微波移相器是能改变电磁波相位的器件,广泛应用在相控阵雷达和微波通信系统中。
Microwave phase shifter is a device that can change the phase of electromagnetic wave. It is widely used in the phase array radar and microwave communications systems.
当两种波相位相同时,就会增强总反射,否则反射将会减弱,并且透射波也会有相同的规律。
When both waves are the same in phase, strong reflections take place, otherwise, reflection become weak, and the same as for transmission.
本文为实时估计两列波相位差提供了新方法,在流体物理检测、深海采矿船升沉运动位移等的检测中具有良好的作用。
It provides a new method to estimate phase difference for test of characteristic parameters of fluid and measurement of a ship heave in deep-sea mining.
针对姿态对星载SAR成像质量的重要影响,提出一种借助于SAR卫星姿态运动学特性和GPS宽波载波相位信息进行SAR卫星姿态测量的算法。
An algorithm is presented to determine the SAR satellite attitude with the aid of the SAR satellite kinematics model and the information of GPS wide-band carried phase.
电磁波的震荡甚至不像在真空中那样前进了。这就是我们称之为零相位表现。
The oscillatory phase of the electromagnetic wave doesn't even advance such as in a vacuum — this is what we term a zero-phase delay.
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.
和同相位,在任何时刻,任何地点电磁波的和都是同步变化的。
The changes of and of the electromagnetic is synchronous at any time and at any locality.
在某相位编码毫米波雷达系统中,要求很高的目标速度测量精度,因而目标多普勒频率测量电路的设计比较重要。
The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
复值小波变换能准确分辨出信号中所包含的幅值信息和相位信息,因而,适用于电力系统的故障信号的检测。
Because complex wavelet transforms can exactly identify amplitude and phase information in signal to be dealt with, they are suitable for detection of fault signals in power system.
本文利用严格耦合波理论对用于光纤光栅制作的相位掩模的衍射特性进行了深入的研究。
The diffraction characteristics of the phase mask for UV-written fiber grating is investigated using rigorous coupled-wave theory.
利用耦合波方程分析了相位共轭效应和受激散射阈值效应对受激散射光发散角的影响。
The influence of the phase conjugation effect and the threshold effect of stimulated scattering on the divergence of stimulated scattering was discussed.
在某相位编码毫米波雷达系统中,由于对目标速度测量精度的要求很高,因此目标多普勒频率测量电路的设计也具有比较重要的地位。
The design of target Doppler frequency measurement circuit is very important in phase-coded MMW radar system because of the high measurement precision requirement of target speed.
在此情况下可以对输入数据符号进行加权处理,从而得到一类MS K信号,这类MS K信号仍为等幅波、相位仍保持连续。
In these situations, one might apply additional input pulse weighting to form a class of MSK type signals which still maintain constant envelope and continuous phase.
尾波场效应导致脉冲自相位调制的不对称性,其大小与初始脉冲形状和脉宽大小有关。
The effect of wakefield, which depends on the initial pulse shape and width, leads to the asymmetry of pulse self phase modulation.
在温度变化范围内,四波混频相位共轭反射率从4 %增加到14%。
The four-wave mixing phase conjugation reflectivity increases from 4% to 14% in this temperature range.
提出了解相关同步CD MA系统一种联合波达方向(DOA)估计与相位标定算法。
A joint direction of arrival (DOA) estimation and phase calibration for synchronous CDMA system with decorrelator are presented.
本文研究了向列相液晶中热致相位光栅产生的简并四波混频过程。
The degenerate four-wave mixing process due to thermal phase grating in nematic liquid crystals is studied.
用有限元方法分析了其反射相位特性及表面波传输特性。
The reflection phase property and surface wave dispersion are analyzed using finite element method.
介绍基于最低阶反对称板波激励、扫频幅度相位显示的复合材料粘结质量评价的新方法。
Descriptions are made of a new instrument based on the lowest order asymmetric plate wave excitation and swept frequency amplitude phase display.
由于向列相液晶大的非线性系数,使得利用向列相液晶产生光学相位共轭波称为可能。
Nematic liquid crystal has a large non-linear coefficient, so it is possible to produce optical phase conjugation (OPC) wave in right condition.
对所有的回热式低温制冷机,压力波与质量流之间的相位控制是达到制冷效果的关键。
To all the regenerative refrigerators, to control the phase angle between the pressure and the volumetric velocity is pivotal to attaining satisfactory refrigeration effect.
在正弦波合成中采用相位匹配合成算法,保证了帧间参数的连续性。
To keep the continuity between different frames, phase matching algorithm is also utilized.
为了解决非均匀介质中的光传输问题,利用光学相位共轭波的时间反演特性,实现了对克斯林衍射积分公式的改进。
In order to study laser propagation in inhomogeneous medium, Collins formula was improved by using time inversion characteristic of optic phase conjugation wave.
利用偏差分析的结果,可以得出一个对正态过程和随机相位正弦波都是无偏的不用乘法器的相关器。
Taking advantage of the analysis of the bias, an unbiased correlator without multiplier is deduced for Gaussian process and sinusoidal wave with random phase.
给出了偏振光分束器任一个偏振方向上的光强随单个波片相位延迟变化的关系,并从实验上验证了这一关系。
It also shows the relationship of light intensity in any direction of polarization splitter and phase delay of a single plate within PC, and proves the result by experiments.
最大熵与互功率谱相位法就是首先求出组分波的波至点。
The arrival of components must been picked for the method of maximum entropy and cross power spectrum phase.
这组方程是研究固定相位和随机相位重力波相互作用问题的出发点。
The equations can be used to study both interactions of fixed-phase and random-phase gravity wave packets.
相位信息是电力系统的一个重要特征,正交或双正交的复小波是实时提取电力系统中相位信息的有力手段。
Phase information is one of emphasis characters in the power system orthogonal or biorthogonal complex wavelet is strong means to extract phase information in the power system in time.
相位信息是电力系统的一个重要特征,正交或双正交的复小波是实时提取电力系统中相位信息的有力手段。
Phase information is one of emphasis characters in the power system orthogonal or biorthogonal complex wavelet is strong means to extract phase information in the power system in time.
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