本文基于平均斜率与波束指向的关系,提出了一种基于相位面台阶平移的波束扫描方法。
In this letter, a beam steering approach based on horizontally moving phase steps is proposed.
分析了三种光学失配情形(等相位面失配、准直失配和偏移失配)下外差效率的不同表达形式,计算了三种失配情形影响下的外差效率变化曲线。
The expressions of the heterodyne efficiency in the conditions of three kinds of optical mismatch including equiphase surface mismatch, collimation mismatch and deviation mismatch are analyzed.
本文介绍一种在喇叭口径上具有幅度锥削的相位校正的E面扇形喇叭。
In this paper, an e-plane sectoral horn with amplitude taper and phase correction in the aperture is presented.
使用相匹配滤波技术提取基阶面波振型的相位,然后再利用时变滤波进行振幅谱校正,以此分离出基阶振型面波信号。
Phase-matched filter is applied to extract phase of fundamental surface wave, and then time-variable filter is used to correct amplitude spectrum in order to isolate fundamental mode signs.
且原理简单,测量精度高,不需要复杂的相位展开和校准过程,特别适用于测量突变面形和空间离散面形。
It is a simple principle and higher measurement precision without complicated phase unwrapping and calibration procession, and can be used to measure the discontinuous and spatial isolation shape.
粗糙面反射光的波前失真由相位共轭修复。
The distorted wave front of the light diffusely reflected from the rough surface is reconstructed by phase conjugation.
同抛物面反射器相比,菲涅尔区相位修正平面反射器的相位效率因子对天线效率的影响显著。
Compared with the parabolic reflector, a phase factor is of most importance in the efficiency evaluation of Fresnel zone phase-corrected plate (FZP) ones.
一方面,土星,代表努力工作的行星,将会和太阳处于对立相位,因此你可能会感觉你不得不完成的工作很艰巨。
On one hand, Saturn, the planet of hard work, will oppose the Sun, so you may feel that the tasks you have to do seem burdensome.
提出一种新的光学轮廓术线性编码轮廓术,它利用周期线性结构光编码三维物面,并辅以相移技术来解调相位。
A new optical profilometry linearly coded profilometry is presented. It USES a periodic linear structure illuminating light to code the surface and the phase shifting technique to decode the phase.
另一方面,相位不良的水星也会带来反面效果,让本来并不存在的情感问题由于最简单的沟通误会而一发不可收拾。
On the other hand, phase bad mercury also can bring negative effect, make itself doesn't exist because the most simple emotional problems of communication misunderstandings and a shield.
由于不需另外采集实物参考面变形光栅图像,不仅减少了实物参考面的采集步骤,而且不需要对实物参考面相位进行求解。
It's unnecessary to collect deformed grating images of object reference plane, which reduces operation steps and takes no solution for the phase of object reference plane.
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.
由于不需另外采集实物参考面变形光栅图像,不仅减少了实物参考面的采集步骤,而且不需要对实物参考面相位进行求解。
For unnecessary to collect deformed grating images of object reference plane, it reduces operation steps and takes no solution for the phase of object reference plane.
用相位多普勒颗粒测速仪(PDPA)测量了颗粒的平均与脉动速度,研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
这个相位会迫使你去暂时体会自己觉得自己消极的一面。
This influence may force you to briefly experience what you consider to be your negative side.
另一方面,同样还是这3月20-21日这个周末,火星将和太阳成和谐的相位,之后将进入你的第五宫。
On the other hand, this same weekend of March 20-21 will bring Mars in perfect harmony to the Sun, by then in your house of fun and love.
另一方面是主导轴的转速和相位伺服部分的组成、作用和工作原理。
One is the composing, function and principle of rotate speed and phase servo system of magnetic drum;
在采用结构照明的光学三维传感方法中 ,相位展开是被测物体三维面形正确重建的关键步骤之一 ,也是一个难点。
Phase-unwrapping is one of the most important and difficult steps to retrieve object correctly in optical measurement based on structure light projecting.
如果一个凶相位,接下来是一个吉相位,那么损失最后可能会转向有利的一面。
If followed by a good aspect, the disadvantage may finally turn into an advantage.
分析了物面偏转角度和附加高度差之间的关系,得出了物面相位和物面高度之间的映射关系。
The relationship between the tilting Angle and the additional height difference is analyzed. Then the relationship between the phase of the test object and the height of object's surface is obtained.
分析了物面偏转角度和附加高度差之间的关系,得出了物面相位和物面高度之间的映射关系。
The relationship between the tilting Angle and the additional height difference is analyzed. Then the relationship between the phase of the test object and the height of object's surface is obtained.
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