对幅频特性和群时延特性进行精细调整。
The amplitude and group delay characteristics can be controlled exactly.
在时域上引入了不同群时延的窄带校正函数。
Narrow band corrective functions with various group delay are introduced into the time domain.
同时给出了群时延为负的充分条件和必要条件。
In addition, the sufficient and necessary conditions for the group delay to be negative are given.
用传输矩阵法分析反射谱、时延曲线和群时延抖动。
Reflection spectrum, group time delay and group time delay ripple are analyzed by the method of transformation matrix.
本文介绍了一种数字微波通信系统的群时延测量方法。
A method of Group Delay measurement in Digital Radio System has been introduced in this article.
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 purpose of optimizing phase response characteristic is to obtain flat group delay characteristic at Pass band.
改变光子晶体光纤的结构参数，将获得更高的双折射和更大的群时延差。
We can obtain much higher birefringence and larger difference of group time delay by choosing different structure parameter of fibers.
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。
A new method for calculating SC network sensitivity, group delay and group delay sensitivity is presented in this paper.
群时延是系统和网络的一项重要传输特性，它表征系统和网络的线性失真。
The group delay, which characterizes the linear distortion of the system and network, is an important transmission characteristic.
信道的群时延指标对跟踪系统的测量精度和通信系统的信号质量都十分重要。
The group delay specification of a channel is very important for rangingaccuracy of a tracking system and signal quality of a communication channel.
首先从理论上分析了射频BPF的群时延特性对OFDM系统产生影响的原因。
First of all, the reasons of the effects of BPF group delay on the OFDM system is deduced in theory.
通过理论推导得出非理想的BPF的群时延特性，对系统输出信号会造成干扰。
The deduced result shows that the non-ideal group delay characteristic of BPF will cause interference on the output signal of the OFDM system.
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。
Therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband.
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。
Group delay and dispersion characters are analyzed according to the above filter. In addition, the dynamic tunable feature is discussed.
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 result of the research supplies a reference to the design of group delay of BPF in the RF system.
以往的文献中，多用群时延来分析TT&C的测距误差，这种方法不够准确和全面。
Many published papers analysed range error by using group delay, it is not accurate enough.
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。
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.
斜向探测是电离层探测的主要方式之一，它能够获得电波传播群时延和频率关系的电离图。
The oblique sounding is one of the powerful tools, by which an oblique ionogram is obtained with the group path or time delay against operating frequency.
本论文主要研究OFDM系统中的射频BPF的群时延特性对OFDM接收机误码率的影响。
This paper is to research the effects of the RF BPF group delay characteristics on the bit error rate (BER) of the OFDM receiver.
为了与量子纠缠类比，进一步研究了这种纠缠态对贝尔不等式的破坏以及波导群时延的相关性质。
The simulation is discussed in detail, including the violation of the Bell inequality and the correlation properties of optical pulses' group delays.
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。
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.
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 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.
在已知固定地面距离的发射站和接收站之间的扫频斜向探测技术能够获得电波传播群时延对频率关系的斜测电离图。
An oblique Ionogram is a plot showing the group path or time delay against operating frequency when using swept frequency obliquely sounding between the transmitting and receiving site.
这种滤波器采用灵活的拓扑结构和耦合结构，可以实现传输零点，从而提高滤波器带外抑制特性，或者使群时延更加平坦。
Flexible topology and coupling structures are used to realize transmission zeros, thereby enhancing the stop band rejection or making more flat group delay.
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。
A new magnetic field measurement based on the Faraday effect and the measurement of differential group delay (DGD) in fiber grating was proposed.
该群时延均衡器能与不同类型超导微带滤波器级联，实现相位均衡，减小相位失真，改善接收机前端信号群时延特性，提高通信质量。
This group-delay equalizer can follow any type of HTS microstrip filter in order to reduce phase distortion, enhance group-delay performance, and improve communication quality.
在软件方面，详细介绍和分析了矢量信号解调分析软件设计与实现，其中包括载频频偏计算、幅度和群时延补偿、脉冲成形滤波器设计等。
It describes clearly the software of vector signal demodulation, including the frequency offset calculation, magnitude and group-delay compensate, and pulse shaping filter.
在软件方面，详细介绍和分析了矢量信号解调分析软件设计与实现，其中包括载频频偏计算、幅度和群时延补偿、脉冲成形滤波器设计等。
It describes clearly the software of vector signal demodulation, including the frequency offset calculation, magnitude and group-delay compensate, and pulse shaping filter.
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