片语

group-delay dispersionThe group delay dispersion (GDD) of an optical element is the derivative of the group delay with respect to angular frequency, and also the second derivative of the optical phase. D_2(\omega) = \frac{\partial T_g}{d \omega} = \frac{d^2 \phi}{d\omega^2}.

group casting delay time群时延

group p delay meter波群延迟计

group velocity delay ripple群时延抖动

group casting delay equalization群时延均衡

group casting delay distortion群时延失真

group velocity delay群速延迟

英汉例句

• therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband.

  因此，它在带外衰减与带内幅度特性和带内群时延特性之间有了一个较好的折中。

• a novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and is not restricted by the practicable materials.

  基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。

• narrow band corrective functions with various group delay are introduced into the time domain.

  在时域上引入了不同群时延的窄带校正函数。

• the difficulty of solving pmd lies in its randomness of differential group delay (dgd) between the principal states of polarization (psp) and the change.

  pmd问题的最大困难在于差分群延迟（dgd）和偏振主态（psp）变化的随机性。

• the amplitude and group delay characteristics can be controlled exactly.

  对幅频特性和群时延特性进行精细调整。

• the systems transfer function is analyzed, especially the one of the filter which is connected between vfd and the phase detector, and it should be established on the group delay concept.

  根据功能，认为变频器输出电压滤波器的传递函数需要使用群时延概念，为更精确地分析这类问题提供了依据。

• the result of the research supplies a reference to the design of group delay of bpf in the rf system.

  本文的研究结论为射频系统中设计发射机bpf的群时延特性设计提供了参考依据。

• the group delay as a function of wavelength is obtained rapidly after processing the interferogram by fourier-transform, yielding result within a few minutes.

  通过对采集的干涉图数据进行离散傅里叶变换处理，提取相位，最终得到作为波长函数的群时延。

• the expressions for the bandwidth and group delay of msfvw are derived under magnetostatic approximation.

  在静磁近似下推导出了静磁正向体波带宽及群延迟的表达式。

• a novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and.

  基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。

• a new method for calculating sc network sensitivity, group delay and group delay sensitivity is presented in this paper.

  本文提出了一种计算sc网络灵敏度、群时延和群时延灵敏度的新方法。

• the amplitude frequency response and group delay response of saw tvif filters have been measured.

  并测试了其幅频特性和群延迟特性。

• a new magnetic field measurement based on the faraday effect and the measurement of differential group delay (dgd) in fiber grating was proposed.

  提出了一种利用光纤光栅中法拉第效应和测量差分群时延（dgd）的直接测量磁感应强度的新方法，给出了理论分析和实验结果。

• the characters of phase shift and group delay are controlled by the number and position of zeroes and poles.

  而滤波器的零点、极点个数及其位置又完全决定了其相移和群延迟的性质。

• according to the principle of circular convolution, a method of realizing non-causal equalizer is proposed to suppress the influence of the group delay effect.

  其中针对群延迟的影响，根据循环卷积的原理，提出了一种实现非因果均衡器的方法。

• in addition, the sufficient and necessary conditions for the group delay to be negative are given.

  同时给出了群时延为负的充分条件和必要条件。

• the superprism effect was demonstrated experimentally in a thin film fabry-pérot filter based on its large group delay at the wavelength of peak transmittance.

  基于薄膜法布里珀罗滤光片在其峰值波长处具有较大群延迟的特性，设计并从实验上验证了光束倾斜入射时这种结构中存在的超棱镜效应。

• the use of a microprocessor results in a low-cost, yet accurate and reliable group delay meter.

  使用微处理机的结果不仅可靠而价廉，且是一种精密的群时延量计。

• electrical power, changing with differential group delay (dgd) and detected from an optical communication link, can be used as feedback signals of compensating for pmd.

  光纤通信线路检测到的电功率随差分群延迟变化，可以作为pmd补偿的反馈控制信号。

• the conclusion shows that the pulse width decreases nearly linearly while the absolute value of group delay dispersion decreases, and it is consistent with the result of experiments qualitatively.

  计算结果表明，随着群时延色散绝对值的降低，输出脉宽近线性减小，此数值结论与已有实验结果定性一致。

• simulation results show that the group delay can be effectively and adaptively compensated by the proposed algorithm, where the closed eye-diagram is opened successfully.

  仿真结果表明，该算法可以对群时延进行有效的自适应补偿，将关闭的眼图成功的打开。

• the purpose of optimizing phase response characteristic is to obtain flat group delay characteristic at pass band.

  而对相频特性优化的目的是要在通带内获得平坦的群时延特性。

• the sample rate, filter corner frequency, settling time, group delay and output word rate will be reduced also, as these are proportional to the external clock frequency.

  由于采样速率、滤波器转折频率、建立时间、群延迟和输出字速率与外部时钟频率呈比例变化关系，因此这些参数也会相应降低。

• group delay and dispersion characters are analyzed according to the above filter. in addition, the dynamic tunable feature is discussed.

  详细分析了滤波器的群时延特性和色散特性，讨论了该滤波器的动态可调谐性质。

• it is important to know how does the degree of polarization (dop) change with differential group delay (dgd) when dop is feedback information for adaptive pmd compensation.

  在用偏振度作为反馈信号的动态偏振模色散补偿系统中，偏振度与差分群延时的关系对于準确快速的动态偏振模色散补偿很重要。