chip. In order to having high precision in the ellipsometry subsystem of OB-Morph, it adopt a 0.4μm accuracy servomotor to control the stage that carried the right angle mirror and to control the variation of the incident angle.

本文中所建构之OBMorph检测系统中，椭偏仪技术是采用相位调制架构设计，开发出利用抛物面反射镜与球面反射镜组合而成之控制入射角改变的光机，加上波板以完成相位调制动作；并以一参考光路做为校准光源之机制，以及设置流道系统提供生物检测之用。

The method of multilevel parallel phase modulation was proposed, which means two parallel multilevel phase shift keying signals were transmitted with one frequency at the same symbol period.

提出了高阶并行相位调制的方法，即在同一调制符号周期，使用同一频率、并行发送2路携带不同信息的高阶相位调制信号。

According to the characteristic that the definition point of the Q matrix of wave front is always located on the extremum point on the axis of the beam, a three-dimensional formula for the rectificative factor of phase in complex ray paraxial approximation is proposed, which calculates the rectificative factor of phase directly without considering the calculation of the main directions and curvatures and the rotation of the coordinates, thus simplifying the paraxial approximation calculation by the complex ray expansion method.

根据波前Q矩阵的定义点总位于波束轴上极值点的特点，提出了三维复射线近轴近似相位校正因子计算公式。该公式不用考虑主方向和主曲率的计算和坐标旋转，直接计算相位校正因子，从而简化了复射线展开法的近轴近似计算。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷