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- phase difference modulation 相位差调制
- The phase difference between the two sources is gradually drifting with time. 两个源的位相差随时间逐渐移动。
- In practice there are three methods of accomplishing this phase difference. 在实践中有三种方法来获得相位差。
- Research on Subdividing Method for Random Phase Difference Fringe Signals[J]. 引用该论文 楚兴春;吕海宝;杜列波;周卫红.
- In the R-FOG based on the phase modulation spectroscopy technique,not only the optical power difference between the clockwise(CW) and counterclockwise(CCW) light waves induces the bias drift,but also the two different modulation indexes do. 基于调相谱检测技术的谐振式光纤陀螺系统中,除顺时针(CW)和逆时针(CCW)光路传播的光强不均匀会引入非互易相位差,使系统出现零漂外,顺时针和逆时针光路的调制系数也会引入系统零漂。
- For the nonproportional loading the dispersion become larger with the phase difference increasing. 在非比例加载条件下,随著相位差的增大,分散性增大。
- How to measure phase difference quickly is a main research topic on scientific research in production. 如何快速准确地测量出相位差也是生产科研中重要的研究课题。
- For sinusoidal waveforms, it is equal to the cosine of the angle of phase difference between voltage and current. 对于正弦波来说,功率因子等于电压、电流位相差的余弦。
- This movie demonstrates the phase difference and the amplitude decay of the E and H field in freespace. 本影片可看出真空中电场和磁场之间的相位差和振幅衰减的现象。
- You may also need to load different modules. 您可能还需要载入一些模块。
- Phase difference between the terminal voltage of an alternator and its electromotive force. 交流电机的端电压和其电动势之间的相角差。
- At the same time, the RPWM spectrums under different modulation index were compared to expose the weakness of RPWM. 对不同幅度调制比下的RPWM波频谱进行比较,RPWM对幅度调制比要求较高。
- In the processing, InSAR technique can be used to estimate the phase difference of the images. 利用该频谱偏移进行频谱合成形成较宽的距离向频谱及方位向频谱,从而提高系统的距离向分辨力及方位向分辨力。
- On the basis of analysis and comparison of different modulation schemes, a multiresolution multitone modulation for software radio is given. 本文根据软件无线电的特点,在分析比较了各种调制方案的基础上,提出了一种具有多分辨率的多音调制方案。
- A phase difference of 90°may therefore be obtained by means of two successive total reflections at either of these angles. 所以,如果在其中某一角度接连全反射两次,则可获得90°的相位差。
- The presence of stray light is indicated by the absence of complete extinction when the phase difference is such that this should be achieved. 若位差达到应当消光的程度,却未能完全消光即表示有杂散光存在。
- The comparison of different modulation formats, such as OOK, RZ-DPSK and NRZ-DPSK, with different amplification functions, e.g.SOA and EDFA, are also illustrated. 也进一步探讨不同的调变信号(如OOK,RZ-DPSK,NRZ-DPSK)与不同放大机制(如掺铒光纤放大器与半导体光学放大器)在传输系统里的影响。
- A novel method of phase difference estimation under Gaussian noise is proposed to improve the precision of Coriolis mass flowmeter. 为提高其精度,提出了一种高斯噪声背景下的科氏质量流量计相位差估计新方法。
- A frequency tracking method is proposed.The synchronism sampling is achieved to improve the measuring precision of frequency and phase difference. 本文提出一种频率跟踪方法,可以在不过零开始采样的情况下,实现整周期采样,保证频率和相位差测量的精度。
- Phase difference between the e.m.f. of an alternator taken as a reference and that of another alternator or that of an infinite bus. 作为参考的交流电机电动势与另一台交流电机或无限大母线电动势之间的相角差。